H-atom ionization by elliptically polarized microwave fields: The overlap criterion

Journal Article · Tue Jul 01 00:00:00 EDT 1997 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.56.719· OSTI ID:531788

Sacha, K; Zakrzewski, J ^[1]

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1. Instytut Fizyki imienia Mariana Smoluchowskiego, Uniwersytet Jagiellonski, ulica Reymonta 4, 30-059 Krakow (Poland)

The threshold for H-atom ionization by elliptically polarized microwave fields is discussed within the classical-mechanics framework using the Chirikov overlap criterion. It is shown that the trends observed in the recent experiment [M. R. W. Bellermann {ital et al.} Phys. Rev. Lett. {bold 76}, 892 (1996)] are qualitatively reproduced by the theory; the origin of the remaining discrepancy is discussed. Increased stability of some orbits with respect to the perturbation due to the elliptically polarized microwaves has been related to vanishing widths of the corresponding resonance islands. Analytic Chirikov overlap prediction is compared with results of numerical simulations. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 531788
• Journal Information: Physical Review A, Vol. 56, Issue 1; Other Information: PBD: Jul 1997
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
HYDROGEN
PHOTOIONIZATION
MICROWAVE RADIATION
NUMERICAL SOLUTION
ORBITS
POLARIZATION
PHOTON-ATOM COLLISIONS