Spin-parity assignments in ^<15>C^* by a new method : β-delayed spectroscopy for a spin-polarized nucleus

Miyatake, H.; Ueno, H.; Yamamoto, Y.; Aoi, N.; Asahi, K.; Ideguchi, E.; Ishihara, M.; Izumi, H.; Kishida, T.; Kubo, T.; Mitsuoka, S.; Mizoi, Y.; Notani, M.; Ogawa, H.; Ozawa, A.; Sasaki, M.; Shimoda, T.; Shirakura, T.; Takahashi, N.; Tanimoto, S.; Yoneda, K.

doi:https://doi.org/10.1103/PhysRevC.67.014306

Spin-parity assignments in ^<15>C^* by a new method : β-delayed spectroscopy for a spin-polarized nucleus

Miyatake, H.; Ueno, H.; Yamamoto, Y. et al.

Physical Review C, 2003, 67(1), 014306

Number of Access:2,540（2025-10-24 12:16 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/23139

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Title	Spin-parity assignments in ^<15>C^* by a new method : β-delayed spectroscopy for a spin-polarized nucleus
Creator	CreatorName Miyatake, H.
	CreatorName Ueno, H.
	CreatorName Yamamoto, Y.
	NRID 1000000311647 1000000311647 ORCID 0000-0003-3303-8542 0000-0003-3303-8542 researchmap permalink aoinori aoinori Scopus Author ID 8522086100 8522086100 CreatorName Aoi, N.
	CreatorName Asahi, K.
	CreatorName Ideguchi, E.
	CreatorName Ishihara, M.
	CreatorName Izumi, H.
	CreatorName Kishida, T.
	CreatorName Kubo, T.
	CreatorName Mitsuoka, S.
	CreatorName Mizoi, Y.
	CreatorName Notani, M.
	CreatorName Ogawa, H.
	CreatorName Ozawa, A.
	NRID 1000060089737 1000060089737 CreatorName Sasaki, M.
	CreatorName Shimoda, T.
	CreatorName Shirakura, T.
	CreatorName Takahashi, N.
	CreatorName Tanimoto, S.
	CreatorName Yoneda, K.
Abstract	We propose a method of spin-parity assignments in decay spectroscopy. Its feasibility was tested for the β-delayed neutron decay of spin-polarized ^<15>B. The β-decay asymmetries were measured in coincidence with the delayed neutrons, and the AP values were evaluated for five allowed transitions leading to the excited states in ^<15>C (E_x=3.103, 4.220, 4.657, 5.866, and 6.426 MeV). The spin parities of the former three states were uniquely assigned as 1/2^-, 5/2^-, and 3/2^-, respectively. These assignments are consistent with the previous assignments. Because of insufficient statistics for the 5.866-MeV state (1/2^-), an incorrect assignment (3/2^-) could not be excluded within the 1σ deviation. The spin-parity of the 6.417-MeV state is suggested to be 1/2^-. The peak analysis with detector response in the neutron time of flight spectra enabled precise determinations of the level energies and widths. The level widths were determined for the first time. The present method is also applicable for β-delayed proton, α, and γ decays, and it can be a powerful tool for spectroscopic studies of nuclei far from the stability.
Publisher	American Physical Society
Source Title	Physical Review C
Volume (Issue)	67(1)
Page	014306
Date of Issued	2003-01-17
Language	English
Handle URL	https://hdl.handle.net/11094/23139
PISSN	05562813
NCID	AA00773613
Relation.references	URI http://prc.aps.org/abstract/PRC/v67/i1/e014306
Relation.isIdenticalTo	DOI (Publisher Version) https://doi.org/10.1103/PhysRevC.67.014306
Access Rights	open access
CopyRight	Miyatake, H. , Ueno, H. , Yamamoto, Y. , Aoi, N. , Asahi, K. , Ideguchi, E. , Ishihara, M. , Izumi, H. , Kishida, T. , Kubo, T. , Mitsuoka, S. , Mizoi, Y. , Notani, M. , Ogawa, H. , Ozawa, A. , Sasaki, M. , Shimoda, T. , Shirakura, T. , Takahashi, N. , Tanimoto, S. , Yoneda, K., Physical Review C, 67, 014306, 2003 "Copyright (2003) by the American Physical Society."
oaire:version	Version of Record
Category	学術雑誌論文 Journal Article

