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.

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.

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.

Experimental study on electron detachment cross sections of Cl– in collisions with inert gas atoms

2020 ◽  
Vol 98 (3) ◽  
pp. 287-290
Author(s):  
Mingmin Luo ◽  
Yujia Zhai ◽  
Guannan Guo ◽  
Xuemei Zhang
Keyword(s):  
Experimental Study ◽  
Growth Rate ◽  
Cross Sections ◽  
Negative Ions ◽  
Target Atom ◽  
Single Electron ◽  
Inert Gas ◽  
Electron Detachment ◽  
Double Electron ◽  
Rate Method

The single-electron and double-electron detachment cross sections of Cl– in collision with inert gas atoms (He–Xe) have been measured by the growth rate method. The incident negative ions’ energies are from 5 to 30 keV. It is found that the single-electron detachment cross sections become greater and greater when the target atoms change from helium to xenon. However, double-electron detachment cross sections show a more complicated relationship with the target atom changing. The results of this work have been compared with the previous data, and a model based on energy division is used to interpret the trends of cross sections.

Theory of electron detachment in collisions of negative ions with atoms II. Survival probability, differential elastic cross section, and total detachment cross section for the H - –He system

1982 ◽  
Vol 379 (1776) ◽  
pp. 209-216 ◽  
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Preceding Paper ◽  
Negative Ions ◽  
Elastic Cross Section ◽  
Negative Ion ◽  
Total Probability ◽  
Electron Detachment ◽  
Close Coupling ◽  
Probability Of Survival

The close-coupling theory of electron detachment, developed in the preceding paper I, is used to calculate the probability of survival of the negative ion, and the total probability of electron detachment. Neglect of a term reduces the formulas to more familiar ones, which are then used to calculate differential elastic cross sections and total detachment cross sections for the H - –He and D - –He systems. Good agreement with experi­mental results is obtained.

scholarly journals Fullerene Negative Ions: Formation and Catalysis

2020 ◽  
Author(s):  
Zineb Felfli ◽  
Kelvin Suggs ◽  
Nantambu Nicholas ◽  
Alfred Z. Msezane
Keyword(s):  
Transition State ◽  
Cross Sections ◽  
Water Oxidation ◽  
Regge Pole ◽  
Negative Ions ◽  
Negative Ion ◽  
Total Cross Sections ◽  
Hydrogen Bond Strength ◽  
Low Energy Electron ◽  
Fundamental Mechanism

We first explore negative-ion formation in fullerenes C44, C60, C70, C98, C112, C120, C132 and C136 through low-energy electron elastic scattering total cross sections calculations using our Regge-pole methodology. Water oxidation to peroxide and water synthesis from H2 and O2 are then investigated using the anionic catalysts C44ˉ to C136ˉ. The fundamental mechanism underlying negative-ion catalysis involves hydrogen bond strength-weakening in the transition state. DFT transition state calculations found C60ˉ numerically stable for both water and peroxide synthesis, C100ˉ increases the energy barrier the most and C136ˉ the most effective catalyst in both water synthesis and oxidation to H2O2.

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

scholarly journals Role of Negative Ion Resonances in Electron Scattering from Atoms and Molecules

1999 ◽  
Vol 52 (3) ◽  
pp. 473 ◽  
Author(s):  
S. J. Buckman ◽  
D. T. Alle ◽  
M. J. Brennan ◽  
P. D. Burrow ◽  
J. C. Gibson ◽  
...  
Keyword(s):  
Electron Scattering ◽  
Cross Sections ◽  
Negative Ions ◽  
Negative Ion ◽  
Electron Correlations ◽  
Molecular Systems ◽  
Atoms And Molecules ◽  
Wide Range ◽  
Scattering Cross Sections

Transient negative ions (resonances) formed during the collision of an electron with an atom or molecule have been extensively studied for over thirty years. The continued interest in these states, both experimentally and theoretically, stems from the profound effects that they can have on electron scattering cross sections and the role that electron–electron correlations play in their formation and quasi-stability. A selective discussion of examples of such resonances, involving one, two and three excited electrons is given for a wide range of atomic and molecular systems.

Single-Electron Detachment Cross Sections for Transition-Element Negative Ions Ti   , Cr   , Cu   in Collision with N 2

2004 ◽  
Vol 21 (8) ◽  
pp. 1512-1514 ◽  
Author(s):  
Huang Yong-Yi ◽  
Zhang Xue-Mei ◽  
Wu Shi-Min ◽  
Li Guang-Wu ◽  
Lu Fu-Quan
Keyword(s):  
Cross Sections ◽  
Transition Element ◽  
Negative Ions ◽  
Single Electron ◽  
Electron Detachment
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