비의류제품

radiation-induced modification of the atomic momentum distribution in a travelling-wave resonant light field

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 437
a quantum-mechanical transport equation of the boltzmann type is proposed for the momentum-distribution function of atoms in the field of a quasiresonant travelling light wave. the physical meaning of the solution is discussed in terms of the linear momentum transferred from the photons to the atoms through a succession of photon-scattering processes, the number of which follows a poisson law. a connection is established with the random-flight problem. the analytical expression of the radiation-modified atomic-momentum-distribution function is derived explicitly. the first and second moments of the distribution correspond to a drift (associated with an average force) and a smearing out (associated with an anisotropic diffusion tensor), respectively. the latter effect is shown to arise from the dispersion in both the number and the direction of the scattered photons
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