\ensuremath{\alpha} decay of $^{238}\mathrm{Cm}$ and the new isotope $^{237}\mathrm{Cm}$

α decay of ${}^{238}{Cm}$ and the new isotope ${}^{237}{Cm}$

M. Asai, K. Tsukada, S. Ichikawa, M. Sakama, H. Haba, I. Nishinaka, Y. Nagame, S. Goto, Y. Kojima, Y. Oura, and M. Shibata

Phys. Rev. C 73, 067301 – Published 20 June 2006

Abstract

Alpha decays of ${}^{237}{Cm}$ and ${}^{238}{Cm}$ have been studied using a gas-jet coupled on-line isotope separator. The new isotope ${}^{237}{Cm}$ has been identified through the detection of $6656 \pm 10$ keV α particles. The α energy of ${}^{238}{Cm}$ has been revised more precisely than the previous one. The α transition to the first excited $2^{+}$ state in ${}^{234}{Pu}$ has also been observed. It was found that the $2^{+}$ energy in ${}^{234}{Pu}$ is much higher than those in heavier Pu isotopes.

Received 6 March 2006

DOI:https://doi.org/10.1103/PhysRevC.73.067301

Authors & Affiliations

M. Asai^1,*, K. Tsukada¹, S. Ichikawa¹, M. Sakama², H. Haba³, I. Nishinaka¹, Y. Nagame¹, S. Goto⁴, Y. Kojima⁵, Y. Oura⁶, and M. Shibata⁷

¹Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
²Department of Radiologic Science and Engineering, The University of Tokushima, Tokushima 770-8509, Japan
³Nishina Center for Accelerator Based Science, RIKEN, Wako, Saitama 351-0198, Japan
⁴Department of Chemistry, Niigata University, Niigata 950-2181, Japan
⁵Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
⁶Department of Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
⁷Radioisotope Research Center, Nagoya University, Nagoya 464-8602, Japan

^*Electronic address: asai.masato@jaea.go.jp

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Vol. 73, Iss. 6 — June 2006

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Physical Review C

covering nuclear physics

α decay of ${}^{238}{Cm}$ and the new isotope ${}^{237}{Cm}$

M. Asai, K. Tsukada, S. Ichikawa, M. Sakama, H. Haba, I. Nishinaka, Y. Nagame, S. Goto, Y. Kojima, Y. Oura, and M. Shibata

Phys. Rev. C 73, 067301 – Published 20 June 2006

Abstract

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Physical Review C

covering nuclear physics

α decay of Cm238 and the new isotope Cm237

M. Asai, K. Tsukada, S. Ichikawa, M. Sakama, H. Haba, I. Nishinaka, Y. Nagame, S. Goto, Y. Kojima, Y. Oura, and M. Shibata

Phys. Rev. C 73, 067301 – Published 20 June 2006

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α decay of ${}^{238}{Cm}$ and the new isotope ${}^{237}{Cm}$