βdecay of the 21/2^+ isomer in ^<93>Mo and level structure of ^<93>Nb

Hori, T.; Masue, T.; Odahara, A.; Kura, K.; Tajiri, K.; Shimoda, T.; Fukuchi, T.; Suzuki, T.; Wakabayashi, Y.; Gono, Y.; Ogawa, K.

doi:info:doi/10.1103/PhysRevC.80.034306

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タイトル	βdecay of the 21/2^+ isomer in ^<93>Mo and level structure of ^<93>Nb
著者	Hori, T. Hori, T.
	Masue, T. Masue, T.
	Odahara, A. Odahara, A.
	Kura, K. Kura, K.
	Tajiri, K. Tajiri, K.
	Shimoda, T. Shimoda, T.
	Fukuchi, T. Fukuchi, T.
	Suzuki, T. Suzuki, T.
	Wakabayashi, Y. Wakabayashi, Y.
	Gono, Y. Gono, Y.
	Ogawa, K. Ogawa, K.
抄録	The γ rays associated with β decay of the 21/2^+ isomer in ^<93>Mo (Ex=2.425 MeV, T_<1/2>=6.85 h) were measured with a selective sensitivity to long-lived isomer decays. A new 1262-keV transition was found in the γ-γ coincidence measurement, and it was attributed to a transition in ^<93>Nb, which is the daughter nucleus of the β decay of the ^<93>Mo isomer, from the 2.753- to the 1.491-MeV levels. Accurate γ-ray intensity balances have determined the β-decay intensity from the ^<93>Mo isomer to the 2.753-MeV level in ^<93>Nb and placed no appreciable intensity for the previously reported β-decay branching to the 2.180-MeV level, for which a recent in-beam γ-ray experiment assigned to be I^π = 17/2^-. Based on the γ-ray intensities from the 2.753-MeV level, spin-parity assignment of this level was revised from 21/2^+ to 19/2^+. The observed β-decay intensity and the spin-parity assignment were explained by the jj-coupling shell model calculations.
公開者	American Physical Society
掲載誌名	Physical Review C
巻	80
号	3
開始ページ	034306
刊行年月	2009-09-09
ISSN	05562813
NCID	AA00773613
DOI	info:doi/10.1103/PhysRevC.80.034306
URL	http://hdl.handle.net/11094/23125
関連情報 (references)	http://prc.aps.org/abstract/PRC/v80/i3/e034306
権利情報	Hori, T. , Masue, T. , Odahara, A. , Kura, K. , Tajiri, K. , Shimoda, T. , Fukuchi, T. , Suzuki, T. , Wakabayashi, Y. , Gono, Y. , Ogawa, K., Physical Review C, 80, 034306, 2009 "Copyright (2009) by the American Physical Society."
言語	英語

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.80(3) P.034306
DC.title	βdecay of the 21/2^+ isomer in ^<93>Mo and level structure of ^<93>Nb
DC.creator	Hori, T.
	Masue, T.
	Odahara, A.
	Kura, K.
	Tajiri, K.
	Shimoda, T.
	Fukuchi, T.
	Suzuki, T.
	Wakabayashi, Y.
	Gono, Y.
	Ogawa, K.
DC.publisher	American Physical Society
DC.language" scheme="DCTERMS.RFC1766	英語
DCTERMS.issued" scheme="DCTERMS.W3CDTF	2009-09-09
DC.identifier	info:doi/10.1103/PhysRevC.80.034306
DC.identifier" scheme="DCTERMS.URI	http://hdl.handle.net/11094/23125
DCTERMS.abstract	The γ rays associated with β decay of the 21/2^+ isomer in ^<93>Mo (Ex=2.425 MeV, T_<1/2>=6.85 h) were measured with a selective sensitivity to long-lived isomer decays. A new 1262-keV transition was found in the γ-γ coincidence measurement, and it was attributed to a transition in ^<93>Nb, which is the daughter nucleus of the β decay of the ^<93>Mo isomer, from the 2.753- to the 1.491-MeV levels. Accurate γ-ray intensity balances have determined the β-decay intensity from the ^<93>Mo isomer to the 2.753-MeV level in ^<93>Nb and placed no appreciable intensity for the previously reported β-decay branching to the 2.180-MeV level, for which a recent in-beam γ-ray experiment assigned to be I^π = 17/2^-. Based on the γ-ray intensities from the 2.753-MeV level, spin-parity assignment of this level was revised from 21/2^+ to 19/2^+. The observed β-decay intensity and the spin-parity assignment were explained by the jj-coupling shell model calculations.
DC.rights	Hori, T. , Masue, T. , Odahara, A. , Kura, K. , Tajiri, K. , Shimoda, T. , Fukuchi, T. , Suzuki, T. , Wakabayashi, Y. , Gono, Y. , Ogawa, K., Physical Review C, 80, 034306, 2009 "Copyright (2009) by the American Physical Society."
citation_title	βdecay of the 21/2^+ isomer in ^<93>Mo and level structure of ^<93>Nb
citation_author	Hori, T.
	Masue, T.
	Odahara, A.
	Kura, K.
	Tajiri, K.
	Shimoda, T.
	Fukuchi, T.
	Suzuki, T.
	Wakabayashi, Y.
	Gono, Y.
	Ogawa, K.
citation_publisher	American Physical Society
citation_language	英語
citation_date	2009-09-09
citation_journal_title	Physical Review C
citation_volume	80
citation_issue	3
citation_firstpage	034306
citation_issn	05562813
citation_doi	info:doi/10.1103/PhysRevC.80.034306
citation_public_url	http://hdl.handle.net/11094/23125

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