[Formula Presented]-decay half-lives of new neutron-rich isotopes [Formula Presented] and levels in [Formula Presented]

M. Asai, S. Ichikawa, K. Tsukada, M. Sakama, M. Shibata, Y. Kojima, A. Osa, I. Nishinaka, Y. Nagame, K. Kawade, T. Tachibana

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

[Formula Presented]-decay half-lives of new neutron-rich isotopes [Formula Presented] and [Formula Presented] produced in the 20 MeV proton-induced fission of [Formula Presented] have been determined to be 19.4(27) s and 8.2(13) s, respectively, using a gas-jet coupled on-line isotope separator. The present half-lives and those of the recently identified nuclei [Formula Presented] [Formula Presented] were compared with theoretical predictions. The recent calculation by the gross theory with the new one-particle strength functions shows quite good agreement with the experimental half-lives. Excited states of the daughter nuclides [Formula Presented] and [Formula Presented] have been established for the first time. Level energies of the first [Formula Presented] states in even-even Dy isotopes were found to show an irregular behavior at [Formula Presented] and increasing deformation toward the neutron midshell around [Formula Presented].

Original languageEnglish
Pages (from-to)3060-3065
Number of pages6
JournalPhysical Review C - Nuclear Physics
Volume59
Issue number6
DOIs
Publication statusPublished - Jan 1 1999

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half life
isotopes
neutrons
decay
gas jets
nuclides
separators

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

[Formula Presented]-decay half-lives of new neutron-rich isotopes [Formula Presented] and levels in [Formula Presented]. / Asai, M.; Ichikawa, S.; Tsukada, K.; Sakama, M.; Shibata, M.; Kojima, Y.; Osa, A.; Nishinaka, I.; Nagame, Y.; Kawade, K.; Tachibana, T.

In: Physical Review C - Nuclear Physics, Vol. 59, No. 6, 01.01.1999, p. 3060-3065.

Research output: Contribution to journalArticle

Asai, M, Ichikawa, S, Tsukada, K, Sakama, M, Shibata, M, Kojima, Y, Osa, A, Nishinaka, I, Nagame, Y, Kawade, K & Tachibana, T 1999, '[Formula Presented]-decay half-lives of new neutron-rich isotopes [Formula Presented] and levels in [Formula Presented]', Physical Review C - Nuclear Physics, vol. 59, no. 6, pp. 3060-3065. https://doi.org/10.1103/PhysRevC.59.3060
Asai, M. ; Ichikawa, S. ; Tsukada, K. ; Sakama, M. ; Shibata, M. ; Kojima, Y. ; Osa, A. ; Nishinaka, I. ; Nagame, Y. ; Kawade, K. ; Tachibana, T. / [Formula Presented]-decay half-lives of new neutron-rich isotopes [Formula Presented] and levels in [Formula Presented]. In: Physical Review C - Nuclear Physics. 1999 ; Vol. 59, No. 6. pp. 3060-3065.
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