Resource Type	journal article
Local Type	Journal Article
DCMI Type	Text
DCTERMS.bibliographicCitation	Physical Review C. 2003, 67(1), p. 014306
DC.title	Spin-parity assignments in ^<15>C^* by a new method : β-delayed spectroscopy for a spin-polarized nucleus
DC.creator	Miyatake, H.
	Ueno, H.
	Yamamoto, Y.
	Aoi, N.
	Asahi, K.
	Ideguchi, E.
	Ishihara, M.
	Izumi, H.
	Kishida, T.
	Kubo, T.
	Mitsuoka, S.
	Mizoi, Y.
	Notani, M.
	Ogawa, H.
	Ozawa, A.
	Sasaki, M.
	Shimoda, T.
	Shirakura, T.
	Takahashi, N.
	Tanimoto, S.
	Yoneda, K.
DC.publisher	American Physical Society
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2003-01-17
DC.identifier	https://doi.org/10.1103/PhysRevC.67.014306
DC.relation' scheme='DCTERMS.URI	http://prc.aps.org/abstract/PRC/v67/i1/e014306
DCTERMS.abstract	We propose a method of spin-parity assignments in decay spectroscopy. Its feasibility was tested for the β-delayed neutron decay of spin-polarized ^<15>B. The β-decay asymmetries were measured in coincidence with the delayed neutrons, and the AP values were evaluated for five allowed transitions leading to the excited states in ^<15>C (E_x=3.103, 4.220, 4.657, 5.866, and 6.426 MeV). The spin parities of the former three states were uniquely assigned as 1/2^-, 5/2^-, and 3/2^-, respectively. These assignments are consistent with the previous assignments. Because of insufficient statistics for the 5.866-MeV state (1/2^-), an incorrect assignment (3/2^-) could not be excluded within the 1σ deviation. The spin-parity of the 6.417-MeV state is suggested to be 1/2^-. The peak analysis with detector response in the neutron time of flight spectra enabled precise determinations of the level energies and widths. The level widths were determined for the first time. The present method is also applicable for β-delayed proton, α, and γ decays, and it can be a powerful tool for spectroscopic studies of nuclei far from the stability.
DC.rights	Miyatake, H. , Ueno, H. , Yamamoto, Y. , Aoi, N. , Asahi, K. , Ideguchi, E. , Ishihara, M. , Izumi, H. , Kishida, T. , Kubo, T. , Mitsuoka, S. , Mizoi, Y. , Notani, M. , Ogawa, H. , Ozawa, A. , Sasaki, M. , Shimoda, T. , Shirakura, T. , Takahashi, N. , Tanimoto, S. , Yoneda, K., Physical Review C, 67, 014306, 2003 "Copyright (2003) by the American Physical Society."
DC.format	23139
citation_title	Spin-parity assignments in ^<15>C^* by a new method : β-delayed spectroscopy for a spin-polarized nucleus
citation_author	Miyatake, H.
	Ueno, H.
	Yamamoto, Y.
	Aoi, N.
	Asahi, K.
	Ideguchi, E.
	Ishihara, M.
	Izumi, H.
	Kishida, T.
	Kubo, T.
	Mitsuoka, S.
	Mizoi, Y.
	Notani, M.
	Ogawa, H.
	Ozawa, A.
	Sasaki, M.
	Shimoda, T.
	Shirakura, T.
	Takahashi, N.
	Tanimoto, S.
	Yoneda, K.
citation_publisher	American Physical Society
citation_language	English
citation_date	2003-01-17
citation_journal_title	Physical Review C
citation_volume	67
citation_issue	1
citation_firstpage	014306
citation_doi	https://doi.org/10.1103/PhysRevC.67.014306
citation_public_url	https://hdl.handle.net/11094/23139
citation_abstract_html_url	http://prc.aps.org/abstract/PRC/v67/i1/e014306

Spin-parity assignments in ^<15>C^* by a new method : β-delayed spectroscopy for a spin-polarized nucleus

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