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Title: The (d,{sup 2}He) reaction on {sup 76}Se and the double-{beta}-decay matrix elements for A=76

Abstract

The (d,{sup 2}He) charge-exchange reaction on {sup 76}Se was studied at an incident energy of 183 MeV. The outgoing two protons in the {sup 1}S{sub 0} state, referred to as {sup 2}He, were both momentum analyzed and detected by the same spectrometer and detector. The experiment was performed at KVI, Groningen, using the magnetic spectrometer BBS at three angular positions: 0 deg., 2.5 deg., and 5 deg. Excitation-energy spectra of the residual nucleus {sup 76}As were obtained with an energy resolution of about 120 keV (FWHM). Gamow-Teller (GT{sup +}) transition strengths were extracted up to 5 MeV and compared with those from an (n,p) experiment at low resolution. Together with the GT{sup -} transition strengths from the {sup 76}Ge(p,n) experiment leading to the same intermediate nucleus, the nuclear matrix element of the two-neutrino double-{beta} decay of {sup 76}Ge was evaluated.

Authors:
; ; ; ; ; ;  [1]; ; ;  [2]; ;  [3];  [4];  [2];  [5]
  1. Institut fuer Kernphysik, Westfaelische Wilhelms-Universitaet, D-48149 Muenster (Germany)
  2. Kernfysisch Versneller Instituut, University of Groningen, NL-9747 AA Groningen (Netherlands)
  3. Gesellschaft fuer Schwerionenforschung, D-63291 Darmstadt (Germany)
  4. Vakgroep Subatomaire en Stralingsfysica, Universiteit Gent, B-9000 Gent (Belgium)
  5. Institut fuer Kernphysik, Universitaet zu Koeln, D-50937 Koeln (Germany)
Publication Date:
OSTI Identifier:
21192280
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 78; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevC.78.044301; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ARSENIC 76; CHARGE-EXCHANGE REACTIONS; DOUBLE BETA DECAY; ENERGY RESOLUTION; ENERGY SPECTRA; EXCITATION; GAMOW-TELLER RULES; GERMANIUM 76; HELIUM 2; KEV RANGE 100-1000; KVI; MAGNETIC SPECTROMETERS; MATRIX ELEMENTS; MEV RANGE 100-1000; NEUTRINOS; NUCLEAR MATRIX; NUCLEAR REACTIONS; PROTONS; SELENIUM 76

Citation Formats

Grewe, E -W, Baeumer, C, Dohmann, H, Frekers, D, Hollstein, S, Rakers, S, Thies, J H, Harakeh, M N, Berg, A M. van den, Woertche, H J, Johansson, H, Simon, H, Popescu, L, Savran, D, Institut fuer Kernphysik, Technische Universitaet Darmstadt, D-64289 Darmstadt, and Zilges, A. The (d,{sup 2}He) reaction on {sup 76}Se and the double-{beta}-decay matrix elements for A=76. United States: N. p., 2008. Web. doi:10.1103/PHYSREVC.78.044301.
Grewe, E -W, Baeumer, C, Dohmann, H, Frekers, D, Hollstein, S, Rakers, S, Thies, J H, Harakeh, M N, Berg, A M. van den, Woertche, H J, Johansson, H, Simon, H, Popescu, L, Savran, D, Institut fuer Kernphysik, Technische Universitaet Darmstadt, D-64289 Darmstadt, & Zilges, A. The (d,{sup 2}He) reaction on {sup 76}Se and the double-{beta}-decay matrix elements for A=76. United States. https://doi.org/10.1103/PHYSREVC.78.044301
Grewe, E -W, Baeumer, C, Dohmann, H, Frekers, D, Hollstein, S, Rakers, S, Thies, J H, Harakeh, M N, Berg, A M. van den, Woertche, H J, Johansson, H, Simon, H, Popescu, L, Savran, D, Institut fuer Kernphysik, Technische Universitaet Darmstadt, D-64289 Darmstadt, and Zilges, A. 2008. "The (d,{sup 2}He) reaction on {sup 76}Se and the double-{beta}-decay matrix elements for A=76". United States. https://doi.org/10.1103/PHYSREVC.78.044301.
@article{osti_21192280,
title = {The (d,{sup 2}He) reaction on {sup 76}Se and the double-{beta}-decay matrix elements for A=76},
author = {Grewe, E -W and Baeumer, C and Dohmann, H and Frekers, D and Hollstein, S and Rakers, S and Thies, J H and Harakeh, M N and Berg, A M. van den and Woertche, H J and Johansson, H and Simon, H and Popescu, L and Savran, D and Institut fuer Kernphysik, Technische Universitaet Darmstadt, D-64289 Darmstadt and Zilges, A},
abstractNote = {The (d,{sup 2}He) charge-exchange reaction on {sup 76}Se was studied at an incident energy of 183 MeV. The outgoing two protons in the {sup 1}S{sub 0} state, referred to as {sup 2}He, were both momentum analyzed and detected by the same spectrometer and detector. The experiment was performed at KVI, Groningen, using the magnetic spectrometer BBS at three angular positions: 0 deg., 2.5 deg., and 5 deg. Excitation-energy spectra of the residual nucleus {sup 76}As were obtained with an energy resolution of about 120 keV (FWHM). Gamow-Teller (GT{sup +}) transition strengths were extracted up to 5 MeV and compared with those from an (n,p) experiment at low resolution. Together with the GT{sup -} transition strengths from the {sup 76}Ge(p,n) experiment leading to the same intermediate nucleus, the nuclear matrix element of the two-neutrino double-{beta} decay of {sup 76}Ge was evaluated.},
doi = {10.1103/PHYSREVC.78.044301},
url = {https://www.osti.gov/biblio/21192280}, journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 4,
volume = 78,
place = {United States},
year = {Wed Oct 15 00:00:00 EDT 2008},
month = {Wed Oct 15 00:00:00 EDT 2008}
}