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. ; Taylör, I. ; Wänke, H.

Author_Institution

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

Volume

42

Issue

4

fYear

1995

fDate

8/1/1995 12:00:00 AM

Firstpage

653

Lastpage

658

Abstract

Excellent energy resolution makes 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

annealing; gamma-ray detection; gamma-ray spectrometers; germanium radiation detectors; proton effects; 1.5 GeV; Ge; annealing; gamma-ray spectroscopy; high-purity germanium detectors; n-type detectors; p-type detectors; protons; radiation damage; space missions; Annealing; Energy resolution; Gamma ray detection; Gamma ray detectors; Germanium; Protons; Radiation detectors; Space missions; Spectroscopy; Temperature;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.467896

Filename

467896