Production of 256Lr in the 249,250,251Cf + 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

doi:10.1515/ract-2014-2142

Published by De Gruyter (O) February 17, 2014

Production of ²⁵⁶Lr in the ^249,250,251Cf + 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 and H. Kikunaga

From the journal Radiochimica Acta

https://doi.org/10.1515/ract-2014-2142

Showing a limited preview of this publication:

Abstract

Production cross-sections of the isotope ²⁵⁶Lr 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 ²⁵⁶Lr was distributed from 8.3 to 8.7 MeV and its half-life, T_1/2, was measured to be 28 ± 1 s. The maximum cross sections in the ²⁴⁹Cf(¹¹B, 4n)²⁵⁶Lr and ²⁴³Am(¹⁸O, 5n)²⁵⁶Lr reactions were determined to be 122 ± 36 nb at the beam energy of 63 MeV and 26 ± 7 nb at 96 MeV, respectively. In the ²⁴⁸Cm(¹⁴N, 6n)²⁵⁶Lr reaction, the cross section was measured to be 27 ± 10 nb at 91 MeV.