First beta-decay studies of the neutron-rich isotopes Sc53-55 and V56-59

O. Sorlin; V. Borrel; S. Grevy; D. Guillemaud-Mueller; A.C. Mueller; F. Pougheon; W. Bohmer; K.L. Kratz; T. Mehren; P. Moller; B. Pfeiffer; T. Rauscher; M.G. Saint-Laurent; R. Anne; M. Lewitowicz; A. Ostrowski; T. Dorfler; W.D. Schmidt-Ott

First beta-decay studies of the neutron-rich isotopes Sc53-55 and V56-59

O. Sorlin, V. Borrel, S. Grevy, D. Guillemaud-Mueller, A.C. Mueller, F. Pougheon, W. Bohmer, K.L. Kratz, T. Mehren, P. Moller, B. Pfeiffer, T. Rauscher, M.G. Saint-Laurent, R. Anne, M. Lewitowicz, A. Ostrowski, T. Dorfler, W.D. Schmidt-Ott

Centre for Astrophysics Research

Research output: Contribution to journal › Article › peer-review

44 Citations (Scopus)

Abstract

The neutron-rich isotopes Sc53-55 and V56-59 have been produced at GANIL in interactions of a 64.5 MeV/u Cu-65 beam with a Be-9 target. They were separated by the doubly achromatic spectrometer LISE3. Beta-decay half-lives and subsequent low-energy gamma-rays were observed for the first time. The present results are compared to QRPA model predictions. The quick drop of the half-life observed at N = 33 for Ca-53(20)33 is water V-56(23)33 and absent for Sc-54(21)33, indicating a vanishing of the N = 32 subshell north to Ca-52(32). In an astrophysical context, these neutron-rich isotopes represent r-process progenitors which, after beta-decay, would produce the correlated isotopic over-abundances of Cr-54, Fe-58, Ni-64 in certain refractory inclusions of meteorites. (C) 1998 Elsevier Science B.V.

Original language	English
Pages (from-to)	205-228
Number of pages	24
Journal	Nuclear Physics A
Volume	632
Issue number	2
Publication status	Published - 16 Mar 1998

Keywords

V-56,V-57.58.59(beta(-)) [from Be-9 ((CU)-C-65, X), E=64.5 MeV/nucleon] measured E gamma, I gamma,beta gamma-coin, T-1/2
educed r-process implications
R-PROCESS
Sc-53.54.55
NUCLEOSYNTHESIS
ALLENDE METEORITE
SPECTROMETER
BEAM
CA-48/CA-46 ABUNDANCE RATIO
ANOMALIES
STABILITY
REGION
ALPHA-PROCESS

Cite this

Sorlin, O., Borrel, V., Grevy, S., Guillemaud-Mueller, D., Mueller, A. C., Pougheon, F., Bohmer, W., Kratz, K. L., Mehren, T., Moller, P., Pfeiffer, B., Rauscher, T., Saint-Laurent, M. G., Anne, R., Lewitowicz, M., Ostrowski, A., Dorfler, T., & Schmidt-Ott, W. D. (1998). First beta-decay studies of the neutron-rich isotopes Sc53-55 and V56-59. Nuclear Physics A, 632(2), 205-228.

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title = "First beta-decay studies of the neutron-rich isotopes Sc53-55 and V56-59",

abstract = "The neutron-rich isotopes Sc53-55 and V56-59 have been produced at GANIL in interactions of a 64.5 MeV/u Cu-65 beam with a Be-9 target. They were separated by the doubly achromatic spectrometer LISE3. Beta-decay half-lives and subsequent low-energy gamma-rays were observed for the first time. The present results are compared to QRPA model predictions. The quick drop of the half-life observed at N = 33 for Ca-53(20)33 is water V-56(23)33 and absent for Sc-54(21)33, indicating a vanishing of the N = 32 subshell north to Ca-52(32). In an astrophysical context, these neutron-rich isotopes represent r-process progenitors which, after beta-decay, would produce the correlated isotopic over-abundances of Cr-54, Fe-58, Ni-64 in certain refractory inclusions of meteorites. (C) 1998 Elsevier Science B.V.",

