Neutron decay of deep hole states and isobaric analog states in 115Sn populated by the (3He, α) reaction at 102 MeV

P. O. Söderman, A. Ringbom, J. Blomgren, N. Olsson, L. Nilsson, J. A. Bordewijk, S. Brandenburg, G. Van 't Hof, M. A. Hofstee, H. Van der Ploeg, S. Y. Van der Werf, A. Krasznahorkay, A. Bałanda, D. Chmielewska, H. Laurent

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Abstract

Neutron decay of excited hole states and isobaric analog states (IAS) populated by the 116Sn(3He,α) reaction at an energy of 102 MeV has been investigated. The α-particles were analysed in a magnetic spectrograph positioned at 1.4° and detected with a multiwire drift chamber. Excitation energies in 115Sn up to 23 MeV were studied. An array of neutron detectors was positioned around the target at angles ranging from 68° to 209°. The neutron data were analysed in terms of decay into final states, using statistical model calculations as a tool to extract lower limits of nonstatistical decay. Nonstatistical decay was observed from states up to an excitation energy of about 18 MeV. The neutron emission of the IAS is compatible with 100% statistical decay.

Original languageEnglish
Pages (from-to)79-107
Number of pages29
JournalNuclear Physics A
Volume683
Issue number1-4
DOIs
Publication statusPublished - Feb 26 2001

Keywords

  • Comparison with statistical model calculations
  • Measured neutron decay of hole states
  • Nuclear reaction Sn(He, α), E=102 MeV

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Söderman, P. O., Ringbom, A., Blomgren, J., Olsson, N., Nilsson, L., Bordewijk, J. A., Brandenburg, S., Van 't Hof, G., Hofstee, M. A., Van der Ploeg, H., Van der Werf, S. Y., Krasznahorkay, A., Bałanda, A., Chmielewska, D., & Laurent, H. (2001). Neutron decay of deep hole states and isobaric analog states in 115Sn populated by the (3He, α) reaction at 102 MeV. Nuclear Physics A, 683(1-4), 79-107. https://doi.org/10.1016/S0375-9474(00)00469-3