[《日本原子能快报》1986年12月11日第9页报道]日本理化学研究所在1986年11月25日召开的激光科学专题讨论会上宣布,在原料中加入甲烷,可使激光分离铀的效率提高。其过程是在UF_6气体中混入甲烷、乙烷、氢气,并将它们冷却35℃,通过特定激光束照射,~(235)UF_6解离为~(235)UF_5和F_2气,回收固态的~(235)UF_5而取得浓缩铀, [Japan Atomic Energy Letters, December 11, 1986, p. 9.] The Japan Institute of Chemistry and Chemistry announced at the Laser Science Symposium on November 25, 1986 that the addition of methane to raw materials will enable laser separation of uranium to raise efficiency. The process is to mix methane, ethane and hydrogen into UF_6 gas and cool them to 35 ° C. After the specific laser beam is irradiated, 235 UF_6 is dissociated to 235 UF_5 and F_2 gas, 235) UF_5 to obtain enriched uranium,