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Multipole radiation in charged-particle scatteringThis paper formulates the general problem of photon emission in particle scattering using a classical and quantum mechanical approach. The connection between the classical short collision time (SCT) and Born results is examined for various special classifications of problems. In the dipole case the two formulations yield results that can be expressed in the same form and for arbitrary scattering potential. For quadrupole emission the SCT and Born results are the same only for a short-range potential, however. The quadrupole problem is more sensitive to details in the process because the calculation requires an expansion of the total amplitude for the process to lowest order in the photon wave number or momentum. The special case of photon emission associated with spin-flip transitions during scattering is considered for spin-1/2 particles. Like classical magnetic dipole radiation, there is no infrared divergence feature for this type of emission.
Document ID
19910025906
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Gould, Robert J.
(California, University La Jolla, United States)
Date Acquired
August 14, 2013
Publication Date
October 10, 1990
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 362
ISSN: 0004-637X
Subject Category
Physics (General)
Accession Number
91A10529
Funding Number(s)
CONTRACT_GRANT: NGR-05-005-004
Distribution Limits
Public
Copyright
Other

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