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Lithium Isotope Separation by Radio-Frequency Plaugging

射频干扰法分离锂同位素

基本信息

批准号：
60880002
负责人：
ADATA Keizo
金额：
$ 6.66万
依托单位：
Institute of Playsics, Nagoya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research
财政年份：
1985
资助国家：
日本
起止时间：
1985 至 1987
项目状态：
已结题

项目摘要

Isotope separation br radio frequency field has been inversigated. (1) A lithium plasma of 10^9 cm^<-3> in density is produced by surface ionization on a 1700゜C tungsten plate. A radio-frequency field of lithium ion cyclotron frequency range is applied on a pair of parallel plates which sandwiches the plasma. The abundance ratio of lithium isotopes,^0 Li to^7 Li in the plasma detected by a quadrrpole type mass analyzer is increased from 7.4% (no rf field) to 10% (with rf field of 8 volts between the parallel plates the separation of which is 3 cm).(2) for the application of rf plugging isotope separation to high density plasma, an eigenmode of effield should be excited to get high rf field in the plasma. The eigenmode id excited and investigated in a hydorgen sheet plasma on RFC-XX-M device.(3) A possibility that the ponderomotive magnetic field can also ge utilized for isotope speparation id shown thgoretically. A comuter simulation has been done for the separation of ulanium^<235> U and^<238> U.* Investigators: Hatori, Rasatsugu, IPP Nagoya Univ.; Tajime, Toshiki, Univ. of Texus; Matsuda, Yoshiyuki, Lawrence Livermore National Lab.

对射频场同位素分离进行了研究。(1)密度为10^9 cm ↑ [3]的锂等离子体<-3>是在1700 μ C的钨板上通过表面电离产生的。将锂离子回旋频率范围的射频场施加在夹着等离子体的一对平行板上。用四极杆式质量分析器检测到的等离子体中锂同位素的丰度比，^0 Li与^7 Li的丰度比从7.4%（无射频场）增加到10%（在间隔为3 cm的平行板之间施加8伏射频场）。(2)在高密度等离子体中应用射频阻塞同位素分离技术，需要激发电场的本征模，以获得高的射频场。在RFC-XX-M装置上激发和研究了氢片等离子体中的本征模。(3)从理论上论证了有质动磁场也可用于同位素分离的可能性。对铀、铀的分离进行了计算机模拟<235><238>。研究者：Hatori，Rasatsugu，IPP名古屋大学; Tajime，Toshiki，德克萨斯大学; Matsuda，Yoshiyuki，劳伦斯利弗莫尔国家实验室。