Excitation and ionization in H(1s)-H(1s) collisions: II. Inclusion of electron exchange

Riley, Merle E.; Ritchie, A. B.

doi:10.1088/0953-4075/33/22/318

Cited by 4 publications

(8 citation statements)

References 23 publications

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“…[16−18] The results of hidden crossings method [1,19] have obtained an excellent agreement with experimental data of H + in H(1s)+H(1s) collisions in the energy range of 0.05-1 keV. One-electron description [2] and twoelectron self-consistent-field description [20] of closecoupling approach have been carried out for H(2s), H(2p) and H + cross sections in H(1s)+H(1s) collisions, having the best agreement with the experimental data till now, still with discrepancies for H(2p) cross section unresolved.…”

mentioning

confidence: 69%

“…In the peak position around 20 keV, our CTMC calculations underestimate the experimental data by 9.4-9.9%, and beyond 50 keV, our results overestimate the experimental data [6,8] by 14.3-30.7%. The results of time-dependent self-consistent-field description in the impact parameter approximation by Riley and Ritchie [20] underestimate the experimental data by 26.8-43.7% above 10keV. The experimental data of Wittkower et al [9] deviate apparently from those of Hill et al [6] and McClure [8] for incident energy below 50 keV.…”

mentioning

confidence: 77%

“…( 6) and (9). [10] solid pentagons: CTMC calculations of Becker and MacKellar; [11] solid triangles: time-dependent selfconsistent-field method of Riley and Ritchie; [20] open squares: experimental results of McClure; [8] open circles: experimental results of Hill et al [6] open pentagons: experimental results of Wittkower et al [9] The double-ionization cross sections of the three systems are presented in Fig. 5.…”

mentioning

confidence: 99%

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Theoretical Investigation on Excitation, Ionization and Capture in H(1 s , 2 s ) + H(1 s , 2 s ) Collisions

Lan-Fang

Zhu

et al. 2008

Chinese Phys. Lett.

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Cross sections of electron-loss in H(ls)+ H(ls) collisions and total collisional destruction of H(2s) in H(ls) + H(2s) collisions are calculated by four-body classical-trajectory Monte Carlo (CTMC) method and compared with previous theoretical and experimental data over the energy range of 4–100 keV. For the former a good agreement is obtained within different four-body CTMC calculations, and for the incident energy Ep > 10keV, comparison with the experimental data shows a better agreement than the results calculated by the impact parameter approximation. For the latter, our theory predicts the correct experimental behaviour, and the discrepancies between our results and experimental ones are less than 30%. Based on the successive comparison with experiments, the cross sections for excitation to H(2p), single- and double-ionization and H- formation in H(2s)+H(2s) collisions are calculated in the energy range of 4–100keV for the first time, and compared with those in H(ls)+H(ls) and H(ls)+H(2s) collisions.

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confidence: 69%

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confidence: 77%

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confidence: 99%

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Theoretical Investigation on Excitation, Ionization and Capture in H(1 s , 2 s ) + H(1 s , 2 s ) Collisions

Lan-Fang

Zhu

et al. 2008

Chinese Phys. Lett.

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“…Substituting the scattering wave function (16) into the Schrödinger equation 1and following the same procedure as in Section II A we obtain the final set of coupledchannel differential equations…”

Section: B Hydrogen-hydrogen Collisionsmentioning

confidence: 99%

“…The spin effects are expected to be small in the energy range between 10 keV and 3 MeV where we apply our method. However, at low energies, in particular around 10 keV and below, the spin effects become important [13][14][15][16]. Nevertheless, to our best knowledge, there has been no attempt to include them in stopping power calculations.…”

Section: Introductionmentioning

confidence: 99%

Proton-beam stopping in hydrogen

et al. 2019

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The stopping cross section for protons passing through hydrogen is calculated for the energy range between 10 keV and 3 MeV. Both the positive and neutral charge-states of the projectile are accounted for. The two-centre convergent close-coupling method is used to model proton collisions with hydrogen. In this approach electron-capture channels are explicitly included by expanding the scattering wave function in a basis of both target and projectile pseudostates. Hydrogen collisions with hydrogen are modelled using two methods: the single-centre convergent close-coupling approach is used for the calculation of one-electron processes, while two-electron processes are calculated using the Born approximation. The aforementioned approaches are also applied to the calculation of the charge-state fractions. These are then used to combine the proton-hydrogen and hydrogen-hydrogen stopping cross sections to yield the total stopping cross section for protons passing through hydrogen.

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Projectile electron loss, excitation and de-excitation cross section database in a collision between two hydrogen atoms in the impact energy range between 50 keV–5.0 MeV, Part I: Target is in ground state

Atawneh

Tőkési

2022

Atomic Data and Nuclear Data Tables

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Excitation and ionization in H(1s)-H(1s) collisions: II. Inclusion of electron exchange

Abstract: Hydrogen atom -hydrogen atom scattering is a prototype for many of the fundamental principles of atomic collisions. In this work we present the formalism

Cited by 4 publications

References 23 publications

Theoretical Investigation on Excitation, Ionization and Capture in H(1 s , 2 s ) + H(1 s , 2 s ) Collisions

Theoretical Investigation on Excitation, Ionization and Capture in H(1 s , 2 s ) + H(1 s , 2 s ) Collisions

Proton-beam stopping in hydrogen

Projectile electron loss, excitation and de-excitation cross section database in a collision between two hydrogen atoms in the impact energy range between 50 keV–5.0 MeV, Part I: Target is in ground state

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