NDLI: Neutron damage in mechanically-cooled high-purity germanium detectors for field-portable Prompt Gamma Neutron Activation analysis (PGNAA) systems

Content Provider	IEEE Xplore Digital Library
Author	Seabury, E.H. Van Siclen, C.D. McCabe, J.B. Wharton, C.J. Caffrey, A.J.
Copyright Year	2013
Description	Author affiliation: ORTEC Div., Ametek, Oak Ridge, TN, USA (McCabe, J.B.) \|\| Idano Nat. Lab., USA (Van Siclen, C.D.; Wharton, C.J.; Caffrey, A.J.) \|\| Idaho Nat. Lab., Idaho Falls, ID, USA (Seabury, E.H.)
Abstract	Prompt Gamma Neutron Activation (PGNAA) systems require the use of a gamma-ray spectrometer to record the gamma-ray spectrum of an object under test and allow the determination of the object's composition. Field-portable systems, such as Idaho National Laboratory's PINS system, have used standard liquid-nitrogen-cooled high-purity germanium (HPGe) detectors to perform this function. These detectors have performed very well in the past, but the requirement of liquid-nitrogen cooling limits their use to areas where liquid nitrogen is readily available or produced on-site. Also, having a relatively large volume of liquid nitrogen close to the detector can impact some assessments, possibly leading to a false detection of explosives or other nitrogen-containing chemical. Use of a mechanically-cooled HPGe detector is therefore very attractive for PGNAA applications where nitrogen detection is critical or where liquid-nitrogen logistics are problematic. Mechanically-cooled HPGe detectors constructed from p-type germanium, such as ORTEC's TransSpec, have been commercially available for several years. In order to assess whether these detectors would be suitable for use in a fielded PGNAA system, Idaho National Laboratory (INL) has been performing a number of tests of the resistance of mechanically-cooled HPGe detectors to neutron damage. These detectors have been standard commercially-available p-type HPGe detectors as well as prototype n-type HPGe detectors. These tests compare the performance of these different detector types as a function of crystal temperature and incident neutron fluence on the crystal.
Starting Page	1
Ending Page	4
File Size	262705
Page Count	4
File Format	PDF
e-ISBN	9781479905348
DOI	10.1109/NSSMIC.2013.6829527
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-10-27
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Detectors Neutrons Germanium Radiation effects Crystals Pins Gamma-rays
Content Type	Text
Resource Type	Article

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