Multiphoton-double-ionization probability linearly depends on laser intensity: Experimental studies of barium
| Autor: | Bondar, I. I., Suran, V. V., Bondar, D. I. |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Phys. Rev. A 88, 023407 (2013) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevA.88.023407 |
| Popis: | Despite inherently complex multiphoton dynamics, our observations show that Ba double ionization with an infrared laser (8800-8920 cm^{-1}) resembles a single-photon process; namely, its probability is proportional to the laser intensity. In this regime, single-electron ionization is due to a four-photon resonant transition through the highly perturbed state 6p^2 1D_2, whereas double ionization is realized by the two-electron mechanism. Furthermore, we argue that these conclusions are valid for other alkaline-earth-metal atoms and other parameters of laser radiation. Comment: 7 pages and 7 figures |
| Databáze: | arXiv |
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