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Title: | Study of the giant Gamow-Teller resonance in nuclear β-decay: The case of Ar-32 |
Authors: | Björnstad, T.; García Borge, María José CSIC ORCID; Dessagne, P.; Von Dincklage, R.-D.; Ewan, G. T.; Hansen, P. G.; Huck, A.; Jonson, B.; Klotz, G.; Knipper, A.; Larsson, P. O.; Nyman, G.; Ravn, H. L.; Richard-Serre, C.; Riisager, K.; Schardt, D.; Walter, G. | Keywords: | Radioactivity Ar-32 (β+p) [from Ca-40 (p,3p6n) reaction] Measured β-delayed Ep, Ip, Eγ, Iγ, pγ-coin Ar-32 deduced T1/2 CaO target On-line mass separation Proton branching ratio β strength function Ge Surface barrier Si CsI detectors |
Issue Date: | 30-Sep-1985 | Publisher: | Elsevier | Citation: | Nuclear Physics A 443(2): 283-301 (1985) | Abstract: | Delayed proton and gamma emissions following the β-decay of Ar-32 have been studied. The half-life of Ar-32 is 98 ± 2 ms, and the T = 2 analogue state in Cl-32 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 S-31. A level scheme up to 8.75 MeV excitation in Cl-32 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. | Description: | 19 pages, 9 figures, 3 tables. | Publisher version (URL): | http://dx.doi.org/10.1016/0375-9474(85)90264-7 | URI: | http://hdl.handle.net/10261/12279 | DOI: | 10.1016/0375-9474(85)90264-7 | ISSN: | 0375-9474 |
Appears in Collections: | (CFMAC-IEM) Artículos |
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