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author = "O. Sorlin and V. Borrel and S. Grevy and D. Guillemaud-Mueller and A.C. Mueller and F. Pougheon and W. Bohmer and K.L. Kratz and T. Mehren and P. Moller and B. Pfeiffer and T. Rauscher and M.G. Saint-Laurent and R. Anne and M. Lewitowicz and A. Ostrowski and T. Dorfler and W.D. Schmidt-Ott",

year = "1998",

month = mar,

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pages = "205--228",

journal = "Nuclear Physics A",

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TY - JOUR

T1 - First beta-decay studies of the neutron-rich isotopes Sc53-55 and V56-59

AU - Sorlin, O.

AU - Borrel, V.

AU - Grevy, S.

AU - Guillemaud-Mueller, D.

AU - Mueller, A.C.

AU - Pougheon, F.

AU - Bohmer, W.

AU - Kratz, K.L.

AU - Mehren, T.

AU - Moller, P.

AU - Pfeiffer, B.

AU - Rauscher, T.

AU - Saint-Laurent, M.G.

AU - Anne, R.

AU - Lewitowicz, M.

AU - Ostrowski, A.

AU - Dorfler, T.

AU - Schmidt-Ott, W.D.

PY - 1998/3/16

Y1 - 1998/3/16

N2 - The neutron-rich isotopes Sc53-55 and V56-59 have been produced at GANIL in interactions of a 64.5 MeV/u Cu-65 beam with a Be-9 target. They were separated by the doubly achromatic spectrometer LISE3. Beta-decay half-lives and subsequent low-energy gamma-rays were observed for the first time. The present results are compared to QRPA model predictions. The quick drop of the half-life observed at N = 33 for Ca-53(20)33 is water V-56(23)33 and absent for Sc-54(21)33, indicating a vanishing of the N = 32 subshell north to Ca-52(32). In an astrophysical context, these neutron-rich isotopes represent r-process progenitors which, after beta-decay, would produce the correlated isotopic over-abundances of Cr-54, Fe-58, Ni-64 in certain refractory inclusions of meteorites. (C) 1998 Elsevier Science B.V.

AB - The neutron-rich isotopes Sc53-55 and V56-59 have been produced at GANIL in interactions of a 64.5 MeV/u Cu-65 beam with a Be-9 target. They were separated by the doubly achromatic spectrometer LISE3. Beta-decay half-lives and subsequent low-energy gamma-rays were observed for the first time. The present results are compared to QRPA model predictions. The quick drop of the half-life observed at N = 33 for Ca-53(20)33 is water V-56(23)33 and absent for Sc-54(21)33, indicating a vanishing of the N = 32 subshell north to Ca-52(32). In an astrophysical context, these neutron-rich isotopes represent r-process progenitors which, after beta-decay, would produce the correlated isotopic over-abundances of Cr-54, Fe-58, Ni-64 in certain refractory inclusions of meteorites. (C) 1998 Elsevier Science B.V.

KW - V-56,V-57.58.59(beta(-)) [from Be-9 ((CU)-C-65, X), E=64.5 MeV/nucleon] measured E gamma, I gamma,beta gamma-coin, T-1/2

KW - educed r-process implications

KW - R-PROCESS

KW - Sc-53.54.55

KW - NUCLEOSYNTHESIS

KW - ALLENDE METEORITE

KW - SPECTROMETER

KW - BEAM

KW - CA-48/CA-46 ABUNDANCE RATIO

KW - ANOMALIES

KW - STABILITY

KW - REGION

KW - ALPHA-PROCESS

M3 - Article

SN - 0375-9474

VL - 632

SP - 205

EP - 228

JO - Nuclear Physics A

JF - Nuclear Physics A

IS - 2

ER -

First beta-decay studies of the neutron-rich isotopes Sc53-55 and V56-59

Abstract

Keywords

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