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Kim, Kyung Taec
초강력 레이저과학 연구단
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Interference patterns in ionization of Kramers–Henneberger atom

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Title
Interference patterns in ionization of Kramers–Henneberger atom
Author(s)
Igor Ivanov; Kheifets,Anatoli; Kyung Taec Kim
Publication Date
2022-10
Journal
Scientific Reports, v.12, no.1
Publisher
Nature Research
Abstract
© 2022, The Author(s).We combine IR pump and XUV probe laser pulses to visualize the Kramers–Henneberger (KH) state of the potassium atom. We demonstrate that ionization of such an atom exhibits some molecular-like features such as low order interference maxima in photoelectron momentum spectra. The locations of these maxima allow to estimate spatial dimensions of the KH atom and can be used for accurate calibration of high intensity laser fields. At the same time, we show that an analogy between the KH atom and a homo-nuclear diatomic molecule cannot be extended too far. In particular, higher order interference maxima are very difficult to observe in the case of the KH state. We attribute this to a particular structure of the KH potential which does not confine electron motion to a well-defined potential well unlike in real diatomic molecules.
URI
https://pr.ibs.re.kr/handle/8788114/12613
DOI
10.1038/s41598-022-21549-x
ISSN
2045-2322
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > 1. Journal Papers (저널논문)
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