High-purity germanium detectors

Fig. 1. (Top) y-Ray energy spectrum of the reaction 19F(p,ay)160 measured by a 3-inch Nal detector. Proton energy is 2.7 MeV, sample material is fluorapatite. (Middle) y-Ray energy spectrum for the same reaction acquired by a high purity germanium detector. The sample is meteoritic material. Low energy lines from several other nuclear reactions can be identified. (Bottom) Low-energy y-ray spectrum from 19F(p,p y)19F inelastic scattering recorded with a thin Ge(Li) detector. Reproduced with permission from Grambole and Noll [59],...

Radioactivity measurements. 21 At radioactivity in single reaction mixtures was determined using high purity germanium detector (EG G Ortec, USA). 

FIGURE 32-4 Gamma-ray spectrum of a soif sample taken with a high-purity germanium detector (Adapted from Nuclear Physics Laboratory, University of Cyprus, with permission.)... 

HPGe High-purity germanium (detector) INAA Instrumental neutron activation analysis RIA Radioimmunoassay... 

By 1975 the Ge(Li) detector had been supplanted by a newer, more rugged device the high-purity germanium detector. This germanium detector construction is produced without the lithium-drift compensation. Consequently, it is as impervious to warm-up as the Si(Li) detector. 

The activity of the fission product was estimated with a multichannel analyzer and a high purity germanium detector. 

The International Electrotechnical Commission published detailed instructions for testing of semiconductor detectors. For gamma-ray detectors, the lEC Publication 656 (1979), "Test Procedures for High-Purity Germanium Detectors for X and Gamma Radiation" can be ordered from the Bureau Central de la Commission E1ectrotechnique Internationale, 1, rue de Varembe, Geneve, Suisse. 

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