Laser-assisted (e, 2e) reaction in one-electron atoms and ions

Li, S.-M.; Berakdar, J.; Zhang, S.-T.; Chen, Jiangxi

doi:10.1088/0953-4075/38/8/017

Cited by 26 publications

(9 citation statements)

References 23 publications

(41 reference statements)

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“…In such calculations, the ejected electron is detected in coincidence with the scattered electrons and it is a well known experiment [4]. This kind of experiment, called (e, 2e) experiments, have been successfully used during the last four decades to investigate the fine details of the ionization process both in the ground state [7][8][9][10][11][12][13][14][15][16] and metastable [17][18][19][20][21][22][23][24][25][26][27][28] states of atomic Hydrogen.…”

Section: Introductionmentioning

confidence: 99%

Electron impact ionization of metastable 2P-state hydrogen atoms in the coplanar geometry

Dhar

Nahar

2015

Results in Physics

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a b s t r a c tTriple differential cross sections (TDCS) for the ionization of metastable 2P-state hydrogen atoms by electrons are calculated for various kinematic conditions in the asymmetric coplanar geometry. In this calculation, the final state is described by a multiple-scattering theory for ionization of hydrogen atoms by electrons. Results show qualitative agreement with the available experimental data and those of other theoretical computational results for ionization of hydrogen atoms from ground state, and our first Born results. There is no available other theoretical results and experimental data for ionization of hydrogen atoms from the 2P state. The present study offers a wide scope for the experimental study for ionization of hydrogen atoms from the metastable 2P state.

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Section: Introductionmentioning

confidence: 99%

Electron impact ionization of metastable 2P-state hydrogen atoms in the coplanar geometry

Dhar

Nahar

2015

Results in Physics

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“…This formalism is improved by the consideration of the exchange effect between the free outgoing electrons. Most work on the laser-assisted (e, 2e) reactions employed the first Born approximation (FBA) [25,[39][40][41], due to the difficulty of the numerical calculation of the second Born term. In fact, the second Born approximation needs a difficult triple numerical integration [42] and often many authors find some controversial results.…”

Section: Introductionmentioning

confidence: 99%

Exchange effects and second-order Born corrections in laser-assisted(e,2e)collisions with helium atoms

et al. 2015

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The triple differential cross section for laser-assisted ionization of a helium target by slow electrons is analyzed within the framework of the second Born approximation. We evaluate the S-matrix elements using Volkov and Coulomb-Volkov wave functions for describing the continuum states of the scattered and the ejected electrons, respectively. The required scattering amplitudes are performed by expanding the atomic wave functions onto a complex-scaled Sturmian basis, which allows us to exactly take into account the contribution of the continuous spectrum to the dressing of the atomic states. Our results have been improved by taking into account exchange effects. Furthermore, the second-order Born correction is seen to be important and significantly affects the magnitudes of the binary and recoil peaks.

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“…[24,25], and references therein). More recent works [26][27][28][29][30][31] were largely motivated by the pioneering (e,2e) experiments in the presence of laser radiation [32,33]. At the same time, to our knowledge, neither theoretical nor experimental studies have been carried out for laser-assisted (e,3e) collisions.…”

Section: Introductionmentioning

confidence: 99%

Laser-assisted(e,3e)collisions in helium at high impact energy and large momentum transfer

Bulychev

Kouzakov

2015

Phys. Rev. A

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Electron-impact double ionization of a helium atom in the presence of laser radiation with low frequency and intensity is studied theoretically. The kinematical regime of high impact energy and large momentum transfer, with one slow and two fast electrons in the final channel, is considered. Fully differential cross sections corresponding to the laser-assisted (e,3e) and (e,3 -\e) processes are calculated for different models of the target state. The angular distributions of the slow ejected electron are found to be seriously modified by the laser field and, in contrast to the field-free case, are strongly dependent on the electron-electron correlations in helium. At the same time, the laser-assisted (e,3 -le) results very slightly differ from those in the absence of a laser field.

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Laser-assisted (e, 2e) reaction in one-electron atoms and ions

Cited by 26 publications

References 23 publications

Electron impact ionization of metastable 2P-state hydrogen atoms in the coplanar geometry

Electron impact ionization of metastable 2P-state hydrogen atoms in the coplanar geometry

Exchange effects and second-order Born corrections in laser-assisted(e,2e)collisions with helium atoms

Laser-assisted(e,3e)collisions in helium at high impact energy and large momentum transfer

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