High-sensitivity study of levels in $^{30}Al$ following β decay of $^{30}Mg$

γ-ray and fast-timing spectroscopy were used to study levels in Al30 populated following the β− decay of Mg30. Five new transitions and three new levels were located in Al30. A search was made to identify the third 1+ state expected at an excitation energy of ∼2.5 MeV. Two new levels were found, at...

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Autores principales: Olaizola, B, Mach, H, Fraile, L M, Benito, J, Borge, M J G, Boutami, R, Butler, P A, Dlouhy, Z, Fynbo, H O U, Hoff, P, Hyldegaard, S, Jeppesen, H B, Jokinen, A, Jollet, C, Korgul, A, Köster, U, Kröll, Th, Kurcewicz, W, Marechal, F, Mrazek, J, Nilsson, T, Płóciennik, W A, Ruchowska, E, Schuber, R, Schwerdtfeger, W, Sewtz, M, Simpson, G S, Stanoiu, M, Tengblad, O, Thirolf, P G, Yordanov, D T
Lenguaje:eng
Publicado: 2016
Materias:
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1103/PhysRevC.94.054318
http://cds.cern.ch/record/2261133
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author Olaizola, B
Mach, H
Fraile, L M
Benito, J
Borge, M J G
Boutami, R
Butler, P A
Dlouhy, Z
Fynbo, H O U
Hoff, P
Hyldegaard, S
Jeppesen, H B
Jokinen, A
Jollet, C
Korgul, A
Köster, U
Kröll, Th
Kurcewicz, W
Marechal, F
Mrazek, J
Nilsson, T
Płóciennik, W A
Ruchowska, E
Schuber, R
Schwerdtfeger, W
Sewtz, M
Simpson, G S
Stanoiu, M
Tengblad, O
Thirolf, P G
Yordanov, D T
author_facet Olaizola, B
Mach, H
Fraile, L M
Benito, J
Borge, M J G
Boutami, R
Butler, P A
Dlouhy, Z
Fynbo, H O U
Hoff, P
Hyldegaard, S
Jeppesen, H B
Jokinen, A
Jollet, C
Korgul, A
Köster, U
Kröll, Th
Kurcewicz, W
Marechal, F
Mrazek, J
Nilsson, T
Płóciennik, W A
Ruchowska, E
Schuber, R
Schwerdtfeger, W
Sewtz, M
Simpson, G S
Stanoiu, M
Tengblad, O
Thirolf, P G
Yordanov, D T
author_sort Olaizola, B
collection CERN
description γ-ray and fast-timing spectroscopy were used to study levels in Al30 populated following the β− decay of Mg30. Five new transitions and three new levels were located in Al30. A search was made to identify the third 1+ state expected at an excitation energy of ∼2.5 MeV. Two new levels were found, at 3163.9 and 3362.5 keV, that are firm candidates for this state. Using the advanced time-delayed (ATD) βγγ(t) method we have measured the lifetime of the 243.8-keV state to be T1/2=15(4)ps, which implies that the 243.8-keV transition is mainly of M1 character. Its fast B(M1;2+→3+) value of 0.10(3) W.u. is in very good agreement with the USD shell-model prediction of 0.090 W.u. The 1801.5-keV level is the only level observed in this study that could be a candidate for the second excited 2+ state.
id oai-inspirehep.net-1499939
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2016
record_format invenio
spelling oai-inspirehep.net-14999392020-05-15T15:29:40Zdoi:10.1103/PhysRevC.94.054318http://cds.cern.ch/record/2261133engOlaizola, BMach, HFraile, L MBenito, JBorge, M J GBoutami, RButler, P ADlouhy, ZFynbo, H O UHoff, PHyldegaard, SJeppesen, H BJokinen, AJollet, CKorgul, AKöster, UKröll, ThKurcewicz, WMarechal, FMrazek, JNilsson, TPłóciennik, W ARuchowska, ESchuber, RSchwerdtfeger, WSewtz, MSimpson, G SStanoiu, MTengblad, OThirolf, P GYordanov, D THigh-sensitivity study of levels in $^{30}Al$ following β decay of $^{30}Mg$Nuclear Physics - Experimentγ-ray and fast-timing spectroscopy were used to study levels in Al30 populated following the β− decay of Mg30. Five new transitions and three new levels were located in Al30. A search was made to identify the third 1+ state expected at an excitation energy of ∼2.5 MeV. Two new levels were found, at 3163.9 and 3362.5 keV, that are firm candidates for this state. Using the advanced time-delayed (ATD) βγγ(t) method we have measured the lifetime of the 243.8-keV state to be T1/2=15(4)ps, which implies that the 243.8-keV transition is mainly of M1 character. Its fast B(M1;2+→3+) value of 0.10(3) W.u. is in very good agreement with the USD shell-model prediction of 0.090 W.u. The 1801.5-keV level is the only level observed in this study that could be a candidate for the second excited 2+ state.oai:inspirehep.net:14999392016
spellingShingle Nuclear Physics - Experiment
Olaizola, B
Mach, H
Fraile, L M
Benito, J
Borge, M J G
Boutami, R
Butler, P A
Dlouhy, Z
Fynbo, H O U
Hoff, P
Hyldegaard, S
Jeppesen, H B
Jokinen, A
Jollet, C
Korgul, A
Köster, U
Kröll, Th
Kurcewicz, W
Marechal, F
Mrazek, J
Nilsson, T
Płóciennik, W A
Ruchowska, E
Schuber, R
Schwerdtfeger, W
Sewtz, M
Simpson, G S
Stanoiu, M
Tengblad, O
Thirolf, P G
Yordanov, D T
High-sensitivity study of levels in $^{30}Al$ following β decay of $^{30}Mg$
title High-sensitivity study of levels in $^{30}Al$ following β decay of $^{30}Mg$
title_full High-sensitivity study of levels in $^{30}Al$ following β decay of $^{30}Mg$
title_fullStr High-sensitivity study of levels in $^{30}Al$ following β decay of $^{30}Mg$
title_full_unstemmed High-sensitivity study of levels in $^{30}Al$ following β decay of $^{30}Mg$
title_short High-sensitivity study of levels in $^{30}Al$ following β decay of $^{30}Mg$
title_sort high-sensitivity study of levels in $^{30}al$ following β decay of $^{30}mg$
topic Nuclear Physics - Experiment
url https://dx.doi.org/10.1103/PhysRevC.94.054318
http://cds.cern.ch/record/2261133
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