Ionization of and H 2 + and H 2 in intense laser fields: Excited state dynamics

T. Kato; Hirohiko Kono; M. Kanno; Y. Fujimura; K. Yamanouchi

doi:10.1134/S1054660X09150249

Ionization of and H ₂ ⁺ and H ₂ in intense laser fields: Excited state dynamics

T. Kato, Hirohiko Kono, M. Kanno, Y. Fujimura, K. Yamanouchi

SCI - Chemistry

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

The dynamical behavior of H ₂ ⁺ in near-infrared, intense laser fields (I > 10¹³ W/cm² and λ > 700 nm) was discussed on the basis of the results of accurate electronic and nuclear wave packet propagation obtained by the application of the dual transformation method. Using "field-following" time-dependent adiabatic states defined as the eigenfunctions of the "instantaneous" electronic Hamiltonian including the dipole interaction with laser fields, we clarify the importance of the excited state dynamics in the ionization process. We also discuss the mechanism of ionization of H₂ on the basis of the description of the multicofiguration time-dependent Hartree-Fock (MCTDHF) method.

Original language	English
Pages (from-to)	1712-1722
Number of pages	11
Journal	Laser Physics
Volume	19
Issue number	8
DOIs	https://doi.org/10.1134/S1054660X09150249
Publication status	Published - 2009 Aug

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Instrumentation
Condensed Matter Physics
Industrial and Manufacturing Engineering

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title = "Ionization of and H 2 + and H 2 in intense laser fields: Excited state dynamics",

abstract = "The dynamical behavior of H 2 + in near-infrared, intense laser fields (I > 1013 W/cm2 and λ > 700 nm) was discussed on the basis of the results of accurate electronic and nuclear wave packet propagation obtained by the application of the dual transformation method. Using {"}field-following{"} time-dependent adiabatic states defined as the eigenfunctions of the {"}instantaneous{"} electronic Hamiltonian including the dipole interaction with laser fields, we clarify the importance of the excited state dynamics in the ionization process. We also discuss the mechanism of ionization of H2 on the basis of the description of the multicofiguration time-dependent Hartree-Fock (MCTDHF) method.",

author = "T. Kato and Hirohiko Kono and M. Kanno and Y. Fujimura and K. Yamanouchi",

note = "Funding Information: ACKNOWLEDGMENTS This work was supported in part by a grant in aid for scientific research (no. 19350001) and grants in aid for scientific research on priority area, “Molecular Theory for Real Systems” (area no. 461) and grants in aid for specially promoted research on “Ultrafast Hydrogen Migration” (no. 19002006) from the Minis try of Education, Culture, Sports, Science and Tech nology, Japan. M. K. acknowledges financial support from a JSPS Research Fellowship for Young Scientists (no. 18.5252).",

year = "2009",

month = aug,

doi = "10.1134/S1054660X09150249",

language = "English",

volume = "19",

pages = "1712--1722",

journal = "Laser Physics",

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T1 - Ionization of and H 2 + and H 2 in intense laser fields

T2 - Excited state dynamics

AU - Kato, T.

AU - Kono, Hirohiko

AU - Kanno, M.

AU - Fujimura, Y.

AU - Yamanouchi, K.

N1 - Funding Information: ACKNOWLEDGMENTS This work was supported in part by a grant in aid for scientific research (no. 19350001) and grants in aid for scientific research on priority area, “Molecular Theory for Real Systems” (area no. 461) and grants in aid for specially promoted research on “Ultrafast Hydrogen Migration” (no. 19002006) from the Minis try of Education, Culture, Sports, Science and Tech nology, Japan. M. K. acknowledges financial support from a JSPS Research Fellowship for Young Scientists (no. 18.5252).

PY - 2009/8

Y1 - 2009/8

N2 - The dynamical behavior of H 2 + in near-infrared, intense laser fields (I > 1013 W/cm2 and λ > 700 nm) was discussed on the basis of the results of accurate electronic and nuclear wave packet propagation obtained by the application of the dual transformation method. Using "field-following" time-dependent adiabatic states defined as the eigenfunctions of the "instantaneous" electronic Hamiltonian including the dipole interaction with laser fields, we clarify the importance of the excited state dynamics in the ionization process. We also discuss the mechanism of ionization of H2 on the basis of the description of the multicofiguration time-dependent Hartree-Fock (MCTDHF) method.

AB - The dynamical behavior of H 2 + in near-infrared, intense laser fields (I > 1013 W/cm2 and λ > 700 nm) was discussed on the basis of the results of accurate electronic and nuclear wave packet propagation obtained by the application of the dual transformation method. Using "field-following" time-dependent adiabatic states defined as the eigenfunctions of the "instantaneous" electronic Hamiltonian including the dipole interaction with laser fields, we clarify the importance of the excited state dynamics in the ionization process. We also discuss the mechanism of ionization of H2 on the basis of the description of the multicofiguration time-dependent Hartree-Fock (MCTDHF) method.

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JO - Laser Physics

JF - Laser Physics

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ER -

Ionization of and H ₂ ⁺ and H ₂ in intense laser fields: Excited state dynamics

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