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Phys. Rev. A 61, 060101(R) (2000) [4 pages]

Appearing and disappearing strong-field (2d+time) resonances in H atoms

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E. J. Galvez1,2, P. M. Koch1, D. Richards3, and S. A. Zelazny1
1Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800
2Department of Physics and Astronomy, Colgate University, Hamilton, New York 13346
3Mathematics Faculty, The Open University, Milton Keynes MK7 6AA, United Kingdom

Received 12 November 1998; revised 22 February 2000; published 5 May 2000

When excited hydrogen atoms are driven by collinear static and microwave electric fields, we discover a series of strong-field resonances that can ionize most substates with a given principal quantum number n0. We describe a quantal theory using an adiabatic basis that explains the origin of the resonances and why they disappear at certain ratios of the two fields. Our three-dimensional classical Monte Carlo calculations reproduce this behavior. We demonstrate n selectivity sufficient for continued development of this process as a practical detector.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.61.060101
DOI:
10.1103/PhysRevA.61.060101
PACS:
32.80.Rm, 31.15.Gy, 42.50.Hz
 
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