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Vanishing of dipole matrix elements at level crossings.Demonstration that the vanishing of certain coupling matrix elements at level crossings follow from angular momentum commutation relations. A magnetic dipole transition having delta M = plus or minus 1, induced near a crossing of the levels in a nonzero magnetic field, is found to have a dipole matrix element comparable to or smaller than the quotient of the level separation and the field. This result also applies in the analogous electric field electric dipole case.
Document ID
19720052103
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Kocher, C. A.
(Columbia University New York, N.Y., United States)
Date Acquired
August 6, 2013
Publication Date
July 1, 1972
Publication Information
Publication: Physical Review A - General Physics
Subject Category
Physics, Atomic, Molecular, And Nuclear
Accession Number
72A35769
Funding Number(s)
CONTRACT_GRANT: NSF GP-13479
CONTRACT_GRANT: NGL-33-008-009
Distribution Limits
Public
Copyright
Other

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