Angular momentum of radiation at axial channeling

Vladimir Epp, Julia Janz, Margarita Zotova

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We study theoretically the angular momentum of radiation emitted at axial channeling of the fast particles in a crystal or in a bunch of micro- or nanotubes placed in strong magnetic field. It is shown that high energy particles channeled in the presence of magnetic field are effective source of vortex radiation in the X-ray and gamma-range of photons energies. We show that there are two factors that increase the angular momentum of emitted radiation in the presence of magnetic field. First, the magnetic field favours additional “twisting” of the channeled particles in a certain direction and, secondly, the particles that have the corresponding initial angular momentum are predominantly captured into the channeling mode. Dependence of the angular momentum of radiation on the value of magnetic field and on the incident angle is studied.

Original languageEnglish
Pages (from-to)78-83
Number of pages6
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume436
DOIs
Publication statusPublished - 1 Dec 2018

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Keywords

  • Angular momentum
  • Channeling
  • crystal
  • nanotubes
  • Orbital momentum
  • Twisted radiation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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