Deuterium lamps

DEUTERIUM LAMPS
L2D2 LAMPS
L2D2 Lamps (Deuterium Lamps)
Long Life Deuterium Lamps
The L2D2 lamps are deuterium lamps specifically
developed for analytical instruments.
These L2D2 lamps offer excellent features essential for
light sources in analytical instruments such as long
service life, high stability and high output.
APPLICATIONS
●HPLC (High Performance Liquid Chromatography)
●UV-VIS Spectrophotometer
●CE (Capillary Electrophoresis)
●Atomic Absorption Spectrophotometer
●Thin Layer Chromatography
●Film Thickness Gauge
●Photoionization Light Source
●Semiconductor Testing Equipment
●Water Quality, Air Pollution and Other Environmental Analyzer
●UV Resistance Evaluation of Materials
●Static Electricity Removal by Vacuum UV Light
LONG LIFE : 4000
HOURS
■ Life Characteristics
The L2-4000 series lamps assure
an operating life of 4000 hours.
This is the longest operating life of
any deuterium lamp.
LIGHT OUTPUT (%)
100
50
L2D2 LA
MP
L2-2000
SERIES
L2D2 LA
M
L2-4000 P
SERIES
0
0
1000
2000
TIME (h
)
1
TLSOF0138
3000
4000
TLSOB0050EB
HIGH STABILITY :
■ Light Output Stability
Fluctuation 0.005 % (p-p) Typ. (Equivalent to 2 × 10-5 A.U.)
Drift ±0.3 %/h
By using a ceramic structure, a uniform and
optimum temperature distribution, which are
the most important factor for stable operation,
can be obtained.
TLSOB0095EA
20
ABS (10-5 A.U.)
15
10
5
0
-5
TLSOB0096EA
-10
20
-15
0
100
200
300
400
500
600
TIME (s)
0h
2000 h
15
700
10
ABS (10-5 A.U.)
-20
800
5
0
-5
-10
-15
-20
0
100
200
300
400
500
600
700
800
TIME (s)
EXCELLENT
TEMPERATURE
CHARACTERISTICS
Use of a ceramic structure with excellent thermal
stability ensures stable lamp operation even in
the presence of ambient temperature variations.
SMALL INTENSITY VARIATIONS
■ Intensity Variation
4
Ceramic electrodes ensure a fixed
distance between each electrode.
This precise spacing minimizes
variation in output light intensity
from one lamp to another.
TLSOB0053ED
RELATIVE IRRADIANCE
3.5
3
Construction
2.5
CERAMIC ELECTRODE
(REAR PIECE)
2
ANODE
APERTURE
1.5
CERAMIC ELECTRODE
(CENTER PIECE)
1
CATHODE
CONSTANT
0.5
0
190
BULB
210
230
250
270
290
310
330
350
WAVELENGTH (nm)
LESS MOVEMENT
OF ARC
EMISSION POINT
370
390
LIGHT OUTPUT
TLSOC0030EB
Since the ceramic structure has a small thermal
expansion coefficient, there is virtually no movement
of the arc emission point during operation.
2
L2D2 Lamps (Deuterium Lamps)
SPECIFICATIONS
SELECTION GUIDE
Power
Consumption
Type
Cathode Rating
Series
2.5 V/1.0 V
3.0 V/0 V to 1 V
2.5 V/1.0 V
2.5 V/1.7 V
3.0 V/0 V to 1 V
10 V/2.5 V to 6.0 V
10 V/7.0 V
12 V to 15 V/0 V
L2-4000
Standard
L2-2000
30W
See-through
L2-2000
2.5 V/1.0 V
SPECIFICATIONS
STANDARD TYPE
A
Series
L2-4000
L2-2000
DimenType No. sional
Outline
L6565
L6566
L6301
L6301-50
L6303
L6305
L6307
L6309
L7296
L7296-50
L6311
L6311-50
L7292
L7293
L7293-50
q
w
q
o
q
w
e
e
t
u
r
i
y
y
!0
B
Window
Material
Output Stability
at 230 nm
Spectral Aperture Drift
Distribution Diameter
Max.
(nm)
(mm) (%/ h)
UV glass
185 to 400
UV glass
185 to 400
C
Required
D
FluctuDischarge
ation Guaranteed
Starting Voltage
(p-p)
Life
Anode
Current
Tube
Voltage
Typ.
