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Study of the Giant Gamow-Teller Resonance in Nuclear Beta-Decay - the Case of Ar-32

Bjornstad, T. (author)
Borge, M. J. G. (author)
Dessagne, P. (author)
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Vondincklage, R. D. (author)
Ewan, G. T. (author)
Hansen, P. G. (author)
Huck, A. (author)
Jonson, Björn, 1941 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Klotz, G. (author)
Knipper, A. (author)
Larsson, P. O. (author)
Nyman, Göran Hugo, 1943 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Ravn, H. L. (author)
Richardserre, C. (author)
Riisager, K. (author)
Schardt, D. (author)
Walter, G. (author)
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 (creator_code:org_t)
Elsevier BV, 1985
1985
English.
In: Nuclear Physics A. - : Elsevier BV. - 0375-9474. ; 443:2, s. 283-301
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Delayed proton and gamma emissions following the β-decay of 32Ar have been studied. The half-life of 32Ar is 98 ± 2 ms, and the T = 2 analogue state in 32Cl lies at the excitation energy 5036 ± 12 keV. From the intensity of the feeding to this state the proton intensities can be converted to an absolute scale leading to a total proton branching ratio of (43 ± 3)%. From proton-gamma coincidence measurements it emerges that (1.9 ± 0.2)% of the protons lead to the first-excited state in 31S. A level scheme up to 8.75 MeV excitation in 32Cl has been constructed and the Gamow-Teller strength function has been deduced. The result is a renormalization of the axial-vector strength to (49 ± 5)% of the free-nucleon value.

Subject headings

NATURVETENSKAP  -- Fysik -- Subatomär fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Subatomic Physics (hsv//eng)

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art (subject category)
ref (subject category)

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