Dependence of photon interaction depth on linear attenuation coefficient in high pure germanium detectors

• Published in: Applied radiation and isotopes Vol. 47; no. 5; pp. 535 - 541
• Main Authors: Yücel, Haluk, Çeti̇ner, M.Atif, Demi̇rel, Hali̇l
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01-05-1996
• ISSN: 0969-8043; 1872-9800
• DOI: 10.1016/0969-8043(95)00325-8

The present work is concerned with the construction of a semiempirical function
d
e
(
μ,
E
γ
) of the effective photon interaction depth depending upon both the linear attenuation coefficient of Ge and γ-ray energy. The interaction depth results obtained from the measurements in two high purity germanium crystals, which are nearly equal in volume, have been fitted by using a function. The semiempirical function agrees with the measured interaction depth values on the average to within 3–4%. The knowledge of effective interaction depth of γ-rays in germanium detector is a useful parameter in order to calculate the absolute efficiency for any source-to-detector distance on the particular detector.