Deexcitation of high-Rydberg-state atoms with a chirped train of half-cycle pulses

Encouraged by the experiments on production of antihydrogen atoms in high Rydberg states we have calculated the effect of deexcitation towards lower states by a chirped train of identical unidirectional half-cycle pulses. The calculations exploit both the one-dimensional and impulse approximations p...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2007-05, Vol.75 (5), Article 055402
Main Authors: Kopyciuk, T., Parzyński, R.
Format: Article
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
ATOMS
DE-EXCITATION
DENSITY
DISTRIBUTION
DISTRIBUTION FUNCTIONS
EFFICIENCY
HYDROGEN
IMPULSE APPROXIMATION
ONE-DIMENSIONAL CALCULATIONS
PERIODICITY
PHASE SPACE
PHOTON-ATOM COLLISIONS
PROBABILITY
PULSES
RYDBERG STATES
TRANSITION AMPLITUDES
WAVE PACKETS
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Summary:Encouraged by the experiments on production of antihydrogen atoms in high Rydberg states we have calculated the effect of deexcitation towards lower states by a chirped train of identical unidirectional half-cycle pulses. The calculations exploit both the one-dimensional and impulse approximations providing convenient analytical formulas for the Rydberg-to-Rydberg transition amplitudes. The calculated deexcitation is shown in terms of the mean value of localization of the Rydberg wave packet in the coordinate space, the Rydberg-state population distribution, the Husimi phase-space distribution function, and the probability density distribution, each of these measures vs the length of the applied train of half-cycle pulses. The results for chirped trains are compared with those for periodic trains and examples of higher deexcitation efficiency of the chirped trains are given.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.75.055402