scholarly journals Single-electron capture in ion-ion collisions

2020 ◽  
Vol 18 (2) ◽  
pp. 131-139
Author(s):  
Danilo Delibasic ◽  
Nenad Milojevic ◽  
Ivan Mancev
Keyword(s):  
Electron Capture ◽  
Cross Sections ◽  
Scaling Law ◽  
Single Electron ◽  
Final States ◽  
Total Cross Sections ◽  
Ion Collisions ◽  
Single Electron Capture ◽  
Body Boundary ◽  
Three Body

The prior versions of the three-body boundary-corrected first Born approximation (CB1-3B) and the three-body boundary-corrected continuum intermediate states method (BCIS-3B) are applied to calculate the state-selective and state-summed total cross sections for single-electron capture from hydrogen-like ion targets (He+, Li2+) by fast completely stripped projectiles (H+, He2+, Li3+). All calculations are carried out for single-electron capture into arbitrary n l m final states of the projectiles, up to n = 4. The contributions from higher n shells are included using the Oppenheimer n?3 scaling law. The present results are found to be in satisfactory agreement with the available experimental data.

scholarly journals Single electron capture into arbitrary states of bare projectiles from multi-electron targets

2018 ◽  
Vol 16 (2) ◽  
pp. 239-247
Author(s):  
Nenad Milojevic ◽  
Ivan Mancev
Keyword(s):  
Electron Capture ◽  
Cross Sections ◽  
Single Electron ◽  
Final States ◽  
Total Cross Sections ◽  
Single Electron Capture ◽  
Body Boundary ◽  
Impact Energies ◽  
Good Agreement ◽  
Prior Form

The prior form of four-body boundary-corrected first Born (CB1-4B) method is applied to calculate the total cross sections for single electron capture from the Kshell of multi-electron atoms (C, N, O, Ar) by fast projectiles (H+, He2+and Li3+). All calculations are carried out for electron capture into the arbitrary n, l, and m final states of the projectiles. The present results are found to be in very good agreement with the available experimental data at intermediate and high impact energies.

K-shell single-electron capture in collision of fast protons with multi-electron atoms

Open Physics ◽  
2013 ◽  
Vol 11 (4) ◽  
Author(s):  
Ebrahim Ghanbari-Adivi ◽  
Azimeh Velayati
Keyword(s):  
Electron Capture ◽  
Cross Sections ◽  
Bound State ◽  
Single Electron ◽  
Hartree Fock ◽  
High Energies ◽  
Single Electron Capture ◽  
Coulomb Boundary Conditions ◽  
Three Body ◽  
Fast Protons

AbstractSingle-electron capture from the K shell of atomic targets by impact of protons at moderate and high energies has been studied using a first-order three-body Coulomb-Born continuum distorted wave approximation. The applied formalism satisfies the correct Coulomb boundary conditions. Single-zeta Roothaan-Hartree-Fock wave functions are used to describe the initial electronic bound state of the exchanged electron. Both differential and integral capture cross sections are calculated for impact of protons on carbon, nitrogen, oxygen, neon and argon atoms. The results are compared with the available measurements and other theories. The agreement between the calculations and experimental data is remarkable.

EXPERIMENTAL STUDY OF SINGLE-ELECTRON-CAPTURE CROSS SECTIONS BY LOW-ENERGY $N^+_2$ AND N+ IONS IN N2 MOLECULAR GAS

2002 ◽  
Vol 11 (06) ◽  
pp. 567-572 ◽  
Author(s):  
A. T. HASAN ◽  
T. J. GRAY
Keyword(s):  
Electron Capture ◽  
Cross Section ◽  
Cross Sections ◽  
Theoretical Calculations ◽  
Experimental Results ◽  
Single Electron ◽  
Molecular Gas ◽  
Total Cross Sections ◽  
Single Electron Capture ◽  
Capture Cross Sections

Absolute total cross sections for single-electron-capture are measured for [Formula: see text] and N+ ions traversing N2 molecular gas of collision energies in the range of 0.60 to 1.5 keV. These cross sections are found to be in the range of 3.97 - 6.25 Å2 for [Formula: see text] ions, and in the range of 0.46 - 1.67 Å2 for N+ ions. A comparison is made between the present measurements of the total cross sections of the N+ + N2 system and all the experimental results, which are represented by B. G. Lindsay et al.,1 for the O+ + N2 system. The present measurements of the total cross section of the N+ + N2 system are in partial agreement with measurements of B. G. Lindsay et al.,1 and in an excellent agreement with the measurements of Moran et al.,2 The present measurements of the total cross sections of the [Formula: see text] system are compared to the theoretical calculations and the experimental results of the same system.23 The results are in disagreement with each other.

Single electron capture by Ar2+ in Ne, Ar, and Kr gases

1977 ◽  
Vol 55 (18) ◽  
pp. 1594-1600 ◽  
Author(s):  
H. C. Suk ◽  
A. Guilbaud ◽  
B. Hird
Keyword(s):  
Electron Capture ◽  
Cross Sections ◽  
Detection System ◽  
State Theory ◽  
Single Electron ◽  
Final States ◽  
Single Electron Capture ◽  
The Cross ◽  
Singly Charged ◽  
Capture Cross Sections

Measurements of single electron capture cross sections by Ar2+ ions in thin targets of neon, argon, and krypton have been made with an absolute accuracy of about 5%. The detection system was constructed so as to have a uniform efficiency over the range of angles and energies at which the singly charged Ar+ ions were produced in the charge exchange. Discrepancies with the extrapolated absolute values of previous measurements were found, but the energy variations of the cross section are in much better agreement. It seems possible to account for the energy variation of the cross sections with the two state theory when it is assumed that the ions of both the initial and the final states are all in their ground states.

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