(\beta\) Decay of \(^{132}\)In and Spectroscopy of \(^{132}\)Sn and \(^{131}\)Sb with the GRIFFIN Spectrometer

• Published in: arXiv.org
• Main Authors: Whitmore, K, Andreoiu, C, Garcia, F H, Ortner, K, Holt, J D, Miyagi, T, Ball, G C, Bernier, N, Bidaman, H, Bildstein, V, Bowry, M, Cross, D S, Dunlop, M R, Dunlop, R, Garnsworthy, A B, Garrett, P E, Henderson, J, Measures, J, Olaizola, B, Park, J, Petrache, C M, Pore, J L, Smith, J K, Southall, D, Svensson, C E, Ticu, M, Turko, J, Zidar, T
• Format: Paper
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 02.08.2020
• Subjects: Antimony; Beta decay; Beta rays; Excitation; Gamma rays; Neutron decay; Neutron emission; Neutrons; Spectrum analysis; Tin
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.2008.00548

Spectroscopy of doubly magic \(^{132}_{50}\)Sn\(_{82}\) has been performed with the GRIFFIN spectrometer at TRIUMF-ISAC following the \(\beta\) decay of \(^{132}_{49}\)In\(_{83}\). The analysis has allowed for the placement of a total of 70 transitions and 29 excited states in \(^{132}\)Sn. Detailed spectroscopy has also been performed on \(^{131}\)Sb, resulting from the \(\beta\) decay of \(^{131}\)Sn, produced from the \(\beta\)-delayed neutron decay of \(^{132}\)In. Measurement of \(\gamma\)-rays in both \(^{131}\)Sn and \(^{131}\)Sb has led to the determination of the \(\beta\)-delayed neutron emission probability, \(P_{n}\), from \(^{132}\)In. This is the first time the \(P_{n}\) has been measured for this nucleus using \(\gamma\) spectroscopy, and the new value of 12.3(4)% is consistent with the most recent \(\beta-n\) counting experiment. Additionally, \(\gamma\)-\(\gamma\) angular correlations have been performed in \(^{132}\)Sn, supporting the spin assignments of several excited states. Novel ab initio calculations are presented which describe several of the excited states, and these are compared to the experimental spectrum.