A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
First β-decay spectroscopy of 135In and new β-decay branches of 134In (2021)
Piersa-Siłkowska, M., Korgul, A., Benito, J., Fraile, L. M., Adamska, E., Andreyev, A. N., Álvarez-Rodríguez, R., Barzakh, A. E., Benzoni, G., Berry, T., Borge, M. J. G., Carmona, M., Chrysalidis, K., Correia, J. G., Costache, C., Cubiss, J. G., Day, G. T., De Witte, H., Fedorov, D. V., . . . Wilkins, S. G. (2021). First β-decay spectroscopy of 135In and new β-decay branches of 134In. Physical Review C, 104(4), Article 044328. https://doi.org/10.1103/PhysRevC.104.044328
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Piersa-Siłkowska, M.; Korgul, A.; Benito, J.; Fraile, L. M.; Adamska, E.; Andreyev, A. N.; Álvarez-Rodríguez, R.; Barzakh, A. E.; Benzoni, G.; Berry, T.; et al.
Lehti tai sarja: Physical Review C
ISSN: 2469-9985
eISSN: 2469-9993
Julkaisuvuosi: 2021
Ilmestymispäivä: 26.10.2021
Volyymi: 104
Lehden numero: 4
Artikkelinumero: 044328
Kustantaja: American Physical Society (APS)
Julkaisumaa: Yhdysvallat (USA)
Julkaisun kieli: englanti
DOI: https://doi.org/10.1103/PhysRevC.104.044328
Julkaisun avoin saatavuus: Avoimesti saatavilla
Julkaisukanavan avoin saatavuus: Osittain avoin julkaisukanava
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/78810
Tiivistelmä
insights into the nuclear structure of the tin isotopes with magic proton number Z = 50 above the N = 82
shell. The β-delayed γ -ray spectroscopy measurement was performed at the ISOLDE facility at CERN, where
indium isotopes were selectively laser-ionized and on-line mass separated. Three β-decay branches of 134In were established, two of which were observed for the first time. Population of neutron-unbound states decaying via γ rays was identified in the two daughter nuclei of 134In, 134Sn and 133Sn, at excitation energies exceeding the neutron separation energy by 1 MeV. The β-delayed one- and two-neutron emission branching ratios of 134In were determined and compared with theoretical calculations. The β-delayed one-neutron decay was observed to be dominant β-decay branch of 134In even though the Gamow-Teller resonance is located substantially above the two-neutron separation energy of 134Sn. Transitions following the β decay of 135In are reported for the first time, including γ rays tentatively attributed to 135Sn. In total, six new levels were identified in 134Sn on the basis of the βγγ coincidences observed in the 134In and 135In β decays. A transition that might be a candidate for deexciting the missing neutron single-particle 13/2+ state in 133Sn was observed in both β decays and its assignment is discussed. Experimental level schemes of 134Sn and 135Sn are compared with shell-model predictions. Using the fast timing technique, half-lives of the 2+, 4+, and 6+ levels in 134Sn were determined. From the lifetime of the 4+ state measured for the first time, an unexpectedly large B(E2; 4+ → 2+) transition strength was deduced, which is not reproduced by the shell-model calculations.
YSO-asiasanat: fysiikka; ydinfysiikka; neutronit; isotoopit; mittaus; spektroskopia
Liittyvät organisaatiot
Hankkeet, joissa julkaisu on tehty
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- Pakarinen, Janne
- Suomen Akatemia
- Masses, Isomers and Decay Studies for Elemental Nucleosynthesis
- Kankainen, Anu
- Euroopan komissio
OKM-raportointi: Kyllä
Raportointivuosi: 2021
JUFO-taso: 2