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Title: Gamow-Teller strength from the {sup 76}Se({ital n,p}){sup 76}As reaction: Implications for the double {beta} decays of {sup 76}Ge

Abstract

Cross sections have been measured up to 35 MeV excitation for the {sup 76}Se(n,p){sup 76}As reaction at five laboratory angles between 0{degree} and 15{degree}. The incident neutron energy was 198 MeV. The distribution of Gamow-Teller (GT) strength at excitation energies less than 10 MeV was deduced by carrying out a multipole decomposition of the data. The GT strength below 6 MeV excitation was found to be less than 0.9 units, in qualitative agreement with a quasiparticle random-phase approximation calculation. The present results have been compared with data from the {sup 76}Ge(p,n){sup 76}As reaction to obtain an estimate of a lower limit for the lifetime of {sup 76}Ge for {beta}{beta} decay. The estimate is in qualitative agreement with the measured lifetime. {copyright} {ital 1997} {ital The American Physical Society}

Authors:
; ; ; ; ; ; ; ; ;  [1];  [2];  [3]; ;
  1. Simon Fraser University, Burnaby, British Columbia, V5A 1S6 (CANADA)
  2. King Fahd University of Petroleum and Minerals, Dhahran (Saudi Arabia)
  3. California Institute of Technology, Pasadena, California (United States)
Publication Date:
OSTI Identifier:
657387
Resource Type:
Journal Article
Journal Name:
Physical Review, C
Additional Journal Information:
Journal Volume: 55; Journal Issue: 6; Other Information: PBD: Jun 1997
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; SELENIUM 76 TARGET; NEUTRON REACTIONS; GAMOW-TELLER RULES; GERMANIUM 76; DOUBLE BETA DECAY; ARSENIC 76; PROTONS; EXCITATION; CROSS SECTIONS; STRENGTH FUNCTIONS; MULTIPOLES; DECOMPOSITION; QUASI PARTICLES; RANDOM PHASE APPROXIMATION; GERMANIUM 76 TARGET; PROTON REACTIONS

Citation Formats

Helmer, R L, Alford, W.P.,, Helmer, R L, Abegg, R, Frekers, D, Henderson, R S, Jackson, K P, Miller, C A, Vetterli, M.C.,, Punyasena, M A, Olsen, W.C.,, Celler, A, Trudel, A, El-Kateb, S, Engel, J, Henderson, R S, Long, S, and Spicer, B.M.,. Gamow-Teller strength from the {sup 76}Se({ital n,p}){sup 76}As reaction: Implications for the double {beta} decays of {sup 76}Ge. United States: N. p., 1997. Web. doi:10.1103/PhysRevC.55.2802.
Helmer, R L, Alford, W.P.,, Helmer, R L, Abegg, R, Frekers, D, Henderson, R S, Jackson, K P, Miller, C A, Vetterli, M.C.,, Punyasena, M A, Olsen, W.C.,, Celler, A, Trudel, A, El-Kateb, S, Engel, J, Henderson, R S, Long, S, & Spicer, B.M.,. Gamow-Teller strength from the {sup 76}Se({ital n,p}){sup 76}As reaction: Implications for the double {beta} decays of {sup 76}Ge. United States. doi:10.1103/PhysRevC.55.2802.
Helmer, R L, Alford, W.P.,, Helmer, R L, Abegg, R, Frekers, D, Henderson, R S, Jackson, K P, Miller, C A, Vetterli, M.C.,, Punyasena, M A, Olsen, W.C.,, Celler, A, Trudel, A, El-Kateb, S, Engel, J, Henderson, R S, Long, S, and Spicer, B.M.,. Sun . "Gamow-Teller strength from the {sup 76}Se({ital n,p}){sup 76}As reaction: Implications for the double {beta} decays of {sup 76}Ge". United States. doi:10.1103/PhysRevC.55.2802.
@article{osti_657387,
title = {Gamow-Teller strength from the {sup 76}Se({ital n,p}){sup 76}As reaction: Implications for the double {beta} decays of {sup 76}Ge},
author = {Helmer, R L and Alford, W.P., and Helmer, R L and Abegg, R and Frekers, D and Henderson, R S and Jackson, K P and Miller, C A and Vetterli, M.C., and Punyasena, M A and Olsen, W.C., and Celler, A and Trudel, A and El-Kateb, S and Engel, J and Henderson, R S and Long, S and Spicer, B.M.,},
abstractNote = {Cross sections have been measured up to 35 MeV excitation for the {sup 76}Se(n,p){sup 76}As reaction at five laboratory angles between 0{degree} and 15{degree}. The incident neutron energy was 198 MeV. The distribution of Gamow-Teller (GT) strength at excitation energies less than 10 MeV was deduced by carrying out a multipole decomposition of the data. The GT strength below 6 MeV excitation was found to be less than 0.9 units, in qualitative agreement with a quasiparticle random-phase approximation calculation. The present results have been compared with data from the {sup 76}Ge(p,n){sup 76}As reaction to obtain an estimate of a lower limit for the lifetime of {sup 76}Ge for {beta}{beta} decay. The estimate is in qualitative agreement with the measured lifetime. {copyright} {ital 1997} {ital The American Physical Society}},
doi = {10.1103/PhysRevC.55.2802},
journal = {Physical Review, C},
number = 6,
volume = 55,
place = {United States},
year = {1997},
month = {6}
}