Nuclear Radiation...
Detect it...measure it...analyze it... with RCA PHOTOMULTIPLIERS R e c e n t RCA a d v a n c e s in multiplier phototube develop m e n t have m a d e detection, observation and m e a s u r e m e n t of fast nuclear p h e n o m e n a more precise t h a n ever. Two extremely-fast r e s p o n s e types, ideally suited to radiation m e a s u r e m e n t s , a r e t h e RCA-7746 and 7 8 5 0 . PRINCIPAL CHARACTERISTICS AND CAPABILITIES:
Type
Wave Length Number of of Stages Maximum Spectral Response
Radiant Luminous Sensitivity* Sensitivity (at 4400A 0 ) in in amps/watt amps/lumen
RCA7746
10
4400A 0
960,000
1,200
RCA7850
12
4400A 0
4,800,000
6,000
* On the basis of a tungsten-filament operated at 2870°K.
Current Ampli fication Factor
Greatest Delay AnodePulse between Rise Time AnodePulses in in seconds seconds
17 χ 106 2 χ 10-9
3 χ 10-10
8.6 X 107 2 X 10-9 3 χ 10-10
light source having a lime-glass envelope
RECOMMENDED APPLICATIONS: • Coincidence a n d general scintillation c o u n t i n g · Nuclear " t i m e of flight" m e a s u r e m e n t s · Detection a n d m e a s u r e m e n t of Cerenkov radiation · Low-level radiation s t u d i e s These are but two of 3 4 different RCA multiplier phototubes...one exactly right for your application. Features of RCA multiplier phototubes include uniform photocathodes, high sensitivity, high gain, good pulseheight resolution combined with high speed and low dark-current at room temperatures. GET ALL THE FACTS in this 32-page catalog on photo and image tubes. Contains characteristics and capabilities of 3 4 multiplier phototubes—33 photo diodes—7 image converter tubes...plus quickselection charts and spectral sensitivity and energy emission curves. Available from your nearby au thorized RCA Distributor . . . or from Commercial Engineering, Sec. J-80-T, RCA, Harrison, N . J . RCA ELECTRONIC COMPONENTS AND DEVICES, HARRISON, N.J.
RCAT h e
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