A Novel Digital Pulse-Shape Analysis for High-Resolution Position-Sensitive Gamma-Ray Spectroscopy

A novel digital pulse-shape analysis (DPSA) was performed for high-resolution position-sensitive gamma-ray spectroscopy with coaxial-type high-purity germanium (HpGe) detectors. The DPSA consisted of two stages that determined the pulse height, the interaction point and the start time by using the c...

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Bibliographic Details
Published in:IEEE transactions on nuclear science 2010-10, Vol.57 (5), p.2631-2637
Main Authors: Lee, Ju Hahn, Jung, Hyo Soon, Cho, Hwa Youn, Kwon, Young Kwan, Lee, Chun Sik
Format: Article
Language:English
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Summary:A novel digital pulse-shape analysis (DPSA) was performed for high-resolution position-sensitive gamma-ray spectroscopy with coaxial-type high-purity germanium (HpGe) detectors. The DPSA consisted of two stages that determined the pulse height, the interaction point and the start time by using the chi-square fitting the digitally recorded pulse shapes with calculated shapes. As the DPSA was applied to gamma-ray spectroscopy using HpGe coaxial detectors, we obtained the energy spectra, the time-difference spectra and the interaction depth profiles for the gamma rays emitted from 133 Ba and 22 Na standard sources. The efficiency of the spectroscopic analysis using the DPSA was compared with that using a conventional analog signal process (CASP). Furthermore, we determined the half-lifetime of the first excited state in 133 Cs by using the DPSA.
ISSN:0018-9499
1558-1578
DOI:10.1109/TNS.2010.2053385