In-beam γ-ray spectroscopy of ^<34,36,38>Mg : Merging the N=20 and N=28 shell quenching

Doornenbal, P.; Scheit, H.; Takeuchi, S.; Aoi, N.; Li, K.; Matsushita, M.; Steppenbeck, D.; Wang, H.; Baba, H.; Crawford, H.; Hoffman, C.R.; Hughes, R.; Ideguchi, E.; Kobayashi, N.; Kondo, Y.; Lee, J.; Michimasa, S.; Motobayashi, T.; Sakurai, H.; Takechi, M.; Togano, Y.; Winkler, R.; Yoneda, K.

doi:https://doi.org/10.1103/PhysRevLett.111.212502

In-beam γ-ray spectroscopy of ^<34,36,38>Mg : Merging the N=20 and N=28 shell quenching

Doornenbal, P.; Scheit, H.; Takeuchi, S. et al.

Physical Review Letters, 2013, 111(21), 212502-212502

Number of Access:3,053（2025-10-24 12:16 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/51206

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Title	In-beam γ-ray spectroscopy of ^<34,36,38>Mg : Merging the N=20 and N=28 shell quenching
Creator	CreatorName Doornenbal, P.
	CreatorName Scheit, H.
	CreatorName Takeuchi, S.
	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 Li, K.
	CreatorName Matsushita, M.
	CreatorName Steppenbeck, D.
	CreatorName Wang, H.
	CreatorName Baba, H.
	CreatorName Crawford, H.
	CreatorName Hoffman, C.R.
	CreatorName Hughes, R.
	CreatorName Ideguchi, E.
	CreatorName Kobayashi, N.
	CreatorName Kondo, Y.
	CreatorName Lee, J.
	CreatorName Michimasa, S.
	CreatorName Motobayashi, T.
	NRID 1000090196428 1000090196428 CreatorName Sakurai, H.
	CreatorName Takechi, M.
	CreatorName Togano, Y.
	CreatorName Winkler, R.
	CreatorName Yoneda, K.
Abstract	Neutron-rich N=22 , 24, 26 magnesium isotopes were studied via in-beam γ -ray spectroscopy at the RIKEN Radioactive Isotope Beam Factory following secondary fragmentation reactions on a carbon target at ≈200 MeV/nucleon . In the one- and two-proton removal channels from ^<39>Al and ^<40>Si beams, two distinct γ-ray transitions were observed in ^<38>Mg, while in the one-proton removal reaction from ^<37>Al a new transition was observed in addition to the known 2^<+>_<1>→0^<+>_<g.s.> decay. From the experimental systematics and comparison to theoretical predictions it is concluded that the transitions belong to the 2^<+>_<1>→0^<+>_<g.s.> and 4^<+>_<1>→2^<+>_<1> decays in ^<36>Mg and ^<38>Mg, respectively. For ^<34,36,38>Mg, previously reported 2^<+>_<1> and 4^<+>_<1> level energies were remeasured. The deduced E(4^<+>_<1>)/E(2^<+>_<1>) ratios for ^<34,36,38>Mg of 3.14(5), 3.07(5), and 3.07(5) are almost identical and suggest the emergence of a large area of deformation extending from the N=20 to the N=28 shell quenching.
Publisher	American Institute of Physics
Source Title	Physical Review Letters
Volume (Issue)	111(21)
Page	212502-212502
Date of Issued	2013-11-19
Language	English
Handle URL	https://hdl.handle.net/11094/51206
PISSN	00319007
NCID	AA00773679
Relation.isIdenticalTo	DOI (Publisher Version) https://doi.org/10.1103/PhysRevLett.111.212502
Access Rights	open access
CopyRight	© 2013 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 Letters. 2013, 111(21), p. 212502-212502
DC.title	In-beam γ-ray spectroscopy of ^<34,36,38>Mg : Merging the N=20 and N=28 shell quenching
DC.creator	Doornenbal, P.
	Scheit, H.
	Takeuchi, S.
	Aoi, N.
	Li, K.
	Matsushita, M.
	Steppenbeck, D.
	Wang, H.
	Baba, H.
	Crawford, H.
	Hoffman, C.R.
	Hughes, R.
	Ideguchi, E.
	Kobayashi, N.
	Kondo, Y.
	Lee, J.
	Michimasa, S.
	Motobayashi, T.
	Sakurai, H.
	Takechi, M.
	Togano, Y.
	Winkler, R.
	Yoneda, K.
DC.publisher	American Institute of Physics
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2013-11-19
DC.identifier	https://doi.org/10.1103/PhysRevLett.111.212502
DCTERMS.abstract	Neutron-rich N=22 , 24, 26 magnesium isotopes were studied via in-beam γ -ray spectroscopy at the RIKEN Radioactive Isotope Beam Factory following secondary fragmentation reactions on a carbon target at ≈200 MeV/nucleon . In the one- and two-proton removal channels from ^<39>Al and ^<40>Si beams, two distinct γ-ray transitions were observed in ^<38>Mg, while in the one-proton removal reaction from ^<37>Al a new transition was observed in addition to the known 2^<+>_<1>→0^<+>_<g.s.> decay. From the experimental systematics and comparison to theoretical predictions it is concluded that the transitions belong to the 2^<+>_<1>→0^<+>_<g.s.> and 4^<+>_<1>→2^<+>_<1> decays in ^<36>Mg and ^<38>Mg, respectively. For ^<34,36,38>Mg, previously reported 2^<+>_<1> and 4^<+>_<1> level energies were remeasured. The deduced E(4^<+>_<1>)/E(2^<+>_<1>) ratios for ^<34,36,38>Mg of 3.14(5), 3.07(5), and 3.07(5) are almost identical and suggest the emergence of a large area of deformation extending from the N=20 to the N=28 shell quenching.
DC.rights	© 2013 American Physical Society
DC.format	51206
citation_title	In-beam γ-ray spectroscopy of ^<34,36,38>Mg : Merging the N=20 and N=28 shell quenching
citation_author	Doornenbal, P.
	Scheit, H.
	Takeuchi, S.
	Aoi, N.
	Li, K.
	Matsushita, M.
	Steppenbeck, D.
	Wang, H.
	Baba, H.
	Crawford, H.
	Hoffman, C.R.
	Hughes, R.
	Ideguchi, E.
	Kobayashi, N.
	Kondo, Y.
	Lee, J.
	Michimasa, S.
	Motobayashi, T.
	Sakurai, H.
	Takechi, M.
	Togano, Y.
	Winkler, R.
	Yoneda, K.
citation_publisher	American Institute of Physics
citation_language	English
citation_date	2013-11-19
citation_journal_title	Physical Review Letters
citation_volume	111
citation_issue	21
citation_firstpage	212502
citation_lastpage	212502
citation_doi	https://doi.org/10.1103/PhysRevLett.111.212502
citation_public_url	https://hdl.handle.net/11094/51206

In-beam γ-ray spectroscopy of ^<34,36,38>Mg : Merging the N=20 and N=28 shell quenching

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