Dissociation and Charge Transfer of CO21+ and CO22+ Ions in Collisions with Neutral Atoms and Molecules

1977 ◽  
Vol 32 (6) ◽  
pp. 555-557 ◽  
Author(s):  
A. Müller ◽  
E. Salzborn
Keyword(s):  
Charge Transfer ◽  
Electron Capture ◽  
Cross Section ◽  
Cross Sections ◽  
Impact Energy ◽  
Linear Dependence ◽  
Hard Sphere ◽  
Single Electron Capture ◽  
Target Particle ◽  
Total Collision

AbstractCross sections for single electron capture by CO22+ ions as well as total collision cross sections σi,tot (i=1, 2) for CO21+ and CO22+ ions in He, Ne, Ar, Kr, Xe, H2, O2, N2, CH4 and CO2 gases have been measured at 10 keV impact energy. σ2,1 varies between 4.5·10-17cm2 for the He and 1.8·10·15cm2 for the CO, target. On the average, σ2,1,tot is 1.6 times larger than σ1,tot and shows a nearly linear dependence on the gaskinetic hard sphere cross section of the target particle. The largest observed value of σ2,tot is 9.4·10-15cm2 for the CO2 target.

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.

scholarly journals Процессы захвата и диссоциативного захвата одного электрона при взаимодействии двухзарядных ионов с молекулами CO

2019 ◽  
Vol 89 (8) ◽  
pp. 1164
Author(s):  
А.А. Басалаев ◽  
В.В. Кузьмичев ◽  
М.Н. Панов ◽  
О.В. Смирнов
Keyword(s):  
Electron Capture ◽  
Cross Section ◽  
Cross Sections ◽  
Single Electron ◽  
Qualitative Explanation ◽  
Single Electron Capture ◽  
The Cross

AbstractThe absolute cross sections of single-electron capture and single-electron capture with dissociation in the interaction between incident He^2+, C^2+, N^2+, and O^2+ ions with energies from 6.4 to 36.4 keV and СО molecules were measured. It is demonstrated that the cross section of dissociative capture is much larger than the cross section of single-electron capture for O^2+ projectile ions. A qualitative explanation for this effect is provided.

Single electron capture cross sections of the 2P3/2 and 2P1/2 state argon and krypton ions

1968 ◽  
Vol 46 (21) ◽  
pp. 2339-2345 ◽  
Author(s):  
J. F. Williams
Keyword(s):  
Electron Capture ◽  
Cross Section ◽  
Cross Sections ◽  
Ionization Probability ◽  
Reaction Cross ◽  
Single Electron ◽  
Capture Cross ◽  
Average Electron Energy ◽  
Single Electron Capture ◽  
Capture Cross Sections

The ionization probability curves of argon and krypton atoms within 1 eV of threshold have been studied for electron impact with an average electron energy distribution of 0.035 eV (FWHM). In krypton, changes in the slope of the ionization probability curves occur at electron energies close to the spectroscopically observed autoionization levels between the 2P3/2 and 2P1/2 levels. Ions which have been formed in such a manner are then used as primary ions in charge-transfer reactions. Total single electron capture cross sections have been measured for 2P3/2 and 2P1/2 state argon and krypton ions incident upon argon and krypton atoms, respectively. Upon the presumption of the applicability of the adiabatic hypothesis, it appears, for single electron capture reactions of krypton ions upon krypton atoms over the relative energy range 500–1500 eV, that (a) the reaction 2P3/2 → 2P3/2 is dominant over the reaction 2P3/2 → 2P1/2, (b) the cross section for the 2P3/2 → 2P3/2 reaction is greater than the 2P1/2 → 2P1/2 reaction cross section, and (c) little information can be deduced for the relative values of the forward and reverse [Formula: see text] reaction cross sections.

Absolute cross sections for D2 Lyman and Werner band excitation by controlled electron impact

1984 ◽  
Vol 62 (1) ◽  
pp. 1-9 ◽  
Author(s):  
K. Becker ◽  
J. W. McConkey
Keyword(s):  
Energy Range ◽  
Electron Impact ◽  
Cross Section ◽  
Cross Sections ◽  
Impact Energy ◽  
Emission Cross Section ◽  
Direct Excitation ◽  
The Cross ◽  
Impact Energies

We have studied the Lyman [Formula: see text] and Werner [Formula: see text] band emissions produced by 20–500-eV electrons incident on molecular deuterium, D2. Emission cross sections of (3.7 ± 0.9) × 10−17 cm2 for the B → X and (3.54 ± 0.74) × 10−17 cm2 for the C → X system have been determined at 100-eV impact energy. Cascading did not play an important role in the [Formula: see text] emission, but it was shown to affect the [Formula: see text] emission seriously, particularly for impact energies below 50 eV. We estimate the cross section for direct excitation of the [Formula: see text] state and the cascade cross section to be 2.95 × 10−17 and 0.75 × 10−17 cm2, at 100 eV respectively. The cascade cross section is 20 ± 10% of the total B → X emission cross section, and is essentially constant in the energy range 300–50 eV, but increases significantly for lower impact energies, e.g., to 40 ± 15% at 27.5 eV. The cross section for the atomic 2p → 1s Lyman α emission from D2 has also been measured and the value of 1.00 × 10−17 cm2 at 100 eV is 20% smaller than the cross section for Lyman α emission from H2.

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