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American Journal of Modern Physics

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Volume 3, Issue 5, September 2014

  • Criterion for Existence of the Negative Dielectric Reality in Crystals

    Stanislav Felinskyi, Georgii Felinskyi

    Issue: Volume 3, Issue 5, September 2014
    Pages: 195-201
    Received: 20 August 2014
    Accepted: 1 September 2014
    Published: 20 September 2014
    DOI: 10.11648/j.ajmp.20140305.11
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    Abstract: The real physical conditions of appearance the negative dielectric permittivity (DP) within frequency TL splitting of polar vibrations in crystals are discussed in this paper. We have derived the simple quantitative criterion for the existence of negative DP band using single oscillation model. Our criterion is presented in three equivalent forms ... Show More
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  • Diffusivity Scaling on Shear Flow

    Zhong-Tian Wang, Zhi-Xiong He, Jia-Qi Dong, Zhan-Hui Wang, Shao-Yong Chen, Chang-Jian Tang

    Issue: Volume 3, Issue 5, September 2014
    Pages: 202-206
    Received: 4 September 2014
    Accepted: 20 September 2014
    Published: 30 September 2014
    DOI: 10.11648/j.ajmp.20140305.12
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    Abstract: Diffusivity scaling on shear flow is investigated. Radial electrical field is the drive of the flow. The turning points of the trapped particle are not on the drift surface, but modified by the radial electrical field. For the first time, an analytical expression of the banana width in presence of shear flow is accurately derived. The particle diff... Show More
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  • Quasilinear Theory for Relativistic Particles

    Zhong-Tian Wang, Zhi-Xiong He, Zhan-Hui Wang, Min Xu, Jia-Qi Dong, Na Wu, Shao-Yong Chen, Chang-Jian Tang

    Issue: Volume 3, Issue 5, September 2014
    Pages: 207-210
    Received: 15 September 2014
    Accepted: 25 September 2014
    Published: 30 September 2014
    DOI: 10.11648/j.ajmp.20140305.13
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    Abstract: Quasilinear theory is developed by using canonical variables for relativistic particles. It is self-consistent, including momentum, pitch-angle, and spatial diffusions. By assuming the wave field is a superposition of known toroidal and poloidal Fourier modes, the quasilinear diffusion coefficients are written in a form which can be directly evalua... Show More
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