Title:
【発明の名称】閉鎖電子ドリフトを持つ長さの短いプラズマ加速器
Document Type and Number:
Japanese Patent JPH08500699
Kind Code:
A
Abstract:
PCT No. PCT/FR93/00612 Sec. 371 Date Feb. 16, 1995 Sec. 102(e) Date Feb. 16, 1995 PCT Filed Jun. 21, 1993 PCT Pub. No. WO95/00758 PCT Pub. Date Jan. 5, 1995.The system (31 to 33, 34 to 38) for generating a magnetic field in the main channel of the plasma accelerator are adapted to produce, in the main channel (24) an essentially radial magnetic field at the downstream end (225) of the channel (24), its induction being maximum at this point. The magnetic field has a minimum induction in the transition area in the vicinity of the anode (25), the absolute induction value of the field increasing again upstream of the anode (25), in the region of the buffer chamber (23) in order to produce a magnetic mirror effect. The magnetic field lines include, between the anode (25) and the downstream end (225) of the channel (24), a concavity oriented downstream, causing focusing of ions, the maximum ionisation density area being located downstream of the anode (25). The magnetic field sources comprise several distinct magnetic field sources (31 to 33) and inner (35) and outer (34) radial, plane pole pieces (34, 35) disposed at the outlet face on either side of the main channel (24) and linked to one another by a central core (38), a yoke (36) and a peripheral magnetic circuit (37) axially disposed outside of the main channel (24). The yoke (36) consists of radial elements located in the immediate vicinity of the anode (25) and passing through the annular buffer chamber (23), thereby creating spaces (13) for communication between the annular buffer chamber (23) and the main channel (24).
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Inventors:
Valentian, Dominic
Morozov, Alexei
Buglois, Antonina
Morozov, Alexei
Buglois, Antonina
Application Number:
JP50249095A
Publication Date:
January 23, 1996
Filing Date:
June 21, 1993
Export Citation:
Assignee:
Societe Europaine de Propulsion
International Classes:
H05H1/54; F03H1/00; H01J1/52; H05H1/00; (IPC1-7): H05H1/54; F03H1/00
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)