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Title: Pulse-duration dependence of the double-to-single ionization ratio of Ne by intense 780-nm and 800-nm laser fields: Comparison of simulations with experiments

Journal Article · · Physical Review A
 [1];  [1];  [1];  [2];  [2];  [3];  [4]
  1. Shantou University (China)
  2. Drake University, Des Moines, IO (United States)
  3. The University of Electro-Communications, Tokyo (Japan)
  4. Kansas State Univ., Manhattan, KS (United States)
+ Show Author Affiliations

Accurate ab initio calculations of the ratio of double-to-single ionization of Ne atoms in strong laser fields are difficult due to the many-electron nature of the target. Here, with accurate total cross sections carefully evaluated by using the state-of-the-art many-electron R-matrix theory for both electron-impact ionization and electron-impact excitation of Ne+, we simulate the total double-ionization yields of Ne2+ in strong laser fields at 780 and 800 nm for pulse durations in the range from 7.5 to 200 fs based on the improved quantitative rescattering model. The corresponding single-ionization yields of Ne+ are calculated within the nonadiabatic tunneling model of Perelomov, Popov, and Terent'ev. The ratio of double-to-single ionization of Ne is then obtained from the calculated double- and single-ionization yields. By normalizing the ratio to the one calculated from solving the time-dependent Schrödinger equation for a short few-cycle pulse, we make quantitative comparisons of our results with experimental data to show that our model predicts the experimental findings very well. Lastly, we analyze the pulse-duration dependence of the double-to-single ionization ratio.

Research Organization:
Kansas State Univ., Manhattan, KS (United States)
Sponsoring Organization:
National Science Foundation (NSF); National Natural Science Foundation of China (NSFC); JJapan Society for the Promotion of Science (JSPS); Scientific Research Foundation for the Returned Overseas Chinese Scholars; USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division; USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division; Japan Society for the Promotion of Science KAKENHI
Grant/Contract Number:
FG02-86ER13491; PHY-1430245; PHY-1520970; PHY-1803844; 11274219; 16H04029; 16H04103; 17K05597
OSTI ID:
1610048
Alternate ID(s):
OSTI ID: 1505841
Journal Information:
Physical Review A, Vol. 99, Issue 4; ISSN 2469-9926
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

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Cited By (1)

Wavelength-dependent nonsequential double ionization of magnesium by intense femtosecond laser pulses journal September 2019

Figures / Tables (6)

FIG. 1(p. 4)figure FIG. 1
FIG. 2(p. 5)figure FIG. 2
FIG. 3(p. 6)figure FIG. 3
FIG. 4(p. 6)figure FIG. 4
FIG. 5(p. 7)figure FIG. 5
FIG. 6(p. 7)figure FIG. 6

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74 ATOMIC AND MOLECULAR PHYSICS
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