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Pulse-delay effects in the angular distribution of near-threshold EUV + IR two-photon ionization of Ne

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posted on 2024-08-06, 10:12 authored by S. Mondal, H. Fukuzawa, K. Motomura, T. Tachibana, K. Nagaya, T. Sakai, K. Matsunami, S. Yase, M. Yao, S. Wada, H. Hayashita, N. Saito, C. Callegari, Kevin PrinceKevin Prince, C. Miron, M. Nagasono, T. Togashi, M. Yabashi, K. L. Ishikawa, A. K. Kazansky, N. M. Kabachnik, K. Ueda
Photoelectron angular distributions (PADs) from two-photon near-threshold ionization of Ne atoms by the combined action of femtosecond pulses from an extreme ultraviolet (EUV) free-electron laser and infrared (IR) laser have been studied experimentally and theoretically. Solutions of the time-dependent Schr ' odinger equation indicate that the PADs strongly depend on the time delay between EUV and IR pulses. The experimental results obtained for two extreme cases of completely overlapping and nonoverlapping pulses fully confirm the prediction, illustrating that the measurements of the time-delay dependence of the PAD provide a tool for investigating the fundamental problem of the relative importance of the resonant and nonresonant pathways in the two-color two-photon processes.

Funding

RIKEN

Japan Society for the Promotion of Science

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ISSN

1050-2947

Journal title

Physical Review A - Atomic, Molecular, and Optical Physics

Volume

89

Issue

1

Article number

article no. 013415

Pagination

5 pp

Publisher

American Physical Society

Copyright statement

Copyright © 2014 American Physical Society. The published version is reproduced in accordance with the copyright policy of the publisher.

Language

eng

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