(%)
at 230 nm
(h)
Max.
(V dc)
(mA dc)
Typ.
(V dc)
300±30
80
300±30
80
Anode
Current
Tube
Voltage
(mA dc)
Typ.
(V dc)
300±30
80
1.0
±0.3
0.005
4000
350
0.5
±0.3
0.005
2000
400
Synthetic silica 160 to 400
UV glass
185 to 400
MgF2
115 to 400
1.0
—
—
E
2000
350
SEE-THROUGH TYPE
A
Series
L2-2000
DimenType No. sional
Outline
L6999
L6999-50
L9030
L9030-50
q
o
t
u
B
Window
Material
UV glass
Output Stability
at 230 nm
FluctuSpectral Aperture Drift
ation
Distribution Diameter
(p-p)
Max.
Typ.
(nm)
(%)
(mm) (%/ h)
D
Required
Guaranteed Discharge
Starting Voltage
Life
Max.
at 230 nm
(h)
(V dc)
C
185 to 400
0.5
±0.3
0.005
2000
400
Synthetic silica 160 to 400
NOTE: ASee pages 5 and 6.
BLamps with a 0.5 mm aperture provide 1.4 times higher radiant intensity than lamps with a 1.0 mm aperture. (See page 8.)
CLamp life end is defined as the point when light output at 230 nm falls to 50 % of its initial value or when output fluctuation exceeds 0.05 % (p-p).
DA pulse voltage higher than this value must be supplied to start reliable lamp discharge. (See Figure 5 on page 9.)
EOperating life may differ depending on environmental operating conditions (vacuum atmosphere). It is recommended that these lamps be used in an oil-free environment.
3
An Example for optics of See-through type
SEE-THROUGH TYPE
The see-through type electrode structure enables
straight-line arrangement of the halogen lamp, deuterium
lamp, optical system and optical passage. This simplifies
optical design of UV-VIS spectrophotometer etc., and
eliminates loss of light amount caused by the half mirror.
TOP VIEW
40˚
LENS
SEE-THROUGH
L2D2 LAMP
F
Operating
(V dc, ac)
2.5±0.25
3.0±0.3
Current
Typ.
(A dc, ac)
4
5
2.5±0.25
4
3.0±0.3
5
0.8
10±1
TLSOC0011EF
Applicable Power Supply I
Filament Ratings
Warm-up
Voltage
Time
Min.
(s)
20
AC Input Type
DC Input Type
Lamp House
(V dc)
1.0±0.1
0 to 1
Current
Typ.
(A dc)
1.8
0 to 1.8
C9598-2510
C9598-3000
M9596-2510
M9596-3000
—
1.0±0.1
1.8
C9598-2510
M9596-2510
—
E9522
3.3
0 to 1.8
0.3 to 0.6
C9598-2517
C9598-3000
C9598-1035
M9596-2517
M9596-3000
M9596-1035
1
C9598-1070
M9596-1070
Voltage
1.7±0.2
0 to 1
2.5 to 6.0 G
1.2
20
7.0±0.5
—
E9558
12 to 15
0.5 to 0.55
10±1
0.8
2.5±0.25
4
0
H
2.5 to 6.0 G
H
C9598-1555
M9596-1555
0.3 to 0.6
C9598-1035
M9596-1035
1.8
C9598-2510
M9596-2510
0
1.0±0.1
(V dc, ac)
2.5±0.25
F
Current
Typ.
(A dc, ac)
4
—
Type No.
L6565
L6566
L6301
L6301-50
L6303
L6305
L6307
L6309
L7296
L7296-50
L6311
L6311-50
L7292
L7293
L7293-50
Applicable Power Supply I
Filament Ratings
Warm-up
Voltage
HALOGEN
LAMP
Operating
Time
Min.
(s)
20
Voltage
(V dc)
1.0±0.1
Current
Typ.
(A dc)
1.8
AC Input Type
C9598-2510
DC Input Type
M9596-2510
Lamp House
Type No.
—
L6999
L6999-50
L9030
L9030-50
NOTE: FThe heater current during pre-heating is extremely high, so if the cable between the lamp and power supply is too long, the voltage supplied to the lamp will be too low due
to a voltage drop in the cable.
The power supply for the heater should be designed to supply the specified voltage at the lamp input terminal.
