Low-energy structure of $^{61}\mathrm{Mn}$ populated following $\ensuremath{\beta}$ decay of $^{61}\mathrm{Cr}$

Low-energy structure of ${}^{61}{Mn}$ populated following $β$ decay of ${}^{61}{Cr}$

H. L. Crawford, P. F. Mantica, J. S. Berryman, R. Broda, B. Fornal, C. R. Hoffman, N. Hoteling, R. V. F. Janssens, S. M. Lenzi, J. Pereira, J. B. Stoker, S. L. Tabor, W. B. Walters, X. Wang, and S. Zhu

Phys. Rev. C 79, 054320 – Published 15 May 2009

Abstract

$β$ decay of the ${}^{61}{Cr}_{37}$ ground state has been studied. A new half-life of $233 \pm 11$ ms has been deduced, and seven delayed $γ$ rays have been assigned to the daughter ${}^{61}{Mn}_{36}$ . The low-energy level structure of ${}^{61}{Mn}_{36}$ is similar to that of the less neutron-rich ${}^{57, 59}{Mn}$ nuclei. The odd- $A_{25}$ Mn isotopes follow the systematic trend in the yrast states of the even-even, $Z + 1$ $_{26}$ Fe isotopes, and not that of the $Z - 1$ $_{24}$ Cr isotopes, where a possible onset of collectivity has been suggested to occur already at $N = 36$ .

Received 16 March 2009

DOI:https://doi.org/10.1103/PhysRevC.79.054320

Authors & Affiliations

H. L. Crawford^1,2, P. F. Mantica^1,2, J. S. Berryman^1,2, R. Broda³, B. Fornal³, C. R. Hoffman⁴, N. Hoteling^5,6, R. V. F. Janssens⁵, S. M. Lenzi^7,8, J. Pereira^2,9, J. B. Stoker^1,2, S. L. Tabor⁴, W. B. Walters⁶, X. Wang^5,10, and S. Zhu⁵

¹Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
²National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
³Institute of Nuclear Physics, Polish Academy of Sciences, Cracow PL-31342, Poland
⁴Department of Physics and Astronomy, Florida State University, Tallahassee, Florida 32306, USA
⁵Physics Division, Argonne National Laboratory, Argonne, Illinois 60429, USA
⁶Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA
⁷Department of Physics, Padova University, I-35131 Padova, Italy
⁸National Institute of Nuclear Physics, Padova Section, I-35131 Padova, Italy
⁹Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, Michigan 48824, USA
¹⁰Department of Physics, University of Notre Dame, South Bend, Indiana 46556, USA

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Vol. 79, Iss. 5 — May 2009

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Physical Review C

covering nuclear physics

Low-energy structure of ${}^{61}{Mn}$ populated following $β$ decay of ${}^{61}{Cr}$

H. L. Crawford, P. F. Mantica, J. S. Berryman, R. Broda, B. Fornal, C. R. Hoffman, N. Hoteling, R. V. F. Janssens, S. M. Lenzi, J. Pereira, J. B. Stoker, S. L. Tabor, W. B. Walters, X. Wang, and S. Zhu

Phys. Rev. C 79, 054320 – Published 15 May 2009

Abstract

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Physical Review C

covering nuclear physics

Low-energy structure of Mn61 populated following β decay of Cr61

H. L. Crawford, P. F. Mantica, J. S. Berryman, R. Broda, B. Fornal, C. R. Hoffman, N. Hoteling, R. V. F. Janssens, S. M. Lenzi, J. Pereira, J. B. Stoker, S. L. Tabor, W. B. Walters, X. Wang, and S. Zhu

Phys. Rev. C 79, 054320 – Published 15 May 2009

Abstract

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Low-energy structure of ${}^{61}{Mn}$ populated following $β$ decay of ${}^{61}{Cr}$