Kinetic Energy Dependence of Ion–Molecule Reactions Related to Plasma Chemistry

2000 ◽  
pp. 187-229 ◽  
Author(s):  
P.B. Armentrout
Keyword(s):  
Kinetic Energy ◽  
Energy Dependence ◽  
Plasma Chemistry ◽  
Ion Molecule Reactions

Kinetic energy dependence of the reactions of N+ and N2+ with molybdenum

1981 ◽  
Vol 77 (2) ◽  
pp. 403-404 ◽  
Author(s):  
David A. Baldwin ◽  
P.Terrence Murray ◽  
J.Wayne Rabalais
Keyword(s):  
Kinetic Energy ◽  
Energy Dependence

The Kinetic Energy Dependence of Association Reactions for Alkali Metal Ions with Dimethoxyethane

2017 ◽  
pp. 375-385
Author(s):  
Željka Nikitović ◽  
Martina Gilić ◽  
Milica Petrović ◽  
Nebojša Romčević ◽  
Zoran Raspopović ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Alkali Metal ◽  
Metal Ions ◽  
Energy Dependence ◽  
Alkali Metal Ions

Die Energieabhängigkeit der Chemie-Ionisations-Reaktion H(2S)+H2 → H3++e-

1969 ◽  
Vol 24 (8) ◽  
pp. 1227-1234 ◽  
Author(s):  
F.J. Comes ◽  
U Wenning
Keyword(s):  
Kinetic Energy ◽  
Energy Dependence ◽  
Cross Section ◽  
Reaction Cross Section ◽  
Reaction Cross ◽  
Hydrogen Atoms ◽  
Ionization Limit

Abstract The chemiionizaion in hydrogen is measured with the aid of the photodissociation of the H2-molecules. Only the reaction of hydrogen atoms is discussed in this paper. The atoms are produced by the photoabsorption of special wavelengths in the region between the dissociation and ionization limit thereby forming metastable 2S-atoms with a well defined kinetic energy. The energy dependence of the reaction cross section is determined which follows a ν-n -law, where n is found to be between 2 and 3 and ν is the velocity of the atoms.

Termolecular ion–molecule reactions involving C3H5+

1970 ◽  
Vol 48 (22) ◽  
pp. 3549-3553 ◽  
Author(s):  
A. G. Harrison ◽  
A. A. Herod
Keyword(s):  
Kinetic Energy ◽  
Molecular Size ◽  
Order Rate Constant ◽  
Second Order ◽  
Rate Coefficients ◽  
Third Order ◽  
Order Rate ◽  
Ion Molecule Reactions ◽  
Similar Dependence ◽  
Ion Kinetic Energy

The reaction of C3H5+ with C2D4 to produce C5H5D4+ is shown to be second order in C2D4. The rate coefficients are in the range 10−24 to 10−25 cm6 molecule−2 s−1 but decrease markedly with increasing ion kinetic energy. This decrease reflects the effect of the ion kinetic energy on the lifetime of the initial collision complex. Small differences in rate coefficients are observed depending on the source of the C3H5+ ion but these are insufficient to distinguish between possibly different ionic structures. The reaction of C3H5+ with C2H3F forms C5H7+ in a reaction second order in C2H3F. The rate coefficients are also in the range 10−24 to 10−25 cm6 molecule−1 s−1 and show a similar dependence on ion kinetic energy. These high third order rate constants are compared with data for other termolecular reactions and are shown to be consistent with the effect of molecular size on the third order rate constant.

Kinetic energy dependence of anisotropic yields of ionic fragmentations following S1s excitations of SO2

1998 ◽  
Vol 294 (6) ◽  
pp. 559-564 ◽  
Author(s):  
Jun-ichi Adachi ◽  
Yasutaka Takata ◽  
Nobuhiro Kosugi ◽  
Eiji Shigemasa ◽  
Akira Yagishita ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Energy Dependence

Spallation of 32S ions at ultra-relativistic energies in nuclear emulsion

2004 ◽  
Vol 82 (4) ◽  
pp. 263-275 ◽  
Author(s):  
M El-Nadi ◽  
A Abdelsalam ◽  
E A Shaat ◽  
N Ali Mossa ◽  
Z Abou Moussa ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Energy Dependence ◽  
Cross Sections ◽  
Nuclear Emulsion ◽  
Rest Frame ◽  
Production Cross ◽  
Combined Model ◽  
200 Gev ◽  
Nuclear Events ◽  
Good Agreement

Partial production cross sections of electromagnetic breakup of 32S projectiles at two widely differing energies were measured using an emulsion target. The electromagnetic dissociation represents about 6% and 17% of the total number of nuclear events at Elab/A = 3.7 and 200 GeV, respectively. The experimental electromagnetic cross sections σexpEMD show an energy dependence that is well reproduced by the Weizsacker–Williams approximation. The value of σexpEMD at 200A GeV (with γ >> 1) shows a good agreement with that predicted by the combined model of Pshenichnov et al. Examination of the reactions (γ, p) and (γ, He) reveals that the ratio of 1 p/1 He cross sections is close to unity at Dubna energy (3.7A GeV), while it rapidly increases to 3.0 ± 0.6 at CERN energy (200A GeV). In most of the observed dissociation modes, the total kinetic energy of the fragments in the projectile rest frame is lower than 50 MeV. Nevertheless, it is possible that the contribution of excitation modes of the different multipolarities is determining in this region. PACS No.: 25.70

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