Exotic decay of <sup>115</sup>Cs

Das, P.; Datta, Ushasi; Chakraborty, S.; Rahaman, A.; Tengblad, O.; Agrawal, B. K.; Becerril, A.; Cederkall, J.; Dey, J.; Gottberg, A.; Imam, Sk Md Adil; Kowalska, M.; Kurcewicz, J.; Lund, M.; Mandal, S.; Madurga, M.; Marginean, N.; Marginean, R.; Mihai, C.; Marroquin, I.; Nacher, E.; Negret, A.; Pascu, S.; Perea, A.; Rapisarda, E.; Rotaru, F.; Ray, J.; Sharma, P.; Stora, T.; Sotty, C.; Vedia, V.; Warr, N.; Wadsworth, R.

Exotic decay of ¹¹⁵Cs

Mark

Das, P. ; Datta, Ushasi ; Chakraborty, S. ; Rahaman, A. ; Tengblad, O. ; Agrawal, B. K. ; Becerril, A. ; Cederkall, J. ^LU ; Dey, J. and Gottberg, A. , et al. (2023) In Physical Review C 108(6).

Abstract: The detailed study of the β⁺/EC decay of the very neutron-deficient and alpha-unbound nucleus ¹¹⁵Cs is presented. The measurement was performed at the ISOLDE, CERN where delayed charged particles and γ rays were detected. The observed delayed γ rays are in agreement with the previously reported characteristics γ rays of ¹¹⁵Xe. Based on the experimental observations, the tentative ground-state spin of ¹¹⁵Cs is suggested to be 7/2⁺ or 9/2⁺. Furthermore, the measured decay branching ratio of delayed protons exceeds the previously reported value. Additionally, new delayed α-branching ratio and several reconstructed proton and α-unbound excited states of ¹¹⁵Xe are... (More); The detailed study of the β⁺/EC decay of the very neutron-deficient and alpha-unbound nucleus ¹¹⁵Cs is presented. The measurement was performed at the ISOLDE, CERN where delayed charged particles and γ rays were detected. The observed delayed γ rays are in agreement with the previously reported characteristics γ rays of ¹¹⁵Xe. Based on the experimental observations, the tentative ground-state spin of ¹¹⁵Cs is suggested to be 7/2⁺ or 9/2⁺. Furthermore, the measured decay branching ratio of delayed protons exceeds the previously reported value. Additionally, new delayed α-branching ratio and several reconstructed proton and α-unbound excited states of ¹¹⁵Xe are being reported for the first time. The properties of proton-unbound states at excitation energies from 3.9–7.9 MeV have been obtained by fitting the delayed proton spectrum via the Bayesian method. The measured lifetimes of these proton-unbound states are in the order of zeptoseconds. (Less)

Please use this url to cite or link to this publication: https://lup.lub.lu.se/record/dba6a00c-c43d-4335-8be2-47c0426e5422

author

Das, P. ; Datta, Ushasi ; Chakraborty, S. ; Rahaman, A. ; Tengblad, O. ; Agrawal, B. K. ; Becerril, A. ; Cederkall, J. ^LU ; Dey, J. and Gottberg, A. , et al. (More)

Das, P. ; Datta, Ushasi ; Chakraborty, S. ; Rahaman, A. ; Tengblad, O. ; Agrawal, B. K. ; Becerril, A. ; Cederkall, J. ^LU ; Dey, J. ; Gottberg, A. ; Imam, Sk Md Adil ; Kowalska, M. ; Kurcewicz, J. ; Lund, M. ; Mandal, S. ; Madurga, M. ; Marginean, N. ; Marginean, R. ; Mihai, C. ; Marroquin, I. ; Nacher, E. ; Negret, A. ; Pascu, S. ; Perea, A. ; Rapisarda, E. ; Rotaru, F. ; Ray, J. ; Sharma, P. ; Stora, T. ; Sotty, C. ; Vedia, V. ; Warr, N. and Wadsworth, R. (Less)

organization

publishing date

2023-12-01

type

Contribution to journal

publication status

published

subject

Subatomic Physics

in

Physical Review C

volume

108

issue

6

article number

064304

publisher

American Physical Society

external identifiers

scopus:85179608426

ISSN

2469-9985

DOI

10.1103/PhysRevC.108.064304

language

English

LU publication?

yes

id

dba6a00c-c43d-4335-8be2-47c0426e5422

date added to LUP

2023-12-07 10:50:23

date last changed

2024-01-04 11:49:49

@article{dba6a00c-c43d-4335-8be2-47c0426e5422,
  abstract     = {{The detailed study of the β<sup>+</sup>/EC decay of the very neutron-deficient and alpha-unbound nucleus <sup>115</sup>Cs is presented. The measurement was performed at the ISOLDE, CERN where delayed charged particles and γ rays were detected. The observed delayed γ rays are in agreement with the previously reported characteristics γ rays of <sup>115</sup>Xe. Based on the experimental observations, the tentative ground-state spin of <sup>115</sup>Cs is suggested to be 7/2<sup>+</sup> or 9/2<sup>+</sup>. Furthermore, the measured decay branching ratio of delayed protons exceeds the previously reported value. Additionally, new delayed α-branching ratio and several reconstructed proton and α-unbound excited states of <sup>115</sup>Xe are being reported for the first time. The properties of proton-unbound states at excitation energies from 3.9–7.9 MeV have been obtained by fitting the delayed proton spectrum via the Bayesian method. The measured lifetimes of these proton-unbound states are in the order of zeptoseconds.}},
  author       = {{Das, P. and Datta, Ushasi and Chakraborty, S. and Rahaman, A. and Tengblad, O. and Agrawal, B. K. and Becerril, A. and Cederkall, J. and Dey, J. and Gottberg, A. and Imam, Sk Md Adil and Kowalska, M. and Kurcewicz, J. and Lund, M. and Mandal, S. and Madurga, M. and Marginean, N. and Marginean, R. and Mihai, C. and Marroquin, I. and Nacher, E. and Negret, A. and Pascu, S. and Perea, A. and Rapisarda, E. and Rotaru, F. and Ray, J. and Sharma, P. and Stora, T. and Sotty, C. and Vedia, V. and Warr, N. and Wadsworth, R.}},
  issn         = {{2469-9985}},
  language     = {{eng}},
  month        = {{12}},
  number       = {{6}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review C}},
  title        = {{Exotic decay of <sup>115</sup>Cs}},
  url          = {{http://dx.doi.org/10.1103/PhysRevC.108.064304}},
  doi          = {{10.1103/PhysRevC.108.064304}},
  volume       = {{108}},
  year         = {{2023}},
}

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Exotic decay of ¹¹⁵Cs