Radiation damage in large-volume n- and p-type high-purity germanium detectors irradiated by 1.5 GeV protons

Author

Koenen, M. ; Brückner, J. ; Körfer, M. ; Taylor, I. ; Wänkel, H.

Author_Institution

Max-Planck-Inst. fur Chem., Mainz, Germany

Volume

1

fYear

1994

fDate

30 Oct-5 Nov 1994

Firstpage

201

Abstract

Excellent energy resolution make germanium detectors prime candidates for gamma-ray spectroscopy in space missions. We present a study of several large-volume n-type and p-type high purity germanium (HPGe) detectors that were damaged by 1.5 GeV protons and examine their performance as function of fluence, operating and anneal temperature, and time. n-type detectors exhibit essential advantages for space applications over p-type detectors. Annealing at about 110 K for both detector types was observed as well as resolution transients up to 134 K. We discuss the observed radiation effects with respect to existing models and show their limitations

Keywords

germanium radiation detectors; proton effects; 1.5 GeV; 110 K; 134 K; anneal temperature; energy resolution; fluence; gamma-ray spectroscopy; large-volume n-type HPGe detectors; large-volume n-type high-purity germanium detectors; large-volume p-type HPGe detectors; large-volume p-type high-purity germanium detectors; operating temperature; radiation damage; resolution transients; space missions; Annealing; Energy resolution; Gamma ray detection; Gamma ray detectors; Germanium; Protons; Radiation detectors; Space missions; Spectroscopy; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference, 1994., 1994 IEEE Conference Record

Conference_Location

Norfolk, VA

Print_ISBN

0-7803-2544-3

Type

conf

DOI

10.1109/NSSMIC.1994.474427

Filename

474427