Differential and total cross sections for charge transfer and transfer-excitation in ion-helium collisions

Halder, S.; Mondal, Anup; Samaddar, S.; Mandal, Chittaranjan; Purkait, M.

doi:10.1103/physreva.96.032717

Cited by 5 publications

(6 citation statements)

References 72 publications

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“…The two experimental data are in good agreement at 50 and 75 keV. Figure 8 also includes the theoretical DCSs of TC-BGM in IEM [63] (25, 50, and 75 keV), and those of the four-body model of final channel distorted-wave (FC-DW-4B) approximation of Halder et al [61] (50, 75, and 100 keV). As for the final target states for TE, He + (n = 2-4) were considered in TC-BGM, and He + (n = 2) in FC-DW-4B.…”

Section: Resultsmentioning

confidence: 60%

Differential cross sections for projectile scattering angle in proton-helium collision at intermediate energies

Igarashi

Kato

2023

Phys. Scr.

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The collisions between proton and helium are treated with a semi-classical atomic orbital expansion for proton incident energies 5-150 keV considering twoelectrons explicitly. Diﬀerential cross sections with respect to the projectile scattering angle are calculated for elastic scattering, 21S and 21P excitation, single electron capture, and single ionization. The agreement with experiments are mostly good, but non-negligible discrepancies are seen for the elastic scattering and the single electron capture with target excitation.

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Section: Resultsmentioning

confidence: 60%

Differential cross sections for projectile scattering angle in proton-helium collision at intermediate energies

Igarashi

Kato

2023

Phys. Scr.

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“…Some general trends can be observed. As projectile velocity increases, the magnitude of the FDCS decreases, as is expected from the total cross sections, which decrease with increasing projectile energy [15]. Also, as projectile charge and mass increase, the FDCS increase in magnitude, making capture more likely for heavier and more highly charged ions.…”

Section: Resultsmentioning

confidence: 76%

“…Thanks to computational advances, there are now many 4-body models in use for the single capture process [2,[14][15][16][17][18][19][20][21][22][23][24] with varying degrees of agreement between each other and experiment. Combined with the numerous 3-body models present in the literature, there is no shortage of calculations for the single capture process.…”

Section: Introductionmentioning

confidence: 99%

Frozen Core Approximation and Nuclear Screening Effects in Single Electron Capture Collisions

Harris

2019

Atoms

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Fully Differential Cross Sections (FDCS) for single electron capture from helium by heavy ion impact are calculated using a frozen core 3-Body model and an active electron 4-Body model within the first Born approximation. FDCS are presented for H + , He 2+ , Li 3+ , and C 6+ projectiles with velocities of 100 keV/amu, 1 MeV/amu, and 10 MeV/amu. In general, the FDCS from the two models are found to differ by about one order of magnitude with the active electron 4-Body model showing better agreement with experiment. Comparison of the models reveals two possible sources of the magnitude difference: the inactive electron's change of state and the projectile-target Coulomb interaction used in the different models. Detailed analysis indicatesthat the uncaptured electron's change of state can safely be neglected in the frozen core approximation, but that care must be used in modeling the projectile-target interaction.

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“…In the case of the TI process, its probability is the sum of all the terms in the expansion of expression (13) that contain the products To calculate the of single capture and single ionization the same routine is used, as in the TI calculation. For the cases in rows 3-6 of the equation (10), instead of eight electrons, seven active electrons were considered.…”

Section: Discussionmentioning

confidence: 99%

“…To put the present work in context, some ideas and advances that have been carried out along this line of research [3][4][5][6][7][8][9][10] will be mentioned here, mainly related to the transfer ionization process from helium targets that are relevant and guide the collision process studied in the present work.…”

Section: Introductionmentioning

confidence: 99%

Electron emission from transfer ionization reaction in 30 keV amu⁻¹ He ²⁺ on Ar collision

Amaya-Tapia¹,

Antillón²,

Estrada³

2018

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

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A model is presented that describes the transfer ionization process in + + He Ar 2 collision at a projectile energy of 30 keV amu −1 . It is based on a semiclassical independent-particle closecoupling method that yields a reasonable agreement between calculated and experimental values of the total single-ionization and single-capture cross sections. It is found that the transfer ionization reaction is predominantly carried out through simultaneous capture and ionization, rather than by sequential processes. The transfer-ionization differential cross section in energy that is obtained satisfactorily reproduces the global behavior of the experimental data. Additionally, the probabilities of capture and ionization as function of the impact parameter for + + + He Ar2 and + + + HeAr collisions are calculated, as far as we know, for the first time. The results suggest that the model captures essential elements that describe the two-electron transfer ionization process and could be applied to systems and processes of two electrons.

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Differential and total cross sections for charge transfer and transfer-excitation in ion-helium collisions

Cited by 5 publications

References 72 publications

Differential cross sections for projectile scattering angle in proton-helium collision at intermediate energies

Differential cross sections for projectile scattering angle in proton-helium collision at intermediate energies

Frozen Core Approximation and Nuclear Screening Effects in Single Electron Capture Collisions

Electron emission from transfer ionization reaction in 30 keV amu⁻¹ He ²⁺ on Ar collision

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Differential and total cross sections for charge transfer and transfer-excitation in ion-helium collisions

Cited by 5 publications

References 72 publications

Differential cross sections for projectile scattering angle in proton-helium collision at intermediate energies

Differential cross sections for projectile scattering angle in proton-helium collision at intermediate energies

Frozen Core Approximation and Nuclear Screening Effects in Single Electron Capture Collisions

Electron emission from transfer ionization reaction in 30 keV amu−1 He 2+ on Ar collision

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Electron emission from transfer ionization reaction in 30 keV amu⁻¹ He ²⁺ on Ar collision