Lithium Isotope Separation by Radio-Frequency Plaugging

Isotope separation br radio frequency field has been inversigated. (1) A lithium plasma of 10^9cm in density is produced by surface ionization on a 1700 C tungsten plate. a radio-frequencyfield of lithium ion cyclotron频率range is applied on a pair of parallel plates whichsandwiches the plasma. the abundance ratio of lithium isotopes,^ 0li to^ 7li in the plasma detecteda 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 3cm).(2) for the application of rfplugging isotope separation to high density plasmaeigenmode of effield should be excited to get high rf field in the plasma. the eigenmode idexcited and investigated in a hydorgen sheet plasma on rfc - x - m device.(3) a possibility that the possibilityponderomotive magnetic field可以使用isotope speparation id shown thgoretically. Acomuter 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。

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.