Production of256Lr in the249,250,251, Cf + 11B, 243Am + 18O, and 248Cm + 14N reactions

N. Sato, T. K. Sato, M. Asai, A. Toyoshima, K. Tsukada, Z. J. Li, K. Nishio, Y. Nagame, M. Schädel, H. Haba, S. Ichikawa, H. Kikunaga

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Abstract

Production cross-sections of the isotope 256 Lr in the 249,250,251Cf +11B, 243Am+18O, and 248Cm+14N reactions were measured using a He/KCl gas-jet transport system and a rotating wheel α-particle detection apparatus. The α-particle energy of 256 Lr was distributed from 8.3 to 8.7MeVand its half-life, 1/2,was measured to be 28±1 s. The maximum cross sections in the 249 Cf (11 B, 4n)256 Lr and 243Am(18O, 5n)256Lr reactions were determined to be 122 ± 36 nb at the beam energy of 63MeV and 26 ± 7 nb at 96MeV, respectively. In the 248Cm(14N, 6n)256Lr reaction, the cross section was measured to be 27 ± 10 nb at 91MeV.

Original languageEnglish
Pages (from-to)211-219
Number of pages9
JournalRadiochimica Acta
Volume102
Issue number3
DOIs
Publication statusPublished - Mar 2014

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry

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    Sato, N., Sato, T. K., Asai, M., Toyoshima, A., Tsukada, K., Li, Z. J., Nishio, K., Nagame, Y., Schädel, M., Haba, H., Ichikawa, S., & Kikunaga, H. (2014). Production of256Lr in the249,250,251, Cf + 11B, 243Am + 18O, and 248Cm + 14N reactions. Radiochimica Acta, 102(3), 211-219. https://doi.org/10.1515/ract-2014-2142