Accession Number : AD0737625

Title :   Electron Spectroscopy with Silicon Surface Barrier Detectors at Liquid Helium Temperatures.

Descriptive Note : Technical rept. 1 Jul-31 Dec 71,

Corporate Author : KANSAS UNIV LAWRENCE DEPT OF PHYSICS AND ASTRONOMY

Personal Author(s) : Barr,Kevin P. ; Sapp,Richard C. ; Tarvin,John T.

Report Date : 01 FEB 1972

Pagination or Media Count : 22

Abstract : In connection with the development of apparatus for the study of beta-radiations with energies of up to 500 keV from nuclei oriented at dilution refrigerator temperatures, four commercial silicon surface barrier detectors were tested for resolution as a function of temperature and applied bias. Resolutions of 8 keV (FWHM) at liquid helium temperatues were obtained at only 20 V bias. Problems with reliability and breakup of the aluminum back surface, as well as subsequent repair, are discussed, and comparisons are made to other work using cooled semiconductor detectors for beta-spectroscopy. (Author)

Descriptors :   (*RADIATION MEASURING INSTRUMENTS, SEMICONDUCTOR DEVICES), (*BETA RAY SPECTROSCOPY, RADIATION MEASURING INSTRUMENTS), SILICON, PULSE HEIGHT ANALYZERS, CRYOGENICS

Subject Categories : Nuclear Instrumentation

Distribution Statement : APPROVED FOR PUBLIC RELEASE