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THE STATUS OF SILICON JUNCTION NUCLEAR PARTICLE DETECTORS

Journal Article · · Neue Technik See NT, Neue Tech.
OSTI ID:4828730
Nuclear particle detectors are now available which give linear response for protons with energies up to 12 Mev. The 5 mm/sup 2/ units which operate up to 400 v have resolutions for 660 kev Cs/sulp 137/ electrons of 9 kev. The best resolution for alpha particles was realized using thin diffused regions. For a unit having a 0.2 micron diffusion depth, resolutions as low as 17 kev are obtained with Am alpha particles. The voltage rating of units with detecting areas of 2 cm/sulp 2/is at present limited to about 200 v. The resolution obtained for alpha particles with such units depends on amplifier design but values of 50 to 70 kev are readily obtained. The resolution of all units has its best value near the maximum operating bias voltage. Curves of resolution as a function of bias for the various types of unit illustrate this point. The dead layer of a unit is a function of the diffusion depth used in forming the junction. Measurements of this dead layer using optical methods and nuclear particles are compared. The use of charge amplifiers is an accepted practice with silicon junction detectors if the highest resolution is to be obtained in a drift free system. General operating characteristics of such ampliflers are briefly discussed along with a mention of the best nise and clipping times for particular detector types. (auth)
Research Organization:
RCA Victor Research Labs., Montreal
NSA Number:
NSA-16-020674
OSTI ID:
4828730
Journal Information:
Neue Technik See NT, Neue Tech., Journal Name: Neue Technik See NT, Neue Tech. Vol. Vol: 4; ISSN NETEAS1
Country of Publication:
Country unknown/Code not available
Language:
English

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