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Title: Multielectron effects in the photoelectron momentum distribution of noble-gas atoms driven by visible-to-infrared-frequency laser pulses: A time-dependent density-functional-theory approach

Journal Article · · Physical Review A
 [1];  [2];  [3]
  1. National Taiwan Univ., Taipei (Taiwan). Center for Quantum Science and Engineering; Indiana State Univ., Terre Haute, IN (United States)
  2. Indiana State Univ., Terre Haute, IN (United States)
  3. National Taiwan Univ., Taipei (Taiwan). Center for Quantum Science and Engineering; Univ. of Kansas, Lawrence, KS (United States)
+ Show Author Affiliations

In this work, we present the photoelectron momentum distributions (PMDs) of helium, neon, and argon atoms driven by a linearly polarized, visible (527-nm) or near-infrared (800-nm) laser pulse (20 optical cycles in duration) based on the time-dependent density-functional theory (TDDFT) under the local-density approximation with a self-interaction correction. A set of time-dependent Kohn-Sham equations for all electrons in an atom is numerically solved using the generalized pseudospectral method. An effect of the electron-electron interaction driven by a visible laser field is not recognizable in the helium and neon PMDs except for a reduction of the overall photoelectron yield, but there is a clear difference between the PMDs of an argon atom calculated with the frozen-core approximation and TDDFT, indicating an interference of its M-shell wave functions during the ionization. Furthermore, we find that the PMDs of degenerate p states are well separated in intensity when driven by a near-infrared laser field, so that the single-active-electron approximation can be adopted safely.

Research Organization:
Univ. of Kansas, Lawrence, KS (United States); Indiana State Univ., Terre Haute, IN (United States); Univ. of California, Oakland, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Ministry of Science and Technology of Taiwan
Grant/Contract Number:
FG02-04ER15504; FG02-06ER46304; AC02-05CH11231; 06R104021; 106R8700-2
OSTI ID:
1535741
Alternate ID(s):
OSTI ID: 1359977
Journal Information:
Physical Review A, Vol. 95, Issue 5; ISSN 2469-9926
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 10 works
Citation information provided by
Web of Science

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Cited By (4)

Generating high-order optical and spin harmonics from ferromagnetic monolayers journal August 2018
Photoelectron momentum distribution of ground- and excited-state lithium atoms induced by extreme-ultraviolet photon absorption journal August 2018
Photoelectron spectra after multiphoton ionization of Li atoms in the one-photon Rabi-flopping regime journal August 2019
Photoelectron spectra after multiphoton ionization of Li atoms in the one-photon Rabi-flopping regime text January 2019

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Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
Atomic & molecular processes in external fields
atomic spectra
density functional theory
photoemission
strong electromagnetic field effects
strong-field-induced spectra