GRecommended operating voltage is 3.5 V ± 0.5 V.
HDuring lamp operation a discharge current flows into the filament so no external power supply is needed to maintain the filament temperature.
IWe recommend using Hamamatsu dedicated power supplies in order to obtain full performance from our deuterium lamps. (See pages 7 and 9.)
4
L2D2 Lamps (Deuterium Lamps)
DIMENSIONAL OUTLINES
42±2
80±2
30±1
42±2
42±2
7 MAX.
30±1
68±2
28±1
e L6307, L6309
68±2
7 MAX.
w L6305, L6566
7 MAX.
See-through Type
q L6301, L6565, L6303, L6999
(Unit : mm)
ARC POINT
ARC POINT
160±10
160±10
160±10
ARC POINT
CONNECTION
6
L6301, L6565, L6999
20
TLSOA0018EF
TLSOA0041EE
: BLUE
: BLUE
: RED
See-through Type
7 MAX.
30±1
7 MAX.
14±1
6
L9030
FILAMENT
FILAMENT
ANODE
20
7
20
L7292
FILAMENT
: BLUE
FILAMENT.GND : BLACK
ANODE
: RED
7
20
7
FILAMENT
: BLUE
FILAMENT.GND : BLACK
ANODE
: RED
TLSOA0039EF
68±2
CONNECTION
L7296
6
160±10
160±10
160±10
CONNECTION
CONNECTION
FILAMENT
: BLUE
FILAMENT . GND : BLACK
ANODE
: RED
42±2
68±2
ARC
POINT
ARC POINT
ARC POINT
30±1
50±1
42±2
42±2
60±2
30±1
7 MAX.
y L7292, L7293
t L7296, L9030
15.0±0.5
r L6311
5
20
6
6
TLSOA0040ED
15.0±0.5
FILAMENT
FILAMENT
ANODE
CONNECTION
FILAMENT
: BLUE
FILAMENT.GND : BLACK
ANODE
: RED
7
7
20
CONNECTION
FILAMENT : BLUE
FILAMENT : BLUE
ANODE
: RED
7
L6303
FILAMENT
: BLUE
FILAMENT · GND : BLACK
ANODE
: RED
6
L7293
: BLUE
: BLUE
: RED
TLSOA0017EG
FILAMENT
FILAMENT
ANODE
: BLUE
: BLUE
: RED
TLSOA0011EE
See-through Type
u L7296-50, L9030-50
See-through Type
o L6301-50, L6999-50
i L6311-50
- 0.05
- 0.05
3+0.020
23±0.1 23±0.1
160±5
68±2
2- 3.3
B
+0.038
37.0±0.1
52.0±0.5
160±10
ARC
POINT
+0
22.0 - 0.1
+0.15
3 +0.05
50±1
22.0±0.1 22.0±0.1
37
60±2
22
15
15±0.5
5
15
B
B
A
42
ARC
POINT
14±1
68±2
+0
22.0 - 0.1
2- 3.3
+0.038
3+0.020
ARC POINT
2- 3.3
LIGHT OUTPUT
ARC
POINT
160±10
30±1
15
5
ARC
POINT
5.0±0.5
ARC
POINT
7 MAX.
28±1
22.0±0.1 22.0±0.1
7 MAX.
30±1
23.0±0.05
7 MAX.
50±1
A
35.0 - 0.1
A
35.0 - 0.1
LIGHT OUTPUT
+0.15
3 +0.05
LIGHT OUTPUT
7
20
Tolerance of emitting point (center)
With respect to axial line A: ±0.1
With respect to plane B: ±0.1
7
L9030-50
FILAMENT
: BLUE
FILAMENT
: BLUE
ANODE
: RED
20
6
FILAMENT : BLUE
FILAMENT : BLUE
ANODE : RED
6
Tolerance of emitting point (center)
With respect to axial line A: ±0.1
With respect to plane B: ±0.1
TLSOA0075EE
ANODE
CERAMIC
ELECTRODE
(REAR PIECE)
