ELECTRON MULTIPLIER R6985-80 With Conversion Dynode, Off-axis Structure for Gas / liquid QMS (Quadruple Mass Spectrometry) SPECIFICATIONS GENERAL Parameter Input Aperture Diameter Dynode Structure Number of Dynode Stages First Dynode Material Total Built-in Resistance Operating Ambient Temperature Storage Temperature Polarity of Detected Ions Description / Value Unit 11 mm Conversion + box and linear focused — 19 — — Al2O3 17.15 MΩ -30 to +50 °C -80 to +50 °C Positive / Negative — MAXIMUM RATINGS Parameter Anode to First Dynode Voltage Anode to Last Dynode Voltage Conversion Supply Voltage Operating Vacuum Level Bake-Out Temperature (at 5 × 10-3 Pa) Average Anode Current A Operating Gain Value -3000 350 ±10 1 × 10-2 No baking 10 1 × 108 Unit V V kV Pa — µA — Figure 1: Typical Gain 109 TPMHB0876EA 108 107 CHARACTERISTICS Unit V — µA pA ns pF Value -1900 1 × 106 5 1 4.5 1.8 106 GAIN Parameter Recommened Supply Voltage Gain (Typ.) DC Linearity (Typ.) Dark Current (Max.) Rise Time (Typ.) Anode to All Other Electrode Capacitance 105 104 NOTE: A Averaged over any interval of 30 seconds maximum. Figure 2: Dimensional Outline (Unit: mm) CONVERSION DYNODE PIN 103 102 -1000 93 ± 1 INPUT APERTURE 11.0 ± 0.2 ELECTRON MULTIPLIER -2500 50.0 ± 0.5 30.0 ± 0.5 2- 3.1 MOUNTING HOLES 22.0 ± 0.5 20.0 ± 0.5 CONVERSION DYNODE -2000 SUPPLY VOLTAGE (V) 12 ± 1 20.0 ± 0.5 58 ± 1 -1500 HIGH VOLTAGE PIN 30.0 ± 0.5 OUTPUT PIN TPMHA0587EA 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. ©2014 Hamamatsu Photonics K.K. -3000 ELECTRON MULTIPLIER R6985-80 POSITIVE ION / NEGATIVE ION DETECTION MECHANISM CONVERSION DYNODE When positive ions strike the conversion dynode, electrons are emitted from the conversion dynode according to the quantity of input ions. These emitted electrons are then guided into the electron multiplier for secondary multiplication. -10 kV Q-POLE ELECTRONS POSITIVE IONS Q-POLE When negative ions strike the conversion dynode, positive ions are emitted from the conversion dynode according to the quantity of input ions. These emitted positive ions then enter the electron multiplier while receiving energy from the difference in potential between the conversion dynode and electron multiplier, and strike the first dynode of the electron multiplier where electrons are released according to the quantity of input positive ions. These electrons are then guided to the second and subsequent dynodes for secondary multiplication. ELECTRONS -1 kV GND CONVERSION DYNODE +10 kV Q-POLE POSITIVE IONS NEGATIVE IONS Q-POLE ELECTRONS -1 kV GND TPMHC0248EA 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, 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)1707-294888, Fax: (44)1707-325777 E-mail: [email protected] North Europe: Hamamatsu Photonics Norden AB: Torshamnsgatan 35 SE-164 40 Kista, Sweden, Telephone: (46)8-509-031-00, Fax: (46)8-509-031-01 E-mail: [email protected] TPMH1339E02 Italy: Hamamatsu Photonics Italia S.r.l.: Strada della Moia, 1 int. 6, 20020 Arese (Milano), Italy, Telephone: (39)02-93581733, Fax: (39)02-93581741 E-mail: [email protected] China: Hamamatsu Photonics (China) Co., Ltd.: B1201 Jiaming Center, No.27 Dongsanhuan Beilu, Chaoyang District, Beijing 100020, China, Telephone: (86)10-6586-6006, Fax: (86)10-6586-2866 E-mail: [email protected] AUG. 2014 IP