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Bhabha scattering and trident production in strong uniform magnetic fields.

机译：强均匀磁场中的Bhabha散射和三叉戟产生。

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摘要

here is now an almost universal acceptance that the interaction of photons and electrons with the strong magnetic fields plays a dominant role in the pulsar emission mechanism. If the emission is at high energies, then these interactions can correctly be formulated only through the use of quantum electrodynamic calculations. Quantum effects may also be important in certain low energy interactions, and often the strong magnetic fields affect the very nature of these processes; certain interactions which are never observed in the terrestrial environment can become possible on neutron stars because of presence of the strong fields.;The discovery of supernova remnants near the sources of Soft Gamma Repeaters suggest that the latter objects are neutron stars with large magnetic. fields. There is also some evidence that Gamma Ray Bursts originate from the surface of neutron stars. Any detailed model of these astrophysical objects must make use of the rates and cross sections calculated using quantum electrodynamics in the presence of the magnetic fields.;In this dissertation we review some previous work done on quantum electrodynamic processes in strong uniform magnetic fields and then we calculate here the cross section for scattering of electrons and positrons (Bhabha scattering) in the strong magnetic fields such as those that might occur on the surface of neutron stars. We find that the Bhabha scattering cross section in magnetic fields is notably different from the cross section in the absence of the field. We also calculate the rate for trident production,
机译：现在，几乎所有人都接受了光子和电子与强磁场的相互作用在脉冲星发射机理中起主要作用的观点。如果发射是高能量的，那么只有通过使用量子电动力学计算，才能正确地表达这些相互作用。在某些低能相互作用中，量子效应也可能很重要，强磁场通常会影响这些过程的本质。由于强场的存在，某些在地球环境中从未观察到的相互作用有可能在中子星上发生。；在软伽玛中继器源附近发现超新星残骸，表明后者是具有大磁场的中子星。领域。也有一些证据表明，伽马射线爆发起源于中子星的表面。这些天体的任何详细模型都必须利用存在磁场的情况下利用量子电动力学计算出的速率和横截面。本文对以前在强均匀磁场中进行量子电动力学过程所做的工作进行回顾。在此处计算在强磁场（例如中子星表面可能发生的磁场）中电子和正电子散射（巴巴散射）的横截面。我们发现磁场中的Bhabha散射截面与没有磁场时的截面明显不同。我们还计算三叉戟生产的比率，

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  • 作者

    Sina, Ramin.;

  • 作者单位

    University of Maryland, College Park.;

  • 授予单位 University of Maryland, College Park.;
  • 学科 Astronomy.;High energy physics.
  • 学位 Ph.D.
  • 年度 1996
  • 页码 183 p.
  • 总页数 183
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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