50±1
7 MAX.
A
- 0.05
30±1
22.0±0.1 22.0±0.1
ARC
POINT
Precaution for use L7293-50
CATHODE
APERTURE
0.5
+0
22.0 - 0.1
FLANGE
TLSOA0052EC
B
50±1
68±2
42
LAMP
HOUSING
LIGHT OUTPUT
+0.15
3 +0.05
160±10
GOOD SEPARATED TYPE
VACUUM
SYSTEM
5
15
TLSOA0051ED
CERAMIC
ELECTRODE
(CENTER PIECE)
2- 3.3
BAD UNIFIED TYPE
Mounting example on the vacuum system
(L7292, L7293, L7293-50)
15±0.5
LIGHT OUTPUT
FLANGE
20
7
ARC
POINT
6
SCREW PORTION
Tolerance of emitting point (center)
With respect to axial line A: ±0.1
With respect to plane B: ±0.1
TLSOA0088EC
LAMP
HOUSING
1
2
3
4
5
a
b
CONNECTION
FILAMENT : BLUE
FILAMENT : BLUE
ANODE : RED
Tolerance of emitting point (center)
With respect to axial line A: ±0.1
With respect to plane B: ±0.1
40 °
35.0 - 0.1
ARC
POINT
6
TLSOA0050EC
Cross section of see-through type
!0 L7293-50
20
CONNECTION
CONNECTION
: BLUE
FILAMENT
FILAMENT.GND : BLACK
ANODE
: RED
L7296-50
FILAMENT
: BLUE
FILAMENT·GND : BLACK
ANODE
: RED
7
CONNECTION
1VACUUM SIDE FLANGE
2TIGHTENING SCREW
3STOPPER
4O-RING (JIS B2401)
CALL No. V15
15 mm I.D.
4 mm WIDTH
5SPACER
aMgF2 WINDOW
bGRADED SEAL
TLSOC0010EB
When the flange of L7293-50 is used as
purpose of lamp cooling, vacuum system
part should be separated from the lamp
housing part. If vacuum system part is
unified to lamp housing part and the lamp
flange is fixed to the lamp housing, it may
induce broken of lamp snout part.
TLSOC0045EA
6
L2D2 Lamps (Deuterium Lamps)
POWER SUPPLY
Applications using L2D2 lamps require a very stable light output, so using a
Hamamatsu dedicated power supply is recommended to operate these lamps.
Our dedicated power supplies use a constant-current circuit and
constant-voltage circuit that deliver stable and reliable lamp ignition.
Two types of power supplies are available: AC input (100 V to 240 V) type
C9598 and 24 V dc input type M9596. Please select the power supply that
matches your application.
Left: C9598, Right: M9596
SPECIFICATIONS (Characteristics are measured at 25 °C ± 1 °C after 30 min of warming up.)
Parameter
Input
Input Voltage
C9598
M9596
Unit
AC100 V to AC240 V
(100 V/200 V Auto Switching)
Single Phase 50 Hz/60 Hz
DC24 V ± DC2.4 V
—
Input Current (Max.)
0.9
With Load (Typ.)
Output Voltage (DC)
Without Load (Min.)
Output Current (DC)
Output
Current Fluctuation (p-p) (Typ.)
Current Drift at +25 °C (Typ.)
Warm-up Time
Trigger Voltage
Cooling Method
Operation Ambient Temperature
Storage Temperature
Operating and Storage Humidity
Weight
EN (CE Marking)
Conformance Standards
UL (File No. E249677)
2
80
200
300 ± 30
0.005
±0.02
Approx. 20
Approx. 600
0.3 m3/min of Forced Air Cooling
—
0 to +40
-10 to +60
Below 80 (No condensation)
Approx. 1.8
Approx. 0.18
Yes
Yes
No
Yes
A
V
V
mA
%
%/h
s
V peak
—
°C
°C
%
kg
—
—
FILAMENT RATINGS
Type No.
Warm-up
Voltage (V dc)
Current (A dc) (Typ.)
Operation
Voltage (V dc)
Current (A dc) (Typ.)
C9598/M9596-2510
2.5 ± 0.2
4
1 ± 0.1
1.8
C9598/M9596-2517
C9598/M9596-3000
C9598/M9596-1035
C9598/M9596-1070
C9598/M9596-1555
2.5 ± 0.2
3 ± 0.2
10 ± 0.5
10 ± 0.5
13.5 ± 0.7
4
5
0.8
1.2
0.5
1.7 ± 0.2
0
3.5 ± 0.2
7 ± 0.4
5.25 ± 0.25
3.3
0
0.3
1
0.3
Applicable Lamps
L6565, L7293, L6999, L6999-50, L7293-50
L6301, L6301-50, L9030, L9030-50
L6303
L6566, L6305
L6307, L7292
L7296, L6309, L7296-50
L6311, L6311-50
LAMP HOUSING
These lamp housings are designed for Hamamatsu L2D2 lamps with a mounting
flange. Despite being low cost and compact, these lamp housings also function
as efficient heat radiator housings to allow stable L2D2 lamp operation.
