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RCA-4522. 5" Photomultiplier and accessory Light Guide provide a full 4.5 inches of useful diameter of the faceplate. Socket adapters available, too.
with RCA-4522 at the forefront of physics RCA announces a highly desirable complement of characteristics in its n e w 5-inch photomultiplier, RCA-4522, for heretofore u n d r e a m e d of measurements in high-energy physics. W i t h i minimum irradiation area of 15.9 square inches, this highspeed photomultiplier has the RCA Bialkali Photocathode to Deef u p performance levels with clearly superior q u a n t u m îfficiency and low noise. This 5" photomultiplier has a pulse rise time of 3.5 χ 1 0 9 sec. Its noise characteristic has been measured as low as 1 electron/iec-ycnr 2 from the photocathode at 25°C. Typical Q E is 2 8 % m d dark current values are as much as three orders of magniu d e better than S - l l typés. Designed primarily for use in scintillation-counting systems, ilCA-4522 can b e equipped with a high-quality light guide to provide a 4.5-inch diameter flat entrance window faceplate.
At the same time, through the use of available sockets, such as DP2118 and AJ2143, this tube becomes an ideal tool for scientists studying exotic phenomena. For more information on RCA-4522, its accessories, and other RCA Photomultipliers, see your RCA Representative. F o r technical bulletins on specific types or a wall chart covering the RCA Photomultiplier line, contact your RCA Industrial T u b e Distributor or write: RCA Commercial Engineering, Section J 80-Q, Harrison, N.J. 07029.
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