Accession Number : AD0284020

Title :   AN EVALUATION OF CADMIUM SULFIDE AS A NUCLEAR RADIATION DETECTOR

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : MILLS,DARREL LEROY

Report Date : AUG 1962

Pagination or Media Count : 1

Abstract : Solid state radiation detectors were constructed using crystal platelets of CdS. Both intrinsic and p-n junction detectors were made and evaluated. Although alpha particles were detected by both types of detectors, the mobility-lifetime product of the charge carriers resulted in the pulse response not being proportional to the energy of the incident particle. The best experimental value for the mobility-lifetime product in CdS was 2.6 x 1 over 10 to the sixth power sq cm/volt for the electrons and 2.1 x 1 over 10 to the sixth power sq cm/volt for the holes. Also an experimental value of 5.2 electron volts dissipated per hole-electron pair formed was determined. A resolution of 6.8% was obtained with one detector. Other phenomena such as the trapping of the charge carriers and the ionization of neutral impurity atoms also were evident in the crystal. (Author)

Descriptors :   *CADMIUM COMPOUNDS, *CRYSTALS, *DETECTORS, *SULFIDES, RADIATION MEASUREMENT SYSTEMS COMPONENTS, SOLID STATE PHYSICS

Distribution Statement : APPROVED FOR PUBLIC RELEASE