The window and mounting surface of these lamp housings are finish-machined
and have tapped holes, making it easier to install them in equipment.
These lamp housings are ideal for designing photometric equipment that uses
L2D2 lamps.
E9522: For L6301-50
E9558: For L7296-50
* Custom lamp housings for see-through type lamps (L6999-50, L9030-50) are also available.
7
Left: E9522, Right: E9558
TECHNICAL INFORMATION
■Spectral Distribution
■External View
Deuterium lamps emit high intensity light in the UV range at wavelengths
shorter than 400 nm. Light intensity on the short wavelength side is
determined by the window material used.
1Non-projecting type
(UV glass)
2Projecting type
(Synthetic silica)
3Long-nose projecting type
(MgF2)
Figure 1: Spectral Distribution
IRRADIANCE (µW·cm-2·nm-1 at 50 cm)
1.0
TLSOB0024EF
SYNTHETIC SILICA
(PROJECTING TYPE, 1 mm THICK)
0.1
TLSOF0139
1Non-projecting type uses the side of the cylindrical glass bulb as the
light-emission window. This type allows effective use of emitted light
since it requires less space and has wider directivity since there is no
projection.
2Projecting type uses a flat glass attached to the tip of the projection on
the bulb.
3Long-nose projecting type uses an MgF2 window and is ideal for
vacuum ultraviolet applications. This type is used with the tip of the
long-nose window inserted into vacuum equipment.
UV GLASS
0.01
0.001
160
200
240
280
320
360
400
WAVELENGTH (nm)
■Directivity (Light Distribution)
■Window Material
The following three types of window material are available for deuterium
lamps.
1 UV glass
2 Synthetic silica
3 MgF2
Figure 2 shows the transmittance of various window materials.
UV light at wavelengths shorter than 190 nm attenuates greatly due to its
absorption by oxygen. To obtain the fullest performance in window
transmittance, it is recommended that the inside of the equipment be
filled with nitrogen or vacuum-evacuated to eliminate this absorption
effect.
Figure 2: Typical Transmittance of Various Window Materials
TLSOB0038EC
100
TRANSMITTANCE (%)
80
1Non-projecting type
(UV glass)
30°
3Long-nose projecting type
(MgF2)
30°
20°
30°
20°
20°
10°
10°
0
0
0
-10°
-10°
-10°
-20°
10°
-20°
-30°
-30°
30°
30°
20°
-20°
-30°
30°
20°
20°
10°
10°
0
0
0
-10°
-10°
-10°
-20°
60
2Projecting type
(Synthetic silica)
10°
-20°
-20°
-30°
-30°
MgF2
TLSOB0021EB
-30°
TLSOB0020EB
TLSOB0077EB
SYNTHETIC SILICA
40
■Light Intensity Distribution
UV GLASS
20
100
150
200
250
300
350
WAVELENGTH (nm)
1UV glass
UV glass has a higher ultraviolet transmittance than normal optical glass
(borosilicate glass). It has the longest cut off wavelength of 185 nm
among the three types. However the generation of ozone is lower than
other window material types, it is not necessary to have special
anti-ozone treatments.
2Synthetic silica
Light intensity of deuterium lamps is determined by the aperture (light
exit) size. Figure 3 shows typical light intensity distributions for lamps
with different aperture sizes. At the same input current and voltage,
lamps with a 0.5 mm aperture provide 1.4 times higher intensity than
lamps with a 1.0 mm diameter aperture. The half width of spectral
distribution also becomes narrower with a smaller aperture size.
Using 0.5 mm aperture lamps is recommended in applications where
higher intensity is required or where light must be irradiated onto a very
small area.
Figure 3: Arc Distribution
APERTURE: 0.5 mm
APERTURE: 1.0 mm
Synthetic silica is obtained by fusing a silica crystal that is artificially
grown. Although its cut off wavelength is 160 nm, it contains less
impurities than fused silica, and transmittance at 200 nm has been
improved by approx. 50 %.
