Differential cross sections of double photoionization of lithium

Kheifets, Anatoli; Fursa, Dmitry V.; Bray, Igor; Colgan, J.; Pindzola, M. S.

doi:10.1103/physreva.82.023403

Cited by 9 publications

(7 citation statements)

References 36 publications

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“…Double ionization processes have been scrutinized for correlation effects, in particular, those involving only singlephoton absorption. More recently, two-electron numerical studies of one-photon double ionization processes have been extended to more complex systems, such as lithium [14,15] and beryllium [15,16].…”

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Nonsequential double ionization of the hydride ion by two-photon absorption

Nepstad

Førre

2011

Phys. Rev. A

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We apply a recently developed ab initio numerical framework to calculate (generalized) total cross sections for the process of nonsequential (direct) two-photon double ionization of the hydride ion (H − ), at photon energies ranging from 7.75 to 10.5 eV. The total cross section is about an order of magnitude larger than the corresponding one obtained for helium, the reason being that the electronic correlation is relatively more important in H − . Furthermore, we examine single-and triple-differential cross sections at the photon energies 7.75 and 9 eV and find that for the lower photon energy the electron energy distribution attains a maximum when both electrons are emitted with equal energies.

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Nonsequential double ionization of the hydride ion by two-photon absorption

Nepstad

Førre

2011

Phys. Rev. A

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“…Here, the unit vectors n 1 , n 2 and e denote escape directions of the photoelectrons and the polarization vector of light, respectively. A more general expression with an arbitrary spin of the target and unequal energy sharing between photoelectrons is given in our earlier paper (Kheifets et al 2010a). 5 Author to whom any correspondence should be addressed.…”

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Interference effects in L-shell atomic double photoionization

Kheifets

Bray

Colgan

et al. 2010

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

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Angular correlation pattern in two-electron continuum is very similar in double photoionization (DPI) of a neutral atom γ + A → A 2+ + 2e − and electronimpact ionization of the corresponding singly charged ion e − + A + → A 2+ + 2e −. This allows us to identify and to interpret interference effects in DPI of various L-shell atomic targets such as the metastable He* 1s2s 1 S and the ground state Li 1s 2 2s and Be 1s 2 2s 2 .

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“…As the simplest open-shell atom, Li is used as a benchmark to study multielectron effects. * fhe@sjtu.edu.cn Numerical models based on the close-coupling method [16][17][18][19][20] can provide reliable photoionization cross sections of Li [21][22][23]. The directly numerical simulations of one-dimensional time-dependent Schrödinger equation (TDSE) have been used to study spin-resolved strong field ionization [24][25][26].…”

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confidence: 99%