Dissociative autoionization in (1+2)-photon above-threshold excitation of H<sub>2</sub>molecules

Dastidar, Krishna Rai; Das, Ratan Kumar

doi:10.1088/0953-4075/32/13/310

J. Phys. B: At. Mol. Opt. Phys.

1999

DOI: 10.1088/0953-4075/32/13/310

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Dissociative autoionization in (1+2)-photon above-threshold excitation of H₂molecules

Krishna Rai Dastidar¹,

Ratan Kumar Das²

Abstract: Abstract. We have theoretically studied the effect of dissociative autoionization on the photoelectron energy spectrum in (1 + 2)-photon above threshold ionization (ATI) of H 2 molecules. We have considered excitation from the ground

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The role of autoionization in (1+2′)-photon above-threshold ionization of H2 molecules: Study of photoelectron energy spectrum

Dastidar

Das

2000

The Journal of Chemical Physics

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We have theoretically studied the effect of autoionization through doubly-excited autoionizing states on the photoelectron energy spectrum in (1+2′)-photon above-threshold ionization (ATI) of H2 molecules. We have considered excitation from the ground X 1Σg(v″=0 ,j″) state to the dissociation continuum of autoionizing states of 1Σu and 1Πu symmetry, via the intermediate resonant B 1Σu(v′=5, j′) state. These autoionizing states decay to form molecular ions in the dissociation continuum (dissociative autoionization) and in the bound vibrational levels (nondissociative autoionization) of the ionic ground state (X 2Σg), as well as free electrons carrying extra energy. We have found that the photoelectron spectrum (PES) is mainly determined by the autoionization from the doubly-excited autoionizing states of ungerade symmetry, and that it is oscillatory in nature and shows a structure similar to that observed in a recent experiment by Rottke et al. [J. Phys. B 30, 4049 (1997).]

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The role of autoionization in (1+2′)-photon above-threshold ionization of H2 molecules: Study of photoelectron energy spectrum

Dastidar

Das

2000

The Journal of Chemical Physics

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Dissociative autoionization in (1+2)-photon above-threshold excitation of H₂molecules

Abstract: Abstract. We have theoretically studied the effect of dissociative autoionization on the photoelectron energy spectrum in (1 + 2)-photon above threshold ionization (ATI) of H 2 molecules. We have considered excitation from the ground

Cited by 1 publication

References 40 publications

The role of autoionization in (1+2′)-photon above-threshold ionization of H2 molecules: Study of photoelectron energy spectrum

The role of autoionization in (1+2′)-photon above-threshold ionization of H2 molecules: Study of photoelectron energy spectrum

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Dissociative autoionization in (1+2)-photon above-threshold excitation of H2molecules

Abstract: Abstract. We have theoretically studied the effect of dissociative autoionization on the photoelectron energy spectrum in (1 + 2)-photon above threshold ionization (ATI) of H 2 molecules. We have considered excitation from the ground

Cited by 1 publication

References 40 publications

The role of autoionization in (1+2′)-photon above-threshold ionization of H2 molecules: Study of photoelectron energy spectrum

The role of autoionization in (1+2′)-photon above-threshold ionization of H2 molecules: Study of photoelectron energy spectrum

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Dissociative autoionization in (1+2)-photon above-threshold excitation of H₂molecules