Title: Pile-up corrections for high-precision superallowed beta decay half-life measurements via gamma-ray photopeak counting
Authors: Grinyer, G. F ×
Svensson, C. E
Andreoiu, C
Andreyev, A. N
Austin, R. A. E
Ball, G. C
Bandyopadhyay, D
Chakrawarthy, R. S
Finlay, Paul
Garrett, P. E
Hackman, G
Hyland, B
Kulp, W. D
Leach, K. G
Leslie, J. R
Morton, A. C
Pearson, C. J
Phillips, A. A
Sarazin, F
Schumaker, M. A
Smith, M. B
Valiente-Dobon, J. J
Waddington, J. C
Williams, S. J
Wong, J
Wood, J. L
Zganjar, E. F #
Issue Date: 2007
Series Title: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment vol:579 issue:3 pages:1005-1033
Abstract: A general technique that corrects gamma-ray gated beta decay-curve data for detector pulse pile-up is presented. The method includes corrections for non-zero time-resolution and energy-threshold effects in addition to a special treatment of saturating events due to cosmic rays. This technique is verified through a Monte Carlo simulation and experimental data using radioactive beams of Na-26 implanted at the center of the 8 pi gamma-ray spectrometer at the ISAC facility at TRIUMF in Vancouver, Canada. The P-decay half-life of Na-26 obtained from counting 1809-keV gamma-ray photopeaks emitted by the daughter Mg-26 was determined to be T-1/2 = 1.07167 +/- 0.00055 s following a 27 sigma correction for detector pulse pile-up. This result is in excellent agreement with the result of a previous measurement that employed direct beta counting and demonstrates the feasibility of high-precision beta-decay half-life measurements through the use of high-purity germanium gamma-ray detectors. The technique presented here, while motivated by superallowed-Fermi P decay studies, is general and can be used for all half-life determinations (e.g. alpha-, beta-, X-ray, fission) in which a gamma-ray photopeak is used to select the decays of a particular isotope. (c) 2007 Elsevier B.V. All rights reserved.
ISSN: 0168-9002
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Nuclear and Radiation Physics Section
× corresponding author
# (joint) last author

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