TITLE

Unexpected transverse velocity component of Xe+ ions near the exit plane of a Hall thruster

AUTHOR(S)
Bourgeois, G.; Mazouffre, S.; Sadeghi, N.
PUB. DATE
November 2010
SOURCE
Physics of Plasmas;Nov2010, Vol. 17 Issue 11, p113502
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The velocity component of singly charged xenon ions in a plane perpendicular to the thrust axis of the 1 kW-class PPS100-ML Hall effect thruster is deduced from laser induced fluorescence measurements on the 5d 2F7/2→6p 2D5/20 electronic transition at 834.72 nm. Measurements are carried out at several locations in the near field of the channel exhaust. Thruster operating parameters, such as magnetic field strength, discharge voltage, and xenon mass flow rate, are varied over a wide range. The initial aim of this work was to measure the azimuthal velocity of the ions due to their weak magnetic deflection. Surprisingly, experimental results cannot be explained by the one and only Lorentz force acting on Xe+ ions. A realistic picture of the ion trajectory in the E×B drift plane is obtained when adding a velocity component directed toward the external cathode.
ACCESSION #
55509521

 

Related Articles

  • EUV radiation characteristics of a CO2 laser produced Xe plasma. Komori, H.; Ueno, Y.; Hoshino, H.; Ariga, T.; Soumagne, G.; Endo, A.; Mizoguchi, H. // Applied Physics B: Lasers & Optics;May2006, Vol. 83 Issue 2, p213 

    A CO2 laser-driven Xe liquid jet plasma has been studied with respect to its usability as a EUV lithography light source. A short-pulse TEA-CO2 master oscillator power amplifier system (MOPA) and a pre-pulse Nd:YAG laser were used for the plasma generation. The dependence of EUV plasma...

  • Intensity clamping and re-focusing of intense femtosecond laser pulses in nitrogen molecular gas. Becker, A.; Aközbek, N.; Vijayalakshmi, K.; Oral, E.; Bowden, C.M.; Chin, S.L. // Applied Physics B: Lasers & Optics;2001, Vol. 73 Issue 3, p287 

    We present results of measurements of fluorescence spectra due to the interaction of a Ti:sapphire laser pulse with N[sub 2] molecules at different gas pressures and pulse energies. The analysis of the data together with the results of numerical simulations, using a propagation model, reveal...

  • Accelerated dense ion filament formed by ultra intense laser in plasma slab. Amitani, H.; Esirkepov, T.; Bulanov, S.; Nishihara, K.; Kuznetsov, A.; Kamenets, F. // AIP Conference Proceedings;2002, Vol. 611 Issue 1, p340 

    The ion acceleration is studied with 3D and 2D PIC simulations of the intense laser pulse interaction with the underdense plasma slab. The simulations reveal the forward acceleration of ions at the rear plasma-vacuum interface. A novel mechanism of the ion acceleration is found. Efficient ion...

  • Far Infrared Radiation Generated during Femtosecond Laser Excitation of a Semiconductor Surface in Magnetic Field. Malevich, V. L. // Technical Physics Letters;Mar2003, Vol. 29 Issue 3, p240 

    The effect of a magnetic field on the generation of electromagnetic radiation pulses in the terahertz frequency range from a semiconductor surface excited by an ultrashort laser pulse is considered within the framework of a hydrodynamic model. The appearance of a photocurrent component in the...

  • Magnetic field generation in a plasma in the presence of an ultrashort laser pulse. Ferrante, G.; Zarcone, M.; Uryupin, S. A. // Physics of Plasmas;Jun2001, Vol. 8 Issue 6, p2918 

    The description of the Weibel instability linear stage for a plasma interacting with an ultrashort laser pulse is given. Pulse durations both smaller and larger than the inverse collision frequency of the thermal electrons are considered. In the latter case the pulse duration is smaller than the...

  • Some recent developments in nonlinear relativistic plasma dynamics. Pegoraro, F.; Borghesi, M.; Bulanov, S. V.; Califano, F.; Esirkepov, T. Zh.; Kuznetsov, A. V. // AIP Conference Proceedings;2002, Vol. 634 Issue 1, p79 

    Some recent developments in the analytical and numerical study of the interaction of ultra-intense ultra-short laser pulses with relativistic plasmas are reviewed. Special attention is given to the subject of ion acceleration in view of its applications which range from proton imaging to the...

  • Microsecond duration optical pulses from a UV-preionized XeCl laser. Taylor, R. S.; Leopold, K. E. // Applied Physics Letters;7/15/1985, Vol. 47 Issue 2, p81 

    XeCl laser pulse durations of 1.5 µs (full width at half-maximum) have been obtained using a recently developed UV-preionized magnetically induced pulser laser excitation scheme.

  • Optical power limiting and stabilization using a two-photon absorbing neat liquid crystal in isotropic phase. He, Guang S.; Lin, Tzu-Chau; Prasad, Paras N.; Cho, Chih-Chien; Yu, Liang-Jye // Applied Physics Letters;6/30/2003, Vol. 82 Issue 26, p4717 

    This letter reports on a neat liquid crystal that incorporates a two-photon-absorbing chromophore in its structure. The nonlinear optical properties including two-photon-induced fluorescence spectrum and decay behavior, as well as the effective two-photon absorption coefficient of this liquid...

  • Three-dimensional opto-fluidic devices fabricated by ultrashort laser pulses for high throughput single cell detection and processing. Hwang, David J.; Moosung Kim; Hiromatsu, Kuniaki; Jeon, Hojeong; Grigoropoulos, Costas P. // Applied Physics A: Materials Science & Processing;Aug2009, Vol. 96 Issue 2, p385 

    Three-dimensional flow-through microchannels were fabricated inside bulk fused silica glass via ultrashort pulsed laser direct writing. The device fabrication sequence takes advantage of the nonlinear volumetric absorption in glass and the subsequent preferential chemical etching process....

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics