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Title: Internal bremsstrahlung endpoint energy of {sup 54}Mn

Abstract

For {sup 54}Mn there is a discrepancy between the Q{sub EC} obtained from the endpoint energy of the internal bremsstrahlung (IB) spectrum which accompanies the electron capture decay (Q{sub EC}=1353{+-}8 keV) and that obtained from the accepted mass differences (Q{sub EC}=1377{+-}1 keV). This Q value is needed to deduce the partial-half life of the astrophysically interesting {beta}{sup -} decay of {sup 54}Mn from the recently measured {beta}{sup +} partial half-life. To resolve this discrepancy, we have remeasured the endpoint energy of the IB spectrum, by recording coincidences between the IB and the 835-keV {gamma} ray, both detected in Compton-suppressed Ge detectors. The Q{sub EC} we deduce is 1379{+-}8 keV, in agreement with the accepted mass differences. (c) 2000 The American Physical Society.

Authors:
 [1];  [2];  [2];  [2]
  1. Physics Department, Tennessee Technological University, Cookeville, Tennessee 38505 (United States)
  2. Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
Publication Date:
OSTI Identifier:
20216353
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 61; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; MANGANESE 54; BETA DECAY; ELECTRON CAPTURE DECAY; HALF-LIFE; INTERNAL BREMSSTRAHLUNG; GAMMA SPECTRA; EXPERIMENTAL DATA

Citation Formats

Hindi, M. M., Larimer, R.-M., Norman, E. B., and Rech, G. A. Internal bremsstrahlung endpoint energy of {sup 54}Mn. United States: N. p., 2000. Web. doi:10.1103/PhysRevC.61.055501.
Hindi, M. M., Larimer, R.-M., Norman, E. B., & Rech, G. A. Internal bremsstrahlung endpoint energy of {sup 54}Mn. United States. doi:10.1103/PhysRevC.61.055501.
Hindi, M. M., Larimer, R.-M., Norman, E. B., and Rech, G. A. Mon . "Internal bremsstrahlung endpoint energy of {sup 54}Mn". United States. doi:10.1103/PhysRevC.61.055501.
@article{osti_20216353,
title = {Internal bremsstrahlung endpoint energy of {sup 54}Mn},
author = {Hindi, M. M. and Larimer, R.-M. and Norman, E. B. and Rech, G. A.},
abstractNote = {For {sup 54}Mn there is a discrepancy between the Q{sub EC} obtained from the endpoint energy of the internal bremsstrahlung (IB) spectrum which accompanies the electron capture decay (Q{sub EC}=1353{+-}8 keV) and that obtained from the accepted mass differences (Q{sub EC}=1377{+-}1 keV). This Q value is needed to deduce the partial-half life of the astrophysically interesting {beta}{sup -} decay of {sup 54}Mn from the recently measured {beta}{sup +} partial half-life. To resolve this discrepancy, we have remeasured the endpoint energy of the IB spectrum, by recording coincidences between the IB and the 835-keV {gamma} ray, both detected in Compton-suppressed Ge detectors. The Q{sub EC} we deduce is 1379{+-}8 keV, in agreement with the accepted mass differences. (c) 2000 The American Physical Society.},
doi = {10.1103/PhysRevC.61.055501},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 5,
volume = 61,
place = {United States},
year = {2000},
month = {5}
}