A stochastic model for transient magnetic fields as observed by perturbed angular distribution of gamma rays

  • Tabish Qureshi
  • Sushanta Dattagupta
Original Contributions

Abstract

A stochastic model is introduced to study the transient magnetic field (TF) experienced by the nuclei of fast ions traversing a ferromagnetic medium. The field is assumed to arise primarily from the bound electrons of the ion, polarized by the internal magnetic field of the ferromagnetic specimen. Spin-flip scattering is considered to be the dominant mechanism for polarization transfer from the host to the ion. Electron capture and loss mechanisms are also taken into account in a phenomenological manner. An analytical expression is derived for the TF which depends on the electron capture and loss cross-sections. The result for the perturbation factor is shown to be more general than that derived by Abragam and Pound and reduces to their result in the appropriate limit.

PACS

76.80.+y 34.10.+x 34.90.+q 

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Copyright information

© Springer-Verlag 1994

Authors and Affiliations

  • Tabish Qureshi
    • 1
  • Sushanta Dattagupta
    • 1
  1. 1.School of Physical SciencesJawaharlal Nehru UniversityNew DelhiIndia
  2. 2.The Institute of Mathematical Sciences C.I.T. CampusMadrasIndia

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