Coupled-state calculations of proton—hydrogen-atom scattering using a scaled hydrogenic basis set

Shakeshaft, Robin

doi:10.1103/physreva.18.1930

Cited by 226 publications

(84 citation statements)

References 15 publications

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“…When referring to a perturbed stationary state approximation [31], this momentum conservation implies that the electron cloud should be endowed with inertia which keeps it moving on with its original velocity when its binding particle-system changes. Pictorially the effect of this inertia can be seen in contour plots of electronic charge distributions as a function of time for protonhydrogen collisions [32,33]. Though the authors who calculated these density distributions related the elongation of the final distributions into the direction of the collision partner to its "dragging" [32] or "attractive" [33] residual Coulomb force, we believe that the asymmetry is more correctly ascribed to the inertia of the electron cloud.…”

Section: Discussion Of the Excitation Processmentioning

confidence: 87%

Analysis of impact-excited HeI states by applying magnetic and electric depolarization techniques

Aynacioglu

Meissner

Walachowicz

et al. 1991

Z Phys D - Atoms, Molecules and Clusters

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Abstract. The magnetic depolarization of the impact radiation at 2(41D-2tP)=492nm and 2(31D-2~P) = 668 nm as well as the splitting of the magnetic depolarisation signals in electric fields were investigated for t0-25 keV H~-(D~-)-He collisions (only 492 nm line) and for 5-22.5 keV He-He collisions (both lines). The results are compared with analogous measurements for He + -He and Ne + -He collisions and the dynamics of the excitation process are qualitatively discussed. In particular, we emphasize the importance of inertia for the evolution of the electron cloud during the final phase of the collision process.

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Section: Discussion Of the Excitation Processmentioning

confidence: 87%

Analysis of impact-excited HeI states by applying magnetic and electric depolarization techniques

Aynacioglu

Meissner

Walachowicz

et al. 1991

Z Phys D - Atoms, Molecules and Clusters

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“…This will improve the accuracy of the cross-section, since the contribution of the continuum states of the target is taken into account. Figure 1 represents our theoretical results (Schw66) of the total cross-section for the excitation of the 2s state of the hydrogen atom by proton impact, compared to experimental results (Higgins et al [4]) and other theoretical results (Schw55, Schw1414, Born1, Shakeshaft [5], Ford et al [6] and Slim [7]). …”

Section: Resultsmentioning

confidence: 99%

Theoretical Study of Atomic Excitation by Impact of Protons in the Variational Formalism

Benmansour

Bouamoud²,

Sahlaoui

2016

Acta Phys. Pol. A

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Schwinger's variational principle is used to evaluate excitation cross-sections of hydrogen atom by proton impact in a range of energies excluding a pertubative treatment. To describe the strong coupling between the excitation and the capture channels that exists at low energies, the continuum states have been introduced in the total wave function. Our results show that these states can describe properly the projectile capture states.

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“…For instance using polarized protons in the experimental set up of Hippler et al [-11], all the state multipoles characteristing the resulting H(2p)* state can be found from (16). Note that the orientation vector (r(1)~-l) , (r(1)x,_ 1), (r(1)~-o) =0 cannot be extracted from experiment without measurement of polarizations of Lyman-c~ radiation are done and compared with the relevant theoretical predictions [13] in Figs. 2, 3, they may prove to be a sensitive test for the various approximation schemes applied.…”

Section: Discussionmentioning

confidence: 99%

Alignment and orientation of charge exchange excitation with polarized projectiles

Khalid

Kleinpoppen

1983

Z Physik A

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The alignment and orientation of hydrogenlike excited atoms produced by electron capture in collisions of spin polarized bare atomic nuclei with atomic targets is described in terms of Stokes parameters. The H(2p)* excited state formed by spin polarized protons making charge exchange collisions on atomic targets is dealt with extensively for the purpose of illustration. The linear polarization and circular polarization of resulting Lyman-c~ when polarized protons make electron capture collision on atomic hydrogen target are plotted to compare observable aspects of different theories of electron capture.

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Coupled-state calculations of proton—hydrogen-atom scattering using a scaled hydrogenic basis set

Cited by 226 publications

References 15 publications

Analysis of impact-excited HeI states by applying magnetic and electric depolarization techniques

Analysis of impact-excited HeI states by applying magnetic and electric depolarization techniques

Theoretical Study of Atomic Excitation by Impact of Protons in the Variational Formalism

Alignment and orientation of charge exchange excitation with polarized projectiles

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