β decay of neutron-rich Ca53-56

P. F. Mantica; R. Broda; H. L. Crawford; A. Damaske; B. Fornal; A. A. Hecht; C. Hoffman; M. Horoi; N. Hoteling; R. V.F. Janssens; J. Pereira; J. S. Pinter; J. B. Stoker; S. L. Tabor; T. Sumikama; W. B. Walters; X. Wang; S. Zhu

doi:10.1103/PhysRevC.77.014313

β decay of neutron-rich Ca53-56

P. F. Mantica, R. Broda, H. L. Crawford, A. Damaske, B. Fornal, A. A. Hecht, C. Hoffman, M. Horoi, N. Hoteling, R. V.F. Janssens, J. Pereira, J. S. Pinter, J. B. Stoker, S. L. Tabor, T. Sumikama, W. B. Walters, X. Wang, S. Zhu

Physics

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23 Scopus citations

Abstract

β-decay properties of neutron-rich Ca isotopes have been obtained. Half-life values were determined for the first time for Ca54 (86±7 ms), Ca55 (22±2 ms), and Ca56 (11±2 ms). The half-life of 230±60 ms deduced for Ca53 is significantly longer than reported previously, where the decay chain K53 → Ca53 → Sc53 was considered. A delayed γ ray with an energy of 247 keV was identified following β decay of Ca54 and is proposed to depopulate the 11+ level in Sc54. The β-decay properties compare favorably with the results of shell-model calculations completed in the full pf space with the GXPF1 interaction. The half-lives of the neutron-rich Ca isotopes are also compared with gross β-decay theory. The systematic trend of the neutron-rich Ca half-lives is consistent with the presence of a subshell gap at N=32.

Original language	English
Article number	014313
Journal	Physical Review C - Nuclear Physics
Volume	77
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.77.014313
State	Published - Jan 22 2008

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Mantica, P. F., Broda, R., Crawford, H. L., Damaske, A., Fornal, B., Hecht, A. A., Hoffman, C., Horoi, M., Hoteling, N., Janssens, R. V. F., Pereira, J., Pinter, J. S., Stoker, J. B., Tabor, S. L., Sumikama, T., Walters, W. B., Wang, X., & Zhu, S. (2008). β decay of neutron-rich Ca53-56. Physical Review C - Nuclear Physics, 77(1), [014313]. https://doi.org/10.1103/PhysRevC.77.014313

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title = "β decay of neutron-rich Ca53-56",

abstract = "β-decay properties of neutron-rich Ca isotopes have been obtained. Half-life values were determined for the first time for Ca54 (86±7 ms), Ca55 (22±2 ms), and Ca56 (11±2 ms). The half-life of 230±60 ms deduced for Ca53 is significantly longer than reported previously, where the decay chain K53 → Ca53 → Sc53 was considered. A delayed γ ray with an energy of 247 keV was identified following β decay of Ca54 and is proposed to depopulate the 11+ level in Sc54. The β-decay properties compare favorably with the results of shell-model calculations completed in the full pf space with the GXPF1 interaction. The half-lives of the neutron-rich Ca isotopes are also compared with gross β-decay theory. The systematic trend of the neutron-rich Ca half-lives is consistent with the presence of a subshell gap at N=32.",

author = "Mantica, {P. F.} and R. Broda and Crawford, {H. L.} and A. Damaske and B. Fornal and Hecht, {A. A.} and C. Hoffman and M. Horoi and N. Hoteling and Janssens, {R. V.F.} and J. Pereira and Pinter, {J. S.} and Stoker, {J. B.} and Tabor, {S. L.} and T. Sumikama and Walters, {W. B.} and X. Wang and S. Zhu",

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doi = "10.1103/PhysRevC.77.014313",

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T1 - β decay of neutron-rich Ca53-56

AU - Mantica, P. F.

AU - Broda, R.

AU - Crawford, H. L.

AU - Damaske, A.

AU - Fornal, B.

AU - Hecht, A. A.

AU - Hoffman, C.

AU - Horoi, M.

AU - Hoteling, N.

AU - Janssens, R. V.F.

AU - Pereira, J.

AU - Pinter, J. S.

AU - Stoker, J. B.

AU - Tabor, S. L.

AU - Sumikama, T.

AU - Walters, W. B.

AU - Wang, X.

AU - Zhu, S.

PY - 2008/1/22

Y1 - 2008/1/22

N2 - β-decay properties of neutron-rich Ca isotopes have been obtained. Half-life values were determined for the first time for Ca54 (86±7 ms), Ca55 (22±2 ms), and Ca56 (11±2 ms). The half-life of 230±60 ms deduced for Ca53 is significantly longer than reported previously, where the decay chain K53 → Ca53 → Sc53 was considered. A delayed γ ray with an energy of 247 keV was identified following β decay of Ca54 and is proposed to depopulate the 11+ level in Sc54. The β-decay properties compare favorably with the results of shell-model calculations completed in the full pf space with the GXPF1 interaction. The half-lives of the neutron-rich Ca isotopes are also compared with gross β-decay theory. The systematic trend of the neutron-rich Ca half-lives is consistent with the presence of a subshell gap at N=32.

AB - β-decay properties of neutron-rich Ca isotopes have been obtained. Half-life values were determined for the first time for Ca54 (86±7 ms), Ca55 (22±2 ms), and Ca56 (11±2 ms). The half-life of 230±60 ms deduced for Ca53 is significantly longer than reported previously, where the decay chain K53 → Ca53 → Sc53 was considered. A delayed γ ray with an energy of 247 keV was identified following β decay of Ca54 and is proposed to depopulate the 11+ level in Sc54. The β-decay properties compare favorably with the results of shell-model calculations completed in the full pf space with the GXPF1 interaction. The half-lives of the neutron-rich Ca isotopes are also compared with gross β-decay theory. The systematic trend of the neutron-rich Ca half-lives is consistent with the presence of a subshell gap at N=32.

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DO - 10.1103/PhysRevC.77.014313

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VL - 77

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

SN - 0556-2813

IS - 1

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ER -

β decay of neutron-rich Ca53-56

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