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| PHOTOMULTIPLIER TUBE R2368 TRANSMISSION MODE PHOTOCATHODE Good Spatial Uniformity, Wide Angle of Radiant Input Multialkali Photocathode For UV-Visible Spectrophotometers and General Applications R2386 is a 28mm (1-1/8 Inch) diameter, side-on photomultiplier tube having a transmission mode multialkali photocathode. The transmission mode photocathode offers better spatial uniformity and wider angle of radiation input than conventional side-on tubes which have opaque photocathodes (reflection mode photocathode). Also, this type of photocathodes is independent of polarized light. The R2368 has a 9-stage dynode which provides high gain and employs an HA Coating for noise reduction and an "Anti-hysteresis design". GENERAL Parameter Spectral Response Wavelength of Maximum Response Material Photocathode Useful Area (Minimum) Window Material Structure Dynode Number of Stages Base Suitable Socket Suitable Socket Assembly Direct Interelectrode Anode to Last Dynode Capacitance Anode to All Other Electrodes Description/Value 185 to 850 420 Multialkali 16 x 18 UV glass Circular-cage 9 JEDEC No. B11-88 E678-11A E717-05 1.2 3.4 Unit nm nm -- mm -- -- -- -- -- pF pF Figure 1: Typical Spectral Response TPMSB0148EA 100 MAXIMUM RATINGS (Absolute Maximum Values) CATHODE RADIANT SENSITIVITY (mA/W) QUANTUM EFFICIENCY (%) Parameter Anode and Cathode Supply Voltage Anode and Last Dynode Average Anode Current (NOTE 1) Ambient Temperature Value 1250 250 0.1 -80 to +50 Unit V V mA C CATHODE RADIANT SENSITIVITY 10 QUANTUM EFFICIENCY 1 CHARACTERISTICS (at 25C) Parameter Anode Luminous Sensitivity (NOTE 2, 3) Cathode Luminous Sensitivity (NOTE 4) Cathode Red/White Ratio (NOTE 5) Gain (NOTE 2) Anode Dark Current (NOTE 2) Anode Pulse Rise Time (NOTE 2, 6) Current Hysteresis (NOTE 7) Voltage Hysteresis (NOTE 7) Min. 50 80 -- -- -- -- -- -- Typ. 200 150 0.15 1.3 x 106 5 1.2 0.1 1.0 Max. -- -- -- -- 50 -- -- -- Unit A/lm A/lm -- -- nA ns % % 0.1 0.01 200 400 600 800 1000 WAVELENGTH (nm) 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 HAMAMATS U 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. (c) 1998 Hamamatsu Photonics K.K. PHOTOMULTIPLIER TUBE R2368 Figure 2: Typical Spatial Uniformity X-Axis 100 RELATIVE SENSITIVITY (%) Y-Axis 80 60 40 20 0 15 10 5 0 5 10 15 15 Y X 10 5 0 5 10 15 DISTANCE FROM CENTER OF PHOTOCATHODE (mm) CATHODE ANODE DISTANCE FROM CENTER OF PHOTOCATHODE (mm) SPOT SIZE : 1mm DIA. SUPPLY VOLTAGE: 1000V WAVELENGTH : 400nm TPMSB0149EA Figure 3: Dimensional Outline and Basing Diagram (Unit: mm) 29.0 1.7 18MIN. PHOTOCATHODE DY6 6 NOTES 1. Averaged over any interval of 30 seconds maximum. 2. Supply voltage of 1000 volts is applied between the cathode and the anode using the voltage distribution ratio shown below. Electrodes Distribution Ratio K 1 Dy1 1 Dy2 1 Dy3 1 Dy4 1 Dy5 1 Dy6 1 Dy7 1 Dy8 1 Dy9 1 P K: Cathode, Dy: Dynode, P: Anode DY5 16MIN. DY4 4 76MAX. DY3 3 90MAX. DY2 2 5 7 DY7 8 DY8 9 DY9 10 P 3. The light source is a tungsten filament lamp operated at a distribution temperature of 2856K. The light input is 0.01 microlumen. 4. Under the same conditions as Note 3 except that the light input is 0.01 lumen and 100 volts are applied between the cathode and all other electrodes connected together as an anode. 5. The red/white ratio is the quotiant of the cathode current measured using a red filter (Toshiba R-68) interposed between the light source and the tube by the cathode current measured with the filter removed under the same condition as Note 4. 49.0 2.5 1 11 K DY1 DIRECTION OF LIGHT 32.2 0.5 11 PIN BASE JEDEC No. B11-88 HA COATING TPMSA0026EA 6. The rise time is the time for the output pulse to rise from 10% to 90% of the peak amplitude when the entire photocathode is illuminated by a delta function light pulse. 7. Hysteresis is a temporary instability in anode current after light and voltage are applied. Warning-Personal Safety Hazards Electrical Shock -- Operating voltage applied to this device presents shock hazard. HAMAMATSU PHOTONICS K.K., Electoron Tube Center 314-5, Shimokanzo, Toyooka-village, Iwata-gun, Shizuoka-ken, 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 Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49)8152-375-0, Fax: (49)8152-2658 France: Hamamatsu Photonics France S.A.R.L.: 8, 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 United Kingdom: Hamamatsu Photonics UK Limted: Lough Point, 2 Gladbeck Way, Windmill Hill, Enfield, Middlesex EN2 7JA, United Kingdom, Telephone: (44)181-367-3560, Fax: (44)181-367-6384 North Europe: Hamamatsu Photonics Norden AB: Farogatan 7, S-164-40 Kista Sweden, Telephone: (46)8-703-29-50, Fax: (46)8-750-58-95 Italy: Hamamatsu Photonics Italia: S.R.L.: Via Della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39)2-935 81 733, Fax: (39)2-935 81 741 TPMS1043E01 JUN. 1998 |
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