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Article
Title Detailed structure of Sn131 populated in the β decay of isomerically purified In131 states
Author(s)

Benito, J (Madrid U.) ; Fraile, L M (Madrid U.) ; Korgul, A (Warsaw U.) ; Piersa-Siłkowska, M (Warsaw U. ; CERN) ; Jaries, A (Jyvaskyla U.) ; Stryjczyk, M (Warsaw U. ; Leuven U. ; Jyvaskyla U.) ; Adamska, E (Warsaw U.) ; Álvarez-Rodríguez, R (Madrid U.) ; Andreyev, A N (York U., England ; JAEA, Ibaraki) ; Barzakh, A E (Higher Sch. of Economics, Moscow) ; Benzoni, G (INFN, Milan) ; Berry, T (Surrey U.) ; Borge, M J G (CERN ; Madrid, Inst. Estructura Materia) ; Carmona, M (Madrid U.) ; Chrysalidis, K (CERN) ; Costache, C (Bucharest, IFIN-HH) ; Cubiss, J G (CERN ; York U., England) ; Goodacre, T Day (CERN ; Manchester U.) ; De Witte, H (Leuven U. ; CERN) ; Eronen, T (Jyvaskyla U.) ; Fedorov, D V (Higher Sch. of Economics, Moscow) ; Fedosseev, V N (CERN) ; Fernández-Martínez, G (Darmstadt, Tech. Hochsch.) ; Fijałkowska, A (Warsaw U.) ; Fila, M (Warsaw U.) ; Fynbo, H (Aarhus U.) ; Galaviz, D (LIP, Lisbon) ; Galve, P (Madrid U.) ; García-Díez, M (Madrid U.) ; Ge, Z (Jyvaskyla U.) ; Greenlees, P T (Jyvaskyla U. ; Helsinki U. ; Helsinki Inst. of Phys.) ; Grzywacz, R (Tennessee U. ; Oak Ridge) ; Henrich, C (Darmstadt, Tech. Hochsch.) ; Huyse, M (Leuven U.) ; Ibáñez, P (Madrid U.) ; Illana, A (Leuven U. ; INFN, Legnaro) ; Janas, Z (Warsaw U.) ; Jolie, J (Cologne U.) ; Judson, D S (Liverpool U.) ; Kankainen, A (Jyvaskyla U.) ; Karayonchev, V (Cologne U.) ; Kicińska-Habior, M (Warsaw U.) ; Konki, J (Jyvaskyla U. ; Helsinki U. ; Helsinki Inst. of Phys.) ; Kurcewicz, J (CERN) ; Lazarus, I (Daresbury) ; Lică, R (CERN ; Bucharest, IFIN-HH) ; López-Montes, A (Madrid U.) ; Lund, M (Aarhus U.) ; Mach, H (NCBJ, Warsaw) ; Madurga, M (CERN ; Tennessee U.) ; Mărginean, N (Bucharest, IFIN-HH) ; Mărginean, R (Bucharest, IFIN-HH) ; Marroquín, I (Madrid, Inst. Estructura Materia) ; Marsh, B A (CERN) ; Martínez, M C (Madrid U.) ; Mazzocchi, C (Warsaw U.) ; Miernik, K (Warsaw U.) ; Mihai, C (Bucharest, IFIN-HH) ; Mihai, R E (Bucharest, IFIN-HH) ; Mougeot, M (Jyvaskyla U.) ; Murias, J R (Madrid U.) ; Nácher, E (Valencia U., IFIC) ; Negret, A (Bucharest, IFIN-HH) ; Olaizola, B (TRIUMF ; Madrid, Inst. Estructura Materia) ; Page, R D (Liverpool U.) ; Paulauskas, S V (Tennessee U.) ; Pascu, S (Bucharest, IFIN-HH) ; Perea, A (Madrid, Inst. Estructura Materia) ; Pucknell, V (Daresbury) ; Raggio, A (Jyvaskyla U.) ; Rahkila, P (Jyvaskyla U. ; Helsinki U. ; Helsinki Inst. of Phys.) ; Raison, C (York U., England) ; Rapisarda, E (CERN) ; Régis, J -M (Cologne U.) ; Rezynkina, K (Leuven U. ; INFN, Padua) ; Rotaru, F (Bucharest, IFIN-HH) ; Rothe, S (CERN) ; Ruotsalainen, J (Jyvaskyla U.) ; Sánchez-Parcerisa, D (Madrid U.) ; Sánchez-Tembleque, V (Madrid U.) ; Schomacker, K (Cologne U.) ; Simpson, G S (LPSC, Grenoble) ; Sotty, Ch (Bucharest, IFIN-HH ; Leuven U.) ; Stan, L (Bucharest, IFIN-HH) ; Stănoiu, M (Bucharest, IFIN-HH) ; Tengblad, O (Madrid, Inst. Estructura Materia) ; Turturica, A (Bucharest, IFIN-HH) ; Udías, J M (Madrid U.) ; Van Duppen, P (Leuven U.) ; Vedia, V (Madrid U.) ; Villa-Abaunza, A (Madrid U.) ; Viñals, S (Madrid, Inst. Estructura Materia) ; Wadsworth, R (York U., England) ; Walters, W B (Maryland U.) ; Warr, N (Cologne U.)

Publication 2024
Number of pages 19
In: Phys. Rev. C 110 (2024) 014328
DOI 10.1103/PhysRevC.110.014328 (publication)
Subject category Nuclear Physics - Theory
Accelerator/Facility, Experiment CERN ISOLDE
Abstract The excited structure of the single-hole nucleus Sn131 populated by the β− decay of In131 was investigated in detail at the ISOLDE facility at CERN. This new experiment took advantage of isomeric purification capabilities provided by resonant ionization, making it possible to independently study the decay of each isomer for the first time. The position of the first-excited νh11/2 neutron-hole state was confirmed via an independent mass spectroscopy experiment performed at the Ion Guide Isotope Separator On-Line facility at the University of Jyväskylä. The level scheme of Sn131 was notably expanded with the addition of 31 new γ-ray transitions and 22 new excited levels. The γ-emitting excited levels above the neutron separation energy in Sn131 were investigated, revealing a large number of states, which in some cases decay by transitions to other neutron-unbound states. Our analysis showed the dependence between the population of these states in Sn131 and the β-decaying In131 state feeding them. Profiting from the isomer selectivity, it was possible to estimate the direct β feeding to the 3/2+ ground and 11/2− isomeric states, disentangling the contributions from the three indium parent states. This made possible to resolve the discrepancies in logft for first-forbidden transitions observed in previous studies, and to determine the β-delayed neutron decay probability (Pn) values of each indium isomers independently. The first measurement of subnanosecond lifetimes in Sn131 was performed in this work. A short T1/2=18(4)-ps value was measured for the 1/2+ neutron single-hole 332-keV state, which indicates an enhanced l-forbidden M1 behavior for the ν3s1/2−1→ν3d3/2−1 transition. The measured half-lives of high-energy states populated in the β decay of the (21/2+) second isomeric state (In131m2) provided valuable information on transition rates, supporting the interpretation of these levels as core-excited states analogous to those observed in the doubly-magic Sn132.
Copyright/License publication: © 2024 authors (License: CC BY 4.0)

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 Record created 2024-08-02, last modified 2024-09-10


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