Internuclear interaction on fully differential cross-sections for single ionization of helium by proton impact

Duan, Yarui; Sun, Shiyan; Jia, Xiaofang

doi:10.1209/0295-5075/110/13001

Cited by 9 publications

(15 citation statements)

References 20 publications

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“…Similar conclusions were obtained in Ref. [15] in the modified Coulomb-Born approximation, where NN was also included (MCB-PI). Recently, within the framework of a Born-like approximation a continuum correlated wave (CCW) function has been applied for the final sate [16].…”

Section: Comparison To and Discussion Of Other Studiessupporting

confidence: 89%

“…Dot dashed lines: 3C calculations [14]. Dot dot dashed lines: MCB-PI calculations [15]. Experiment: • from Ref.…”

Section: Comparison To and Discussion Of Other Studiesmentioning

confidence: 99%

“…Recently, Schultz et al [12] measured the FDCS for single ionization of Helium by 75-keV proton impact. Their experimental results were compared to data of various distorted wave calculations, including the continuum-distorted wave with eikonal initial state (CDW-EIS) approximation [13][14][15][16]. The important role of interaction between the nuclei has been observed, and reasonably accounts of the measured FDCS were reported mostly in the collisions plane.…”

Section: Introductionmentioning

confidence: 99%

“…Applying independent electron and impact parameter pictures, the one-electron transition amplitudes are evaluated in the CDW-EIS model, where the role of nucleusnucleus interaction (NN) is taken into account by a phase factor. The importance of including the NN interaction in the treatments was emphasized in previous studies [13][14][15][16]. However, in these studies the effects of nonactive electron, the role of the He + core, were considered by a Coulomb potentials with effective charge.…”

Section: Introductionmentioning

confidence: 99%

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Theoretical investigation of the fully differential cross sections for single ionization of He in collisions with 75-keV protons

2019

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We present a theoretical investigation of the single ionization of He in collisions with H + projectile ions at 75-keV impact energy. Using the frameworks of the independent-electron model and the impact parameter picture, fully differential cross sections (FDCS) are evaluated in the continuum distorted-wave with eikonal initial-state approximation (CDW-EIS). Comparisons are made to the recent measurements of Schulz et al. [Phys. Rev. A 73, 062704 (2006)] and Arthanayaka et al. [J. Phys. B: At. Mol. Opt. Phys. 49, 13LT02 (2016)]. Strong influence of the internuclear interaction and effects of target core polarization due to the presence of the projectile ion are observed. Comparing the present results to experimental data and other theoretical predictions, it has been found that the CDW-EIS method qualitatively reproduces structures in the FDCS. Projectile coherence effects are investigated by representing the projectile beam as a Gaussian wave packet. Evidence of interference effects due to projectile-electron and projectile-target core interactions are discussed and the need for further theoretical investigations is proposed.

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Section: Comparison To and Discussion Of Other Studiessupporting

confidence: 89%

“…Dot dashed lines: 3C calculations [14]. Dot dot dashed lines: MCB-PI calculations [15]. Experiment: • from Ref.…”

Section: Comparison To and Discussion Of Other Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Theoretical investigation of the fully differential cross sections for single ionization of He in collisions with 75-keV protons

2019

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“…It should be noted that the PT interaction in the final state was not considered in the above mentioned calculations. In fact, it has been shown that the interaction between the projectile and the target ion, at intermediate impact energies, [8][9][10]20,21] has a large influence depending on the ejected electron energies and momentum transfer values. It is necessary to include the PT interaction at the level of multiple differential cross sections.…”

Section: Introductionmentioning

confidence: 99%

Double differential cross sections for ionization of H by 75 keV proton impact: Assessing the role of correlated wave functions*

Fan¹,

Miao²,

Jia³

2020

Chinese Phys. B

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The effect of final-state dynamic correlation is investigated for ionization of atomic hydrogen by 75-keV proton impact by analyzing double differential cross sections. The final state is represented by a continuum correlated wave (CCW-PT) function which accounts for the interaction between the projectile and the target nucleus (PT interaction). The correlated final state is nonseparable solutions of the wave equation combining the dynamics of the electron motion relative to the target and projectile, satisfying the Redmond’s asymptotic conditions corresponding to long range interactions. The transition matrix is evaluated using the CCW-PT function and the undistorted initial state. Both the correlation effects and the PT interaction are analyzed by the present calculations. The convergence of the continuous correlated final state is examined carefully. Our results are compared with the absolute experimental data measured by Laforge et al. [Phys. Rev. Lett. 103, 053201 (2009)] and Schulz et al. [Phys. Rev. A 81, 052705 (2010)], as well as other theoretical models (especially the results of the latest non perturbation theory). We have shown that the dynamic correlation plays an important role in the ionization of atomic hydrogen by proton impact. While overall agreement between theory and the experimental data is encouraging, detailed agreement is still lacking. However, such an analysis is meaningful because it provides valuable information about the dynamical correlation and PT interaction in the CCW-PT theoretical model.

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Dynamic correlation effects in fully differential cross sections for 75-keV proton-impact ionization of helium

et al. 2017

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Internuclear interaction on fully differential cross-sections for single ionization of helium by proton impact

Cited by 9 publications

References 20 publications

Theoretical investigation of the fully differential cross sections for single ionization of He in collisions with 75-keV protons

Theoretical investigation of the fully differential cross sections for single ionization of He in collisions with 75-keV protons

Double differential cross sections for ionization of H by 75 keV proton impact: Assessing the role of correlated wave functions*

Dynamic correlation effects in fully differential cross sections for 75-keV proton-impact ionization of helium

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