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Träfflista för sökning "WFRF:(Stenflo Lennart) ;pers:(Bingham R)"

Sökning: WFRF:(Stenflo Lennart) > Bingham R

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  • Eliasson, B, et al. (författare)
  • Preface to special issue
  • 2013
  • Ingår i: Journal of Plasma Physics. - : Cambridge University Press. - 0022-3778 .- 1469-7807. ; 79:6, s. 981-981
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • This special issue is devoted to the memory of Professor Padma Kant Shukla, who passed away 26 January 2013 on his travel to New Delhi, India to receive the prestigious Hind Rattan (Jewel of India) award. Padma was born in Tulapur, Uttar Pradesh, India, 7 July 1950, where he grew up and got his education. He received a PhD degree in Physics at the Banaras Hindu University, Varanasi, Uttar Pradesh, India, in 1972, under the supervision of late Prof. R. N. Singh, and a second PhD degree in Theoretical Plasma Physics from Umeå University in Sweden in 1975, under the supervision of Prof. Lennart Stenflo. He worked at the Faculty of Physics & Astronomy, Ruhr-University Bochum, Germany since January 1973, where he was a permanent faculty member and Professor of International Affairs, a position that was created for him to honour his international accomplishments and reputation.
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  • Shukla, P K, et al. (författare)
  • Instability of plasma waves caused by incoherent photons in dense plasmas
  • 2010
  • Ingår i: JOURNAL OF PLASMA PHYSICS. - : Cambridge University Press. - 0022-3778. ; 76:Part 6 Sp. Iss. SI, s. 845-851
  • Tidskriftsartikel (refereegranskat)abstract
    • We consider the nonlinear instability of modified Langmuir and ion-sound waves caused by partially coherent photons in dense quantum plasmas. In our model, the dynamics of the photons is governed by a wave kinetic equation. The evolution equations for the Langmuir and ion-sound waves are deduced from the quantum hydrodynamic equations accounting for the incoherent photon pressure, the quantum statistical electron pressure, and the quantum Bohm force acting on the degenerate electrons. The governing equations are Fourier analyzed to obtain nonlinear dispersion relations. The latter are analyzed to predict instability of the modified Langmuir and ion-sound waves in the presence of partially coherent photons. Possible applications of our investigation to the next generation of intense laser-solid dense plasma experiments and compact dense astrophysical bodies are mentioned.
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  • Shukla, Padma, et al. (författare)
  • Letter: Dark and grey electromagnetic electron-cyclotron envelope solitons in an electron-positron magnetoplasma
  • 2009
  • Ingår i: Journal of Plasma Physics. - : Cambridge University Press. - 0022-3778 .- 1469-7807. ; 75:5, s. 575-580
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • We present an investigation of the amplitude modulation of an external magnetic field-aligned right-hand circularly polarized electromagnetic electron-cyclotron (EMEC) wave in a strongly magnetized electron-positron plasma. It is shown that the dynamics of the modulated EMEC wave packet is governed by a cubic nonlinear Schrödinger equation. The latter reveals that a modulated wave packet can propagate in the form of either a dark or a grey envelope soliton. This result could have relevance to the transport of electromagnetic wave energy over long distances via envelope solitons in the magnetospheres of pulsars and magnetars.
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  • Resultat 1-7 av 7

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