3MgF2
MgF2 is a crystallized form of alkali metal halide that has an excellent
ultraviolet transmittance, a low deliquescence and is used as window
material for vacuum ultraviolet applications. Its cut off wavelength is
115 nm.
8
L2D2 Lamps ( Deuterium Lamps)
TECHNICAL INFORMATION
■Construction
3Light output stability
Figure 4 shows an external view and internal structure of a deuterium
lamp. The anode is covered with ceramic to prevent abnormal discharge.
The cathode uses a highly durable electrode that ensures minimum wear
over a long operating life. Since deuterium lamps utilize the positive
column of arc discharge, the cathode is shifted sideways from the optical
axis and an aperture is located in front of the anode to obtain high
intensity. The aperture plate placed between the anode and cathode may
be used as an auxiliary electrode for reliable lamp ignition.
Figure 4: External View and Electrode Construction
External view
Construction
CERAMIC ELECTRODE
(REAR PIECE)
ELECTRODE
ANODE
APERTURE
CERAMIC ELECTRODE
(CENTER PIECE)
CATHODE
BULB
LEAD WIRE
BULB
●Drift
Drift refers to variations in light output over a long period of time that
are caused by changes in thermal electron emission characteristics
of the cathode, changes in gas pressure inside the bulb, and
contaminants on the window. Drift is usually expressed in variation
per hour. In the case of Hamamatsu L2D2 lamps, it takes at least 10
minutes to 15 minutes until the inside of the lamp reaches thermal
equilibrium after discharge starts, so pre-heating for 20 minutes to
30 minutes is required.
●Fluctuation
Fluctuation refers to the peak-to-peak variation in light output over a
short period of time. Hamamatsu L2D2 lamps deliver high stability
with fluctuation down to 0.005 % (p-p).
Fluctuation greatly depends on changes in cathode electron
emission capability that might be due to cathode deterioration and
other factors. Hamamatsu L2D2 lamps maintain initial small
fluctuations even near the end of the guaranteed lamp life.
4Life
●Fluctuation in light output
Life end is defined as the point at which the fluctuation in light output
exceeds 0.05 % (p-p).
●Drop in light output
Life end is defined as the point at which the total emitted energy
drops to 50 % of the initial value.
LIGHT OUTPUT
TLSOC0030EB
■Terminology
■Power supply
1Solarization
A deuterium lamp power supply usually includes the following three
sections.
●Constant current power supply
●Trigger power supply
●Heater power supply
The aperture plate located between the anode and cathode can be used
as an auxiliary electrode to make sure that discharge starts without fail.
Transmittance of light through UV glass and fused silica gradually
decreases as it is used over a long period of time. This is caused by a
drop in transparency of the glass resulting from contaminants adhering
to the inner wall of the glass bulb and the effect of ultraviolet rays. In
worst cases, the glass becomes cloudy and the lamp service life is
shortened. The loss of transmittance due to ultraviolet rays is called
"solarization" and occurs more markedly at shorter wavelengths.
Synthetic silica, however, is highly resistant to this solarization.
Lamps with an MgF2 window emit strong UV light. If they are used in
air, a thin film will be deposited on the window by CVD (chemical
vapor deposition) that might reduce the transparency of the window.
To avoid this problem, the lamps should be used in a vacuum or
nitrogen atmosphere.
Figure 5: Example Circuit Diagram
TRIGGER
SWITCH
DEUTERIUM
LAMP
2Discharge starting voltage
When the cathode is sufficiently heated and ready for arc discharge,
applying a pulse trigger across the anode and cathode will start
discharge. This discharge starting voltage is typically 350 V (400 V at
most) for 30 W lamps. However since the discharge starting voltage
rises with the lamp operation time, applying a voltage of 500 V dc to
600 V dc is recommended for reliable trigger discharge each time.
The discharge starting voltage varies according to the trigger method
and trigger constant.
TRIGGER
POWER
SUPPLY
(DC 500 V to
DC 600 V)
Rt
(1 kΩ to
5 kΩ)
Ct
(0.1 µF to
0.5 µF)
COMPENSATED
RESISTOR
100 Ω to
150 Ω
2.2 nF
300 mA
CONSTANT-CURRENT
POWER SUPPLY
(DC 150 V Min.)
