Gamow-Teller transitions between proton h 11/2 and neutron h 9/2 partner orbitals in 140I

NP1112-RIBF87 Collaboration

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The excited states of the neutron-rich nucleus 140I were, for the first time, investigated by a β-delayed γ-ray spectroscopy. The parent nuclide 140Te was produced through the in-flight fission of the 238U beam at 345 MeV per nucleon on a 9Be target at the Radioactive Isotope Beam Factory (RIBF), RIKEN in Japan. The half-life of 140Te was measured to be 350(5) ms and the spin-parity of ground state of 140I was found to be 2-. The spin-parities of three levels at 926, 1188, and 1787 keV were assigned as 1+ based on log f t values. These allowed Gamow-Teller (G-T) transition-states could be interpreted as the transformation of a neutron in the h9/2 orbital into a proton in the h11/2 orbital. Systematic features of level structures and G-T transitions are discussed in the frameworks of the large-scale shell model and deformed shell model.

Original languageEnglish
Title of host publication14th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG2017
EditorsKevin Insik Hahn, Young Sun Lee, Sunchan Jeong, Sang Chul Kim, Myung-Ki Cheoun, Kyujin Kwak, Sung-Chul Yoon
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735416420
DOIs
Publication statusPublished - 2018 Apr 25
Event14th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG2017 - Daejeon, Korea, Republic of
Duration: 2017 Jun 272017 Jun 30

Publication series

NameAIP Conference Proceedings
Volume1947
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference14th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG2017
CountryKorea, Republic of
CityDaejeon
Period17/6/2717/6/30

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    NP1112-RIBF87 Collaboration (2018). Gamow-Teller transitions between proton h 11/2 and neutron h 9/2 partner orbitals in 140I. In K. I. Hahn, Y. S. Lee, S. Jeong, S. C. Kim, M-K. Cheoun, K. Kwak, & S-C. Yoon (Eds.), 14th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG2017 [030002] (AIP Conference Proceedings; Vol. 1947). American Institute of Physics Inc.. https://doi.org/10.1063/1.5030830