Collisional electron detachment and decomposition cross sections for SF−6, SF−5, and F− on SF6 and rare gas targets

1989 ◽  
Vol 91 (4) ◽  
pp. 2254-2260 ◽  
Author(s):  
Yicheng Wang ◽  
R. L. Champion ◽  
L. D. Doverspike ◽  
J. K. Olthoff ◽  
R. J. Van Brunt
Keyword(s):  
Cross Sections ◽  
Rare Gas ◽  
Electron Detachment ◽  
Gas Targets

Positive ion production in single collisions of Cl− with rare gas atoms

1984 ◽  
Vol 62 (6) ◽  
pp. 544-547 ◽  
Author(s):  
B. Hird ◽  
F. Rahman
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Rare Gas ◽  
Electron Detachment ◽  
Centre Of Mass ◽  
Target Mass ◽  
Double Electron ◽  
Ion Production ◽  
Rare Gas Atoms ◽  
Positive Ion

The cross section σ−+ for double electron detachment from Cl− in a single collision with a rare gas atom has been measured between 12.5 and 122.5 keV. The magnitude of these cross sections shows that there is a good probability that a second electron will be emitted in collisions that detach one electron, particularly with light targets. The centre-of-mass cross section decreases with increasing target mass, but the variation is less than that for F− and O− double electron detachment cross sections.

Detachment cross sections for sulphur negative ion – rare gas collisions

1987 ◽  
Vol 65 (7) ◽  
pp. 735-738 ◽  
Author(s):  
B. Hird ◽  
M. Bruyère ◽  
S. Fafard
Keyword(s):  
Cross Sections ◽  
Negative Ions ◽  
Negative Ion ◽  
Rare Gas ◽  
Electron Detachment ◽  
Double Electron

The atomic cross sections for single and double electron detachment from sulphur negative ions in single collisions with He, Ne, Ar, Kr, and Xe are determined at collision energies between 12.5 and 110 keV.

Net ionisation cross sections of rare gas targets in collisions with swift highly charged ions

1993 ◽  
Vol 126 (1-4) ◽  
pp. 21-24 ◽  
Author(s):  
A. Cassimi ◽  
J. P. Grandin ◽  
L. H. Zhang ◽  
A. Gosselin ◽  
D. Hennecart ◽  
...  
Keyword(s):  
Cross Sections ◽  
Highly Charged Ions ◽  
Rare Gas ◽  
Gas Targets ◽  
Charged Ions

Cross sections for phosphorous negative-ion detachment in collisions with rare gas atoms

1988 ◽  
Vol 66 (9) ◽  
pp. 810-812 ◽  
Author(s):  
B. Hird ◽  
M. Bruyère ◽  
S. Fafard ◽  
M. W. Orakzai
Keyword(s):  
Cross Sections ◽  
Negative Ion ◽  
Rare Gas ◽  
Electron Detachment ◽  
Double Electron ◽  
Rare Gas Atoms

Atomic cross sections for single and double electron detachment from P− in collisions with rare-gas atoms are reported at laboratory collision energies between 13 and 113 keV.

Electron capture and loss by fast fluorine atoms in collisions with rare gas targets

1988 ◽  
Vol 66 (11) ◽  
pp. 972-977 ◽  
Author(s):  
B. Hird ◽  
F. Rahman ◽  
M. W. Orakzai
Keyword(s):  
Cross Sections ◽  
Rare Gas ◽  
Rare Gases ◽  
Single Atoms ◽  
Positive Ions ◽  
Electron Transfer Theory ◽  
The Cross ◽  
Fluorine Ions ◽  
Gas Targets ◽  
Pass Through

Cross sections are reported for the production of fast negative fluorine ions in collisions between a neutral fluorine beam and single atoms of each of the rare gases, at collision energies between 20 and 110 keV. The energies at which the cross sections pass through a maximum fit very well with the Massey criterion, assuming a simple electron-transfer theory. The cross sections for the production of fast fluorine positive ions are also reported. These are found to be smallest for the heavy targets and reach a maximum in helium and neon, which have higher ionization potentials than fluorine.

Electron transfer measurements from rare gas targets to O12+ ions between 60 and 200 keV

1980 ◽  
Vol 58 (6) ◽  
pp. 772-778 ◽  
Author(s):  
B. Hird ◽  
S. P. Ali
Keyword(s):  
Cross Sections ◽  
Spin Symmetry ◽  
Rare Gas ◽  
Final States ◽  
Rare Gases ◽  
Product Ions ◽  
The Cross ◽  
Gas Targets ◽  
Crossing Theory ◽  
Relative Weighting

Charge exchange measurements in thin targets of the rare gases by an O2+ beam have been made between 60 and 200 keV. Taking into account the relative weighting of the final states which are allowed assuming spin, symmetry, and Λ conservation it was found that a crossing theory of the Landau–Zener type is completely inadequate to account for the cross sections of the heavier targets, whereas a non-crossing theory in the Rapp–Francis formulation was found to give good fits, both in energy dependence and overall magnitude, to the cross sections except for the xenon target where it is too small by a factor of 2. The improvement in fit is due to the inclusion of a factor which was omitted in the original formulation of Rapp–Francis, and also the inclusion of many states of the product ions in the calculation.

Charge exchange cross sections of argon ions colliding with rare gas targets at keV energies

1981 ◽  
Vol 42 (10) ◽  
pp. 1387-1391 ◽  
Author(s):  
S. Bliman ◽  
S. Dousson ◽  
B. Jacquot ◽  
D. Van Houtte
Keyword(s):  
Charge Exchange ◽  
Cross Sections ◽  
Rare Gas ◽  
Argon Ions ◽  
Gas Targets

Further investigations of charge exchange and electron detachment - I. Ion energies 3 to 40 keV - II. Ion energies 100 to 4000 eV

1955 ◽  
Vol 227 (1171) ◽  
pp. 466-486 ◽  
Keyword(s):  
Charge Transfer ◽  
Energy Range ◽  
Cross Sections ◽  
Atomic Hydrogen ◽  
Molecular Hydrogen ◽  
Hydrogen Ions ◽  
Electron Detachment ◽  
Rare Gases ◽  
Helium Ions ◽  
Ion Energies

This paper describes the measurement of charge transfer cross-sections for protons, molecular hydrogen ions and helium ions in the rare gases and hydrogen, and electron detachment cross-sections for negative atomic hydrogen ions in the rare gases. Part I describes the energy range 3 to 40 keV. In part II the energy range 100 to 4000 eV is described, and the results are discussed in terms of the pseudo-adiabatic hypothesis. Comparisons are made with other experimental results, and anomalous molecular cases are discussed in terms of reactions involving anti-bonding states.

Sign in / Sign up

Export Citation Format

Share Document