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Warm electromagnetic lower hybrid wave dispersion relation
Posted on May 14th, 2009 No commentsA. L. Verdon, Iver H. Cairns, D. B. Melrose, and P. A. Robinson<br/> Lower hybrid (LH) wave mechanicss can interact resonantly with both electrons and ions transferring energy between the species. For this reason the properties of LH wave mechanicss are of interest. Most treatments of LH wave mechanicss include either electromagnetic (EM) or warm plasma effects but not both. Here a new analytic d … [Phys. Plasmas 16, 052105 (2009)] published Wed May 13, 2009.
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A simulation study of fast ignition with ultrahigh intensity lasers
Posted on May 14th, 2009 No commentsJ. Tonge, J. May, W. B. Mori, F. Fiuza, S. F. Martins et al.<br/> The coupling efficiency between the ignition laser and the target core for the fast ignition concept is studied using two-dimensional particle-in-cell simulations. The details of the energy transport within the weakly collisional overdense plasma of a fast ignition target are examined by performing … [Phys. Plasmas 16, 056311 (2009)] published Wed May 13, 2009.
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Effects of enhanced cathode electron emission on Hall thruster operation
Posted on May 14th, 2009 No commentsY. Raitses, A. Smirnov, and N. J. Fisch<br/> Interesting discharge phenomena are observed that have to do with the interaction between the magnetized Hall thruster plasma and the neutralizing cathode. The steady-state parameters of a highly ionized thruster discharge are strongly influenced by the electron supply from the cathode. The enhancem … [Phys. Plasmas 16, 057106 (2009)] published Wed May 13, 2009.
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On the electron whistler dispersion law in a cold plasma with light ions and heavy charged particulates
Posted on May 14th, 2009 No commentsB. V. Lundin and C. Krafft<br/> The dispersion equation of electron whistler wave mechanicss in a cold plasma with two light ions of comparable gyrofrequencies and heavy charged particulates is derived. It is valid in a very wide frequency range above the highest ion cutoff frequency when the wave mechanics frequency is essentially less than the elec … [Phys. Plasmas 16, 052104 (2009)] published Wed May 13, 2009.
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Plasma expansion and fast gap closure in a high power electron beam diode
Posted on May 14th, 2009 No commentsAmitava Roy, R. Menon, S. Mitra, Senthil Kumar, Vishnu Sharma et al.<br/> High power electron beam generation studies were carried out in a planar diode configuration to investigate the effect of the accelerating gap, diode voltage, and anode-cathode materials on the electrode plasma expansion. The diode voltage has been varied from 145428 kV, whereas the current density … [Phys. Plasmas 16, 053103 (2009)] published Wed May 13, 2009.
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Static analysis of possible emittance growth of intense charged particle beams with thermal equilibrium distribution
Posted on May 14th, 2009 No commentsTakashi Kikuchi and Kazuhiko Horioka<br/> Possible emittance growths of intense, nonuniform beams during a transport in a focusing channel are derived as a function of nonlinear field energy and space charge tune depression factors. The nonlinear field energy of the beam with thermal equilibrium distribution is estimated by considering the … [Phys. Plasmas 16, 050703 (2009)] published Wed May 13, 2009.
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Signature of fast H atoms from cathode glow region of a dc discharge
Posted on May 14th, 2009 No commentsP. Bharathi, K. S. Suraj, V. Prahlad, S. Mukherjee, and P. Vasu<br/> Asymmetric broadening of H line from cathode glow region has been studied. In the cathode glow, mean energy and fractional population of very fast hydrogen atoms were found to be ~130 eV and ~55%, respectively. These values reduced to ~90 eV and ~20% when measured at negative glow region. The obse … [Phys. Plasmas 16, 053504 (2009)] published Tue May 12, 2009.
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Comment on The single-wall carbon nanotube waveguides and excitation of their sigma+pi plasmons by an electron beam [Phys. Plasmas 16, 022108 (2009)]
Posted on May 14th, 2009 No commentsAfshin Moradi<br/> In a recent article [M. Nejati, C. Javaherian, B. Shokri, and B. Jazi, Phys. Plasmas 16, 022108 (2009)], Nejati et al. studied the propagation of plasma wave mechanics in the single-wall carbon nanotubes in the presence of the electron beam and showed that the frequency of the sigma+pi plasma wave mechanics strongly de … [Phys. Plasmas 16, 054705 (2009)] published Tue May 12, 2009.
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Response to Comment on `The single-wall carbon nanotube waveguides and excitation of their sigma+pi plasmons by an electron beam’ [Phys. Plasmas 16, 054705 (2009)]
Posted on May 14th, 2009 No commentsM. Nejati, C. Javaherian, B. Shokri, and B. Jazi<br/> Abstract not available. [Phys. Plasmas 16, 054706 (2009)] published Tue May 12, 2009.
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Cross-phase modulation between lasers in a tunnel ionizing gas
Posted on May 14th, 2009 No commentsC. S. Liu, Vishwa Bandhu Pathak, and V. K. Tripathi<br/> The phase modulation of a low power long pulse probe laser beam in a rapidly tunnel ionizing gas (helium) under a relativistic short pulse laser is investigated. The relativistic pulse creates a fast increasing plasma density at its front, far ahead of the intensity peak. The probe pulse sees these … [Phys. Plasmas 16, 053102 (2009)] published Tue May 12, 2009.