Fine structure in a alpha decay of 188, 192Po
Van de Vel, K., Andreyev, A. N., Ackermann, D., Boardman, H. J., Cagarda, P., Gerl, J., Heßberger, F. P., Hofmann, S., Huyse, M., Karlgren, D., Kojouharov, I., Leino, M., Lommel, B., Münzenberg, G., Moore, C., Page, R. D., Saro, S., Van Duppen, P., & Wyss, R. (2003). Fine structure in a alpha decay of 188, 192Po. Physical Review C : Nuclear Physics, 68(5), Article 054311. https://doi.org/10.1103/PhysRevC.68.054311
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Physical Review C : Nuclear PhysicsDate
2003Copyright
© 2003 The American Physical Society
The α decay of 188,192Po has been reexamined in order to probe the 0+ states in the daughter nuclei 184,188Pb that can be associated with coexisting spherical, oblate, and∕or prolate configurations. Improved values were measured for the excitation energy and the feeding α-decay intensity of the 0+2state in 184,188Pb and conflicting results on the 0+3 state in 188Pb were clarified. All known cases of fine structure in the α decay of the even-even Po nuclei are reviewed. The reduced α-decay width systematics combined with potential-energy-surface calculations confirm the onset of deformation in the ground state of the polonium nuclei around the neutron midshell. An isomeric state with a half-life of 580(100)ns has been identified in 192Po.
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0556-2813Keywords
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