Total cross sections in five methods for two-electron capture by alpha particles from helium: CDW-4B, BDW-4B, BCIS-4B, CDW-EIS-4B and CB1-4B

Belkić, Dževad

doi:10.1007/s10910-020-01123-4

Cited by 9 publications

(2 citation statements)

References 84 publications

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“…The continuum-distorted-wave-eikonal-initial-state (CDW-EIS) approximation was used by Fainstein et al 10 to study the differential cross-section in the interaction between helium atom and bare projectiles. The CDW-EIS is a simplification of the CDW method 11 , while the CDW method uses full electronic Coulomb wavefunction, the CDW-EIS method uses the asymptotic behaviour of the mentioned wavefunction (i.e., the logarithmic Coulomb phase) 12 . The results of Fainstein et al 10 had a slight disagreement with the experimental data at certain ejection angle.…”

Section: Introductionmentioning

confidence: 99%

Total and differential ionization cross sections in collision between nitrogen atom and singly charged sodium ion

Al-Ajaleen,

Tőkési

2023

Sci Rep

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We present a theoretical study of the ionization of nitrogen atom by a singly charged sodium ion using the classical trajectory Monte Carlo method. Although we suffer from a lack of cross section data of this collision system, the knowledge of the basic cross sections is essential in fusion science, because this reaction has potential applications in the diagnostic of magnetically confined fusion plasmas. In our investigations, the Na+–N collision system is reduced to a three-body problem. The interaction between the collision partners is described by the Garvey-type model potential. The results of our study provide insight into the dynamics of singly charged sodium–nitrogen interactions. The total cross sections are presented in the impact energy range between 10 keV and 10 MeV and compared them with the available experimental data. The single and double differential cross sections are presented at 30, 40, 50 and 60 keV energies related to the energies of the plasma diagnostic used in the nuclear fusion.

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Section: Introductionmentioning

confidence: 99%

Total and differential ionization cross sections in collision between nitrogen atom and singly charged sodium ion

Al-Ajaleen,

Tőkési

2023

Sci Rep

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“…Due to the rapid development of computing technology in the recent twenty years, the increasing interest of physics-theorists is paying attention to atomic collisions, in particular, one-and two-electron processes in the field of intermediate and high energies [1][2][3][4][5][6][7]. The choice of two-electron processes as a research object is also conditioned by the importance of multidisciplinary applications of high-energy ion-atom collisions, ranging from fusion to medical accelerators for radiotherapy [8,9].…”

Section: Introductionmentioning

confidence: 99%

Four-particle formalism of the CDW method in two-electron charge-exchange reactions

Lazur¹,

Aleksiy²,

Myhalyna³

et al. 2020

SPQEO

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The progress in solution of problems involving non-relativistic fast ion-atom collisions with two actively participating electrons has been reviewed. Leading quantum mechanical methods have been analyzed in the framework of four-body scattering theory. A simple formalism has been described on the basis of the Dodd-Greider integral equations for a four-particle system, which were used to analyze the two-electron charge-exchange process at medium and high velocities of relative motion of particles. An important feature of the developed four-particle continuum distorted waves (CDW) method is the consistent preservation of the proper asymptotic limits of the wave functions of a colliding system in the entrance and exit channels of the reaction, which takes into account the long-range nature of Coulomb interactions. The amplitude of the two-electron charge-exchange reaction has been calculated in the approximation of the mechanism of simultaneous capture by an incident particle of two target electrons. The calculations using the presented theory have been made on the example of a two-electron capture reaction in high-energy He 2+ +He collisions.

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High-energy two-electron transfer in ion-atom collisions

Belkić

2022

J Math Chem

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Two-electron transfer by fast heavy nuclei from heliumlike targets is studied. A detailed sequence of comprehensive computations is carried out in a large keV–MeV range of the projectile energies. This set is illustrated with total cross sections for double capture by alpha particles from helium atoms using several frequently applied four-body quantum-mechanical distorted wave models with the correct boundary conditions. The sensitivity of the obtained total cross sections is examined for different choices of the bound and continuum states. Especially at high energies, the influence of the compactness of the bound states is investigated by reference to the mechanism of the velocity matching kinematic double electron capture. Also considered is the dependence of these cross sections on the electronic screening of the projectile and the target nuclear charges in the bound and continuum states. The impact of this electronic shielding on total cross sections is assessed by reference to the corresponding bare nuclear charges in the bound and continuum states. Relative to all the available experimental data (100–6000 keV), the found striking model-dependence implies that two-electron transfer is sharply different from the associated one-electron transfer involving the same colliding particles.

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Total cross sections in five methods for two-electron capture by alpha particles from helium: CDW-4B, BDW-4B, BCIS-4B, CDW-EIS-4B and CB1-4B

Cited by 9 publications

References 84 publications

Total and differential ionization cross sections in collision between nitrogen atom and singly charged sodium ion

Total and differential ionization cross sections in collision between nitrogen atom and singly charged sodium ion

Four-particle formalism of the CDW method in two-electron charge-exchange reactions

High-energy two-electron transfer in ion-atom collisions

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