Accession Number:

AD0608780

Title:

EFFECTS OF ENERGETIC PHOTON IRRADIATION ON GERMANIUM.

Descriptive Note:

Physical Sciences Research Papers,

Corporate Author:

AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Report Date:

1964-10-01

Pagination or Media Count:

26.0

Abstract:

N-type germanium samples have been exposed at 30C to gamma rays from a 6100 curie Co60 source and X-rays up to 3 Mev produced by bombardment of a tungsten target with 3-Mev electrons from a Van de Graaff generator model KN. From the temperature dependence of carrier concentration for defect levels induced by the X-ray irradiation, evidence has been presented for defect levels at E sub c - 0.2 ev and E sub v 0.26 ev. These levels have been observed in Co60 irradiations. From a study of carrier removal rate as a function of the Fermi level, evidence has also been presented for the existence of a very shallow level, E sub c - 0.07 ev, induced by Co60 gamma rays.

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE