Lithium Isotope Separation by Radio-Frequency Plaugging

• Project/Area Number: 60880002
• Research Category: Grant-in-Aid for Developmental Scientific Research
• Allocation Type: Single-year Grants
• Research Field: プラズマ理工学
• Research Institution: Institute of Playsics, Nagoya University
• Principal Investigator: ADATA Keizo Institute of Plasma Physics, Nagoya University, プラズマ研究所, 助教授 (30023716)
• Co-Investigator(Kenkyū-buntansha): SAKUMA Yoichi Institute of plasma physics, Nagoya University, プラズマ研究所, 助教授 (30133119) ; 羽鳥 〓承 (羽鳥 尹承) 名古屋大学, プラズマ研究所, 助教授 (80023729) ; NISHIMURA Kiyohiko Institute of Plasma Physics, Nagoya University, プラズマ研究所, 助手 (00180638) ; KUMZAWA Ryuhei Institute of Plasma Physics, Nagoya University, プラズマ研究所, 助手 (70109354) ; SATO Tetuyuki Institute of Plasma Physics, Nagoya University, プラズマ研究所, 教授 (70023702) ; HATORI Tadatusug Institute of Plasma Physics, Nagoya University
• Project Period (FY): 1985 – 1987
• Project Status: Completed (Fiscal Year 1987)
• Budget Amount: ¥10,400,000 (Direct Cost: ¥10,400,000); Fiscal Year 1987: ¥500,000 (Direct Cost: ¥500,000); Fiscal Year 1986: ¥900,000 (Direct Cost: ¥900,000); Fiscal Year 1985: ¥9,000,000 (Direct Cost: ¥9,000,000)
• Keywords: Radio-Frequence Plugging / Preferential Plugging / Isotope Separation / リシウム同位体 / 磁気ポンデロモーティブポテンシャル

Research Abstract

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.

Research Products

• [Publications] Sato,Teriyuki: Proc.11th IAEA Int.Cont.on Plasma Physics and Controlled Nuclear Fusion Research,Kyto 1986. 2. 343-351 (1987)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Adati,Keizo: 12th IAEA Int.Conf.on Plasma Physics and Controlled Nuclear Fusion Research,Nice,France Oct.1988.
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] T.Sato R.Kumazawa, S.Okamura, K.Adati, T.Aoki, H.Fujita, S.Hidekuna, T.Kawamoto, H.Masumoto. K.Nishimura, T.Hatori, K.Takayama, H.r.Garner, H.D.Price, A.M.Howald, B.J. Leikind, H.Ikezi, P.B.Parks, P.Andrews: "Radio Frebuenty Plugging and Tandem Mirror Experinets in a Cusp. Cnchored Mirror Device" Proc. 11th Iaea Int. Conf. on plasna physics and controlled nuclear Fusion Resarch, kYoto 1986. Iarea Uienna (198). 2. 343-351 (1987)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] K.Asati,R.Kumazawa, H.Fujita,T.Osa, K.Kadota, K.Takiyama, M.Hanomoto.T,Ohgo, T.Watafie,T.Aoki, J.Fujita, S.Hidekuma T.Kawamoto,H.Masumoto, K.Nishimura S.okomura, T.Sato, H.r.Graner, A.M.Howied: "porential Fornction in RF-Plugged Axisymmetric Mirroe-Cusp Device" aplied to the 12th IAEA Int. Conf. on plosma Physics and Nuclear Fusaion Reseacd. Nice, France Oct .1988.
  • Description: 「研究成果報告書概要(欧文)」より