ANODE
APERTURE
CATHODE
HEATER
POWER SUPPLY
(Approx.10 W)
TLSOC0020EF
When using the above circuit to operate a deuterium lamp with a 0.5 mm
aperture, setting the trigger resistance to 1 kΩ and the trigger
capacitance to 0.5 µF as the CR constant is recommended in order to
ensure reliable lamp ignition.
9
OPERATING TEMPERATURE
HANDLING PRECAUTION
To obtain high stability and long operating life, adequate care
must be paid to operating conditions including the lamp operating
temperature. As the ambient temperature (Ta) rises, the lamp
bulb temperature (Tb) also rises. When the ambient temperature
is +25 °C, the bulb temperature rises to about +245 °C to +290 °C.
The bulb temperature (Tb) varies according to the lamp type,
heater voltage and lamp housing. Hamamatsu L2D2 lamps are
designed to operate at an optimal lamp temperature when used
at room temperatures. However, to maintain high stability over a
long period of time, comply with the operating temperature range
shown in Table 1.
1. Deuterium lamps emit ultraviolet rays which can be
harmful to eyes and skin. Do not look directly at the
emitted light or allow direct exposure to skin. Always
wear protective glasses or goggles and clothing when
operating the lamps. (Refer to JIS T 8141 or equivalent
safety standards).
2. Since the bulb wall temperature reaches a high
temperature (over 200 °C) during lamp operation, do not
touch it with bare hands or bring inflammable objects
near it.
3. Do not apply vibrations or mechanical shocks to the lamp.
These might cause light output stability to deteriorate.
4. Graded sealing of synthetic silica and MgF2 window
On bulbs using synthetic silica or MgF2 window, the
window is formed by so-called "graded sealing" which
connects different glasses with slightly different expansion
rates. Since the mechanical strength of the seams of this
graded sealing is low, use caution when securing the lamp
so that no force is exerted on those seams during use.
5. Before turning on the lamp, wipe the bulb and window
gently using alcohol or acetone. Do not handle the lamp
with bare hands. Dirt or smears on the window will cause
a significant drop in ultraviolet transmittance.
6. High voltage is used to operate these lamps.
Use extreme caution to prevent electrical shock.
Table1: Allowable Operating Temperature Range for
Deuterium Lamps
Ambient temperature: Ta
+10 °C to +50 °C
(+20 °C to +30 °C)*
Bulb wall temperature: Tb
+245 °C to +290 °C
Maximum allowable bulb
wall temperature: Tb Max.
+300 °C Max.
*Temperature enclosed by ( ) indicates the optimum ambient
temperature.
Tb
Ta
WARRANTY
2.5 cm
(1inch)
Ta: Temperature measured at a position 2.5 cm (1 inch)
away from the bulb wall
Tb: Temperature on the bulb wall (cathode side)
As the ambient temperature (Ta) rises, the cathode temperature
increases, resulting in evaporation of the cathode. If the ambient
temperature (Ta) drops, the gas pressure inside the lamp bulb
lowers and the gas and ion kinetic energy increases. This causes
spattering of the cathode electron emitting materials. In both
cases, the gas inside the bulb is rapidly consumed so that the
lamp stability and radiant intensity drop, drastically shortening the
operating life.
To ensure stable operation of L2D2 lamps, care must be used
when installing the lamps so that the bulb wall temperature (Tb)
will not exceed +300 °C.
Lamps are warranted for a period of one year from the date
of shipment. If a lamp is found to be defective within this
warranty period, Hamamatsu will replace the defective lamp
without charge. (This warranty is limited to replacement of
the defective lamp.) Even if within the warranty period (one
year), the warranty shall not apply to cases where the lamp
operation time has exceeded the guaranteed life, or the
trouble was caused by incorrect operation or natural or
man-made disasters.
DISPOSAL OF LAMPS
When disposing of the used lamp, take appropriate
measures in compliance with applicable regulations
regarding waste disposal and correctly dispose of it
yourself, or entrust disposal to a licensed industrial waste
disposal company.
In any case, be sure to comply with the regulations in your
country, state, region or province to ensure the used lamp
is disposed of legally and correctly.
10
L2D2 Lamps ( Deuterium Lamps)
RELATED PRODUCTS
X2D2 Lamp
S2D2 Module
The X2D2 lamps emit UV light
with high luminance - twice that
of the L2D2 lamps. The X2D2
lamps help enhance the sensitivity and throughput of various
instruments utilizing UV light.
