Structure of ^<28>Mg studied by β-decay spectroscopy of spin-polarized ^<28>Na : The first step of systematic studies on neutron-rich Mg isotopes

Kura, K.; Tajiri, K.; Shimoda, T.; Odahara, A.; Hori, T.; Kazato, M.; Masue, T.; Suga, M.; Takashima, A.; Suzuki, T.; Fukuchi, T.; Hirayama, Y.; Imai, N.; Miyatake, H.; Pearson, M.; Levy, C. D. P.; Jackson, K. P.

doi:info:doi/10.1103/PhysRevC.85.034310

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タイトル	Structure of ^<28>Mg studied by β-decay spectroscopy of spin-polarized ^<28>Na : The first step of systematic studies on neutron-rich Mg isotopes
著者	Kura, K. Kura, K.
	Tajiri, K. Tajiri, K.
	Shimoda, T. Shimoda, T.
	Odahara, A. Odahara, A.
	Hori, T. Hori, T.
	Kazato, M. Kazato, M.
	Masue, T. Masue, T.
	Suga, M. Suga, M.
	Takashima, A. Takashima, A.
	Suzuki, T. Suzuki, T.
	Fukuchi, T. Fukuchi, T.
	Hirayama, Y. Hirayama, Y.
	Imai, N. Imai, N.
	Miyatake, H. Miyatake, H.
	Pearson, M. Pearson, M.
	Levy, C. D. P. Levy, C. D. P.
	Jackson, K. P. Jackson, K. P.
抄録	As the first step of systematic studies on neutron-rich Mg isotopes, the structure of ^<28>Mg has been investigated by β-decay spectroscopy of spin-polarized ^<28>Na at TRIUMF. Spin-parity assignments have been successfully performed for levels in ^<28>Mg by taking advantage of the anisotropic β decay. Previous assignments for three levels were reconfirmed. New assignments were performed for four levels including a newly found ^<2>+ level at 7.461 MeV. The experimental results were compared, on a level-by-level basis, with the shell-model calculation in the model space restricted to the sd shell. Overall good agreement between the experimental and theoretical results indicates dominance of the normal configurations in most of the ^<28>Mg levels. High performance of the present method promises successful application to heavier Mg isotopes to elucidate the shell evolution in the region of the N=20 island of inversion.
公開者	American Physical Society
掲載誌名	Physical Review C
巻	85
号	3
開始ページ	034310
刊行年月	2012-03-13
ISSN	05562813
NCID	AA00773613
DOI (出版社版)	info:doi/10.1103/PhysRevC.85.034310
URL	http://hdl.handle.net/11094/23123
関連情報 (references)	http://prc.aps.org/abstract/PRC/v85/i3/e034310
権利情報	Kura, K. , Tajiri, K. , Shimoda, T. , Odahara, A. , Hori, T. , Kazato, M. , Masue, T. , Suga, M. , Takashima, A. , Suzuki, T. , Fukuchi, T. , Hirayama, Y. , Imai, N. , Miyatake, H. , Pearson, M. , Levy, C. D. P. , Jackson, K. P., Physical Review C, 85, 034310, 2012 "Copyright (2012) by the American Physical Society."
言語	英語
カテゴリ	学術雑誌論文 Journal Article

著者版フラグ	publisher
NII資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
dcmi資源タイプ	text
DCTERMS.bibliographicCitation	Physical Review C.85(3) P.034310
DC.title	Structure of ^<28>Mg studied by β-decay spectroscopy of spin-polarized ^<28>Na : The first step of systematic studies on neutron-rich Mg isotopes
DC.creator	Kura, K.
	Tajiri, K.
	Shimoda, T.
	Odahara, A.
	Hori, T.
	Kazato, M.
	Masue, T.
	Suga, M.
	Takashima, A.
	Suzuki, T.
	Fukuchi, T.
	Hirayama, Y.
	Imai, N.
	Miyatake, H.
	Pearson, M.
	Levy, C. D. P.
	Jackson, K. P.
DC.publisher	American Physical Society
DC.language" scheme="DCTERMS.RFC1766	英語
DCTERMS.issued" scheme="DCTERMS.W3CDTF	2012-03-13
DC.identifier	info:doi/10.1103/PhysRevC.85.034310
DC.identifier" scheme="DCTERMS.URI	http://hdl.handle.net/11094/23123
DCTERMS.abstract	As the first step of systematic studies on neutron-rich Mg isotopes, the structure of ^<28>Mg has been investigated by β-decay spectroscopy of spin-polarized ^<28>Na at TRIUMF. Spin-parity assignments have been successfully performed for levels in ^<28>Mg by taking advantage of the anisotropic β decay. Previous assignments for three levels were reconfirmed. New assignments were performed for four levels including a newly found ^<2>+ level at 7.461 MeV. The experimental results were compared, on a level-by-level basis, with the shell-model calculation in the model space restricted to the sd shell. Overall good agreement between the experimental and theoretical results indicates dominance of the normal configurations in most of the ^<28>Mg levels. High performance of the present method promises successful application to heavier Mg isotopes to elucidate the shell evolution in the region of the N=20 island of inversion.
DC.rights	Kura, K. , Tajiri, K. , Shimoda, T. , Odahara, A. , Hori, T. , Kazato, M. , Masue, T. , Suga, M. , Takashima, A. , Suzuki, T. , Fukuchi, T. , Hirayama, Y. , Imai, N. , Miyatake, H. , Pearson, M. , Levy, C. D. P. , Jackson, K. P., Physical Review C, 85, 034310, 2012 "Copyright (2012) by the American Physical Society."
citation_title	Structure of ^<28>Mg studied by β-decay spectroscopy of spin-polarized ^<28>Na : The first step of systematic studies on neutron-rich Mg isotopes
citation_author	Kura, K.
	Tajiri, K.
	Shimoda, T.
	Odahara, A.
	Hori, T.
	Kazato, M.
	Masue, T.
	Suga, M.
	Takashima, A.
	Suzuki, T.
	Fukuchi, T.
	Hirayama, Y.
	Imai, N.
	Miyatake, H.
	Pearson, M.
	Levy, C. D. P.
	Jackson, K. P.
citation_publisher	American Physical Society
citation_language	英語
citation_date	2012-03-13
citation_journal_title	Physical Review C
citation_volume	85
citation_issue	3
citation_firstpage	034310
citation_issn	05562813
citation_doi	info:doi/10.1103/PhysRevC.85.034310
citation_public_url	http://hdl.handle.net/11094/23123

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