Simulations of plasma heating caused by the coalescence of multiple current loops in a proton-boron fusion plasma

Haruki, T.; Yousefi, H. R.; Sakai, J.-I.
March 2010
Physics of Plasmas;Mar2010, Vol. 17 Issue 3, p032504
Academic Journal
Two dimensional particle-in-cell simulations of a dense plasma focus were performed to investigate a plasma heating process caused by the coalescence of multiple current loops in a proton-boron-electron plasma. Recently, it was reported that the electric field produced during the coalescence of two current loops in a proton-boron-electron plasma heats up all plasma species; proton-boron nuclear fusion may therefore be achievable using a dense plasma focus device. Based on this work, the coalescence process for four and eight current loops was investigated. It was found that the return current plays an important role in both the current pinch and the plasma heating. The coalescence of four current loops led to the breakup of the return current from the pinched plasma, resulting in plasma heating. For the coalescence of eight current loops, the plasma was confined by the pinch but the plasma heating was smaller than the two and four loop cases. Therefore the heating associated with current loop coalescence depends on the number of initial current loops. These results are useful for understanding the coalescence of multiple current loops in a proton-boron-electron plasma.


Related Articles

  • Target ionization by a high current relativistic monoenergetic electron beam. Debayle, A.; Tikhonchuk, V. T. // Physics of Plasmas;Jul2007, Vol. 14 Issue 7, p073104 

    The propagation through an insulator of a high-current monoenergetic fast electron beam is investigated in a one-dimensional model. The target ionization provides the charge and current neutralization and enables the beam propagation. The ionization process consists of two stages: (i) the...

  • Inter-conversion of Work and Heat With Plasma Electric Fields. Avinash, K. // AIP Conference Proceedings;11/23/2010, Vol. 1308 Issue 1, p196 

    Thermodynamics of a model system where a group of cold charged particles locally confined in a volume VP within a warm plasma of temperature T and fixed volume V (VP<

  • Simulation of near-surface proton-stimulated diffusion of boron in silicon. Aleksandrov, O. V.; Kozlovski, V. V. // Semiconductors;Mar2008, Vol. 42 Issue 3, p257 

    A quantitative model for near-surface redistribution of doping impurity in silicon in the course of proton-stimulated diffusion is developed for the first time. According to the model, the near-surface peak of the impurity concentration is caused by migration of neutral...

  • Fast-wave multifrequency diagnostic of tokamak plasmas. LaFonteese, D. J.; Morales, G. J.; Taylor, R. J. // Physics of Plasmas;May2007, Vol. 14 Issue 5, p052510 

    An exploratory investigation, both computational and experimental, is made of the diagnostic possibilities of a fast wave-based method for measuring the ion density and temperature profiles of tokamak plasmas. The concept consists of simultaneously launching several discrete frequencies and...

  • SIMULATIONS ON WAVE PROPAGATION IN FLUCTUATING FUSION PLASMAS FOR REFLECTOMETRY APPLICATIONS AND NEW DEVELOPMENTS. Heuraux, St├ęphane; Da Silva, Filipe // Discrete & Continuous Dynamical Systems - Series S;Apr2012, Vol. 5 Issue 2, p307 

    The problems associated to the optimization of the systems of a future fusion reactor require new developments due to the limits of existing models, which are unable to describe the experimental behaviour of diagnostics with the required accuracy. This is also true for the study of the coupling...

  • ECR heating power modulation as a means to ease the overcoming of the radiation barrier in fusion devices. Morozov, D.; Pshenov, A.; Mineev, A. // Plasma Physics Reports;Jun2010, Vol. 36 Issue 6, p447 

    A method is proposed to ease the overcoming of the impurity radiation barrier during current drive in tokamaks, as well as in alternative fusion and plasmochemical systems with ECR plasma heating. The method is based on the fact that the dependence of the ionization rate on the electron...

  • General Criteria and Operation Limits of a Steady-State Fusion Reactor with Respect to Plasma-Material Interaction. Naujoks, D. // AIP Conference Proceedings;5/20/2010, Vol. 1237 Issue 1, p3 

    The magnetic confinement of a hot plasma is the most promising concept to realize controlled thermonuclear fusion on earth. In the last years of intense research activities in the frame of broad international collaboration, it became clear that on the way to a stationary operating fusion reactor...

  • Plasma heating during the parametric excitation of acoustic waves in coronal magnetic loops. Zaitsev, V.; Kislyakova, K. // Astronomy Reports;Apr2010, Vol. 54 Issue 4, p367 

    We examine plasma heating due to the dissipation of acoustic waves excited in coronal magnetic loops by parametric resonance with the five-minute oscillations in the velocity of the photospheric convection. The energy of acoustic waves excited in the coronal magnetic loop, rate of dissipation of...

  • Particle diagnostics of ion cyclotron resonance plasma heating in the Globus-M tokamak. Chernyshev, F. V.; Ayushin, B. B.; Gusev, V. K.; D'yachenko, V. V.; Minaev, V. B.; Mironov, M. I.; Petrov, M. P.; Petrov, Yu. V.; Sakharov, N. V.; Khitrov, S. A.; Shcherbinin, O. N. // Plasma Physics Reports;Nov2009, Vol. 35 Issue 11, p903 

    Basic experimental results on cyclotron heating of the ion plasma component in the Globus-M spherical tokamak obtained by means of the ACORD-12 charge-exchange ion analyzer are presented. A procedure for determining the maximum energy of fast ions confined in the plasma is described. The...


Read the Article


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

Try another library?
Sign out of this library

Other Topics