Weak-coupling structure of proton resonant states in 23Al studied with RI beam at CNS

J. J. He, S. Kubono, T. Teranishi, M. Notani, S. Michimasa, H. Baba, S. Nishimura, M. Nishimura, Y. Yanagisawa, N. Hokoiwa, M. Kibe, Y. Gono, J. Y. Moon, J. H. Lee, C. S. Lee, H. Iwasaki, S. Kato

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

Abstract

Proton resonances in 23Al have been investigated for the first time by the resonant elastic and inelastic scattering of 22Mg+p by using a 4.38 MeV/nucleon 22Mg beam bombarding a thick Hydrogen target. The low-energy 22Mg beam was separated by the CNS radioactive ion beam separator (CRIB). A new resonant state due to elastic scattering was observed at Ex = 3.00 MeV with a Jπ = (3/2+) assignment. Other three excited states due to resonant inelastic scattering at 3.14, 3.26 and 3.95 MeV were identified and all mainly decay to the first excited state in 22Mg by the proton emissions. The newly observed 3.95-MeV state probably has a spin-parity of Jπ = (7/2 +). The resonant properties were determined from an R-matrix analysis of the excitation functions. The weak-coupling structure in 23Al is discussed in conjunction with a shell-model calculation.

Original languageEnglish
Title of host publicationORIGIN OF MATTER AND EVOLUTION OF GALAXIES
Subtitle of host publicationInternational Symposium on Origin of Matter and Evolution of Galaxies 2005: New Horizon of Nuclear Astrophysics and Cosmology
Pages395-399
Number of pages5
DOIs
Publication statusPublished - Dec 1 2006
EventORIGIN OF MATTER AND EVOLUTION OF GALAXIES: International Symposium on Origin of Matter and Evolution of Galaxies 2005: New Horizon of Nuclear Astrophysics and Cosmology - Tokyo, Japan
Duration: Nov 8 2005Nov 11 2005

Publication series

NameAIP Conference Proceedings
Volume847
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherORIGIN OF MATTER AND EVOLUTION OF GALAXIES: International Symposium on Origin of Matter and Evolution of Galaxies 2005: New Horizon of Nuclear Astrophysics and Cosmology
CountryJapan
CityTokyo
Period11/8/0511/11/05

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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