Evidence of nonstatistical neutron emission following β decay near doubly magic 132Sn

IDS Collaboration

doi:10.1103/PhysRevC.108.024311

publishedVersion

Katso/Avaa

1.7 Mb

Lataukset:

Show download details Hide download details

IDS Collaboration. (2023). Evidence of nonstatistical neutron emission following β decay near doubly magic 132Sn. Physical Review C, 108, Article 024311. https://doi.org/10.1103/PhysRevC.108.024311

Julkaistu sarjassa

Physical Review C

Tekijät

IDS Collaboration

Päivämäärä

2023

Tekijänoikeudet

Models of the β-delayed neutron emission (βn) assume that neutrons are emitted statistically via an intermediate compound nucleus post β decay. Evidence to the contrary was found in an 134Inβ-decay experiment carried out at ISOLDE CERN. Neutron emission probabilities from the unbound states in 134Sn to known low-lying, single-particle states in 133Sn were measured. The neutron energies were determined using the time-of-flight technique, and the subsequent decay of excited states in 133Sn was studied using γ-ray detectors. Individual βn probabilities were determined by correlating the relative intensities and energies of neutrons and γ rays. The experimental data disagree with the predictions of representative statistical models which are based upon the compound nucleus postulate. Our results suggest that violation of the compound nucleus assumption may occur in β-delayed neutron emission. This impacts the neutron-emission probabilities and other properties of nuclei participating in t ... showmore

Julkaisija

American Physical Society (APS)

ISSN Hae Julkaisufoorumista

2469-9985

Rahoittaja(t)

Euroopan komissio

Rahoitusohjelmat(t)

The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.

Lisätietoja rahoituksesta

This research was sponsored in part by the Office of Nuclear Physics, U. S. Department of Energy under Award No. DE-FG02-96ER40983 (UTK) and No. DE-AC05-00OR22725 (ORNL), and by the National Nuclear Security Administration under the Stewardship Science Academic Alliances program through DOE Award No. DE-NA0002132. M.P.-S. acknowledges the funding support from the Polish National Science Center un ... showmore

Lisenssi

Ellei muuten mainita, aineiston lisenssi on In Copyright

Näytetään aineistoja, joilla on samankaltainen nimeke tai asiasanat.

Single-particle shell strengths near the doubly magic nucleus 56Ni and the 56Ni(p,γ)57Cu reaction rate in explosive astrophysical burning

Kahl, D.; Woods, P.J.; Poxon-Pearson, T.; Nunes, F.M.; Brown, B.A.; Schatz, H.; Baumann, T.; Bazin, D.; Belarge, J.A.; Bender, P.C.; Elman, B.; Estrade, A.; Gade, A.; Kankainen, A.; Lederer-Woods, C.; Lipschutz, S.; Longfellow, B.; Lonsdale, S.-J.; Lunderberg, E.; Montes, F.; Ong, W.J.; Perdikakis, G.; Pereira, J.; Sullivan, C.; Taverner, R.; Weisshaar, D.; Zegers, R. (Elsevier BV, 2019)

Angle-integrated cross-section measurements of the 56Ni(d,n) and (d,p) stripping reactions have been performed to determine the single-particle strengths of low-lying excited states in the mirror nuclei pair 57Cu−57Ni ...
Mass measurements towards doubly magic 78Ni : Hydrodynamics versus nuclear mass contribution in core-collapse supernovae

Giraud, S.; Canete, L.; Bastin, B.; Kankainen, A.; Fantina, A.F.; Gulminelli, F.; Ascher, P.; Eronen, T.; Girard, Alcindor V.; Jokinen, A.; Khanam, A.; Moore, I.D.; Nesterenko, D.A.; de Oliveira, Santos F.; Penttilä, H.; Petrone, C.; Pohjalainen, I.; De Roubin, A.; Rubchenya, V.; Vilen, M.; Äystö, J. (Elsevier BV, 2022)

We report the first high-precision mass measurements of the neutron-rich nuclei 74,75Ni and the clearly identified ground state of 76Cu, along with a more precise mass-excess value of 78Cu, performed with the double Penning ...
Detailed spectroscopy of doubly magic 132Sn

IDS Collaboration (American Physical Society, 2020)

The structure of the doubly magic Sn-132(50)82 has been investigated at the ISOLDE facility at CERN, populated both by the beta(-) decay of In-132 and beta(-)-delayed neutron emission of In-133. The level scheme of Sn-13(2) ...
Further Evidence for Shape Coexistence in 79Znm near Doubly Magic 78Ni

Nies, L.; Canete, L.; Dao, D. D.; Giraud, S.; Kankainen, A.; Lunney, D.; Nowacki, F.; Bastin, B.; Stryjczyk, M.; Ascher, P.; Blaum, K.; Cakirli, R. B.; Eronen, T.; Fischer, P.; Flayol, M.; Girard Alcindor, V.; Herlert, A.; Jokinen, A.; Khanam, A.; Köster, U.; Lange, D.; Moore, I. D.; Müller, M.; Mougeot, M.; Nesterenko, D. A.; Penttilä, H.; Petrone, C.; Pohjalainen, I.; de Roubin, A.; Rubchenya, V.; Schweiger Ch.; Schweikhard, L.; Vilen, M.; Äystö, J. (American Physical Society (APS), 2023)

Isomers close to doubly magic 78 28Ni50 provide essential information on the shell evolution and shape coexistence near the Z ¼ 28 and N ¼ 50 double shell closure. We report the excitation energy measurement of the 1=2þ ...
Superallowed α Decay to Doubly Magic 100Sn

Auranen, K.; Seweryniak, D.; Albers, M.; Ayangeakaa, A. D.; Bottoni, S.; Carpenter, M. P.; Chiara, C. J.; Copp, P.; David, H. M.; Doherty, D. T.; Harker, J.; Hoffman, C. R.; Janssens, R. V. F.; Khoo, T. L.; Kuvin, S. A.; Lauritsen, T.; Lotay, G.; Rogers, A. M.; Sethi, J.; Scholey, Catherine; Talwar, R.; Walters, W. B.; Woods, P. J.; Zhu, S. (American Physical Society, 2018)

We report the first observation of the Xe108→Te104→Sn100 α-decay chain. The α emitters, Xe108 [Eα=4.4(2) MeV, T1/2=58-23+106 μs] and Te104 [Eα=4.9(2) MeV, T1/2<18 ns], decaying into doubly magic Sn100 were produced using ...