The S2D2 compact deuterium
lamp is a UV point light source
with a drastically reduced size
compared to ordinary deuterium
lamps. This compact size of the
S2D2 module makes it easy to
install in all types of equipment.
The dedicated lamp housing
and power supply are designed
to extract maximum performance from the S2D2 lamp.
Power Supply
for S2D2 Lamp L10671P
S2D2 Lamp
L10671D
Lamp Housing
for S2D2 Lamp L10671H
Lamp housing is supplied with attached cover.
High Power UV-VIS Fiber Light Source L10290
High Brightness VUV Light Source Unit L10366 Series
Using an X2D2 lamp, the L10290
outputs light of 200 nm to 1100
nm from a light guide (sold separately). Besides a compact size
and light weight for convenient to
carry, the L10290 is specially designed for easy use. These features make the L10290 useful for
various types of portable devices.
Using an X2D2 lamp, the L10366
series produces a spectrum from
115 nm to 400 nm with high intensity especially in the vacuum
UV range. Its air-cooled housing
and vacuum flange mount minimize restriction on the usage location and the installation angle,
allowing greater ease of use.
Light guide is sold separately.
TLSXF0181
Left: Power supply, Right: Light source
Compact UV-VIS S2D2 Fiber Light Source L10671
S2D2 VUV Light Source Unit L10706
The L10671 uses a compact
deuterium lamp (S2D2 lamp).
Despite its compact size, this
light source offers high output
and high stability.
The L10706 uses a compact
deuterium lamp (S2D2 lamp)
with an MgF2 window. This unit
makes it easy to irradiate an object in close proximity and allows the installation and operation under depressurized conditions.
Light guide is sold separately.
TLSXF0192
Left: Light source, Right: Power supply
TLSZF0004
TLSZF0037
Water-Cooled Type 150 W Deuterium Lamps L1314, L1835
Calibrated Deuterium Lamp Light Source L7820, L7820-02 (made-to-order products)
These lamps provide a radiant
output 3 to 4 times higher than
the L2D2 lamps. Two types of
window materials, synthetic
quartz (L1314) and MgF2
(L1835) are available.
These are highly stable light
sources with calibrated radiant
intensity. Since we are certified
as an ASNITE-calibration laboratory, we calibrate spectral irradiance in a range from 200 nm
to 400 nm (L7820-02).
Left: L1835, Right: L1314
TLSOF0140
Left: Lamp housing, Right: Power supply
TLSXF0159
For details, please refer to the catalogs which are available from our sales office.
* PATENT: USA; 5552669, 5646487 and other (10), EUROPE; 0685874B, 0700072B and other (7), JAPAN; 2740738, 2769436 and other (7)
PATENT PENDING: EUROPE 3, JAPAN 6
Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office.
Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications are
subject to change without notice. No patent rights are granted to any of the circuits described herein. ©2011 Hamamatsu Photonics K.K.
HAMAMATSU PHOTONICS K.K.
www.hamamatsu.com
HAMAMATSU PHOTONICS K.K., Electron Tube Division
314-5, Shimokanzo, Iwata City, Shizuoka Pref., 438-0193, Japan, Telephone: (81)539/62-5248, Fax: (81)539/62-2205
U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P. O. Box 6910, Bridgewater. N.J. 08807-0910, U.S.A., Telephone: (1)908-231-0960, Fax: (1)908-231-1218 E-mail: [email protected]
Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49)8152-375-0, Fax: (49)8152-2658 E-mail: [email protected]
France: Hamamatsu Photonics France S.A.R.L.: 19, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: (33)1 69 53 71 00, Fax: (33)1 69 53 71 10 E-mail: [email protected]
United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road Welwyn Garden City Hertfordshire AL7 1BW, United Kingdom, Telephone: 44-(0)1707-294888, Fax: 44(0)1707-325777 E-mail: [email protected]
North Europe: Hamamatsu Photonics Norden AB: Smidesvägen 12, SE-171-41 SOLNA, Sweden, Telephone: (46)8-509-031-00, Fax: (46)8-509-031-01 E-mail: [email protected]
TLS 1006E01
Italy: Hamamatsu Photonics Italia: S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39)02-935 81 733, Fax: (39)02-935 81 741 E-mail: [email protected]
JUL. 2011 IP
(1000)
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