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The doubly closed shell nucleus Sn-132(50)82

AuthorsBjörnstad, T.; García Borge, María José ; Blomqvist, J.; Von Dincklage, R. D.; Ewan, G. T.; Hoff, P.; Jonson, B.; Kawade, K.; Kerek, A.; Klepper, O.; Lövhöiden, G.; Mattsson, S.; Nyman, G.; Ravn, H. L.; Rudstam, G.; Sistemich, K.; Tengblad, Olof
KeywordsRadioactivity In-132 (β-) [from U(p,fission)]: measured Eγ, Iγ, Ee, Ie, En, T1/2,Qβ, γγ-, βγ-coin
Sn-132 deduced level scheme, B(E2), neutron separation energy, ICC
Uranium carbide target
Ge(Li), Si(Li), He-3 ion chamber, plastic scintillator telescope detectors
On-line mass separation
Issue Date26-May-1986
CitationNuclear Physics A 453(3): 463-485 (1986)
AbstractThe structure of excited states in Sn-132, fed in the β-decay of In-132, has been investigated. Absolute intensities were deduced from γ-singles measurements. From multi-spectrum analysis of γ-lines the half-life of In-132 was determined to be 186 ± 22 ms. A level scheme based on γγ and βγ coincidences is presented. The conversion electron spectrum has been studied and internal conversion coefficients deduced for two low-energy transitions. The total decay energy of In-132 was determined, from γ-gated β-spectra, to be Q(β) = 13.6 ± 0.4 MeV. A lower limit of 6.968 MeV for the neutron separation energy in Sn-132 was deduced from the β-delayed neutron spectrum. The experimental results on the level structure of the doubly closed shell nucleus Sn-132 show that the shell model is applicable even far from the valley of stability.
Description23 pages, 4 tables, 10 figures.
Publisher version (URL)http://dx.doi.org/10.1016/0375-9474(86)90447-1
Appears in Collections:(CFMAC-IEM) Artículos
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