Chemical reaction versus vibrational quenching in low energy collisions of vibrationally excited OH with O

2013 ◽  
Vol 139 (19) ◽  
pp. 194305 ◽  
Author(s):  
G. B. Pradhan ◽  
J. C. Juanes-Marcos ◽  
N. Balakrishnan ◽  
Brian K. Kendrick
Keyword(s):  
Chemical Reaction ◽  
Low Energy ◽  
Vibrationally Excited

Neutral Beam Source Design and Beam Kinetic Energy Activated SiO2 Etching

1992 ◽  
Vol 279 ◽  
Author(s):  
Lee Chen ◽  
Akihisa Sekiguchi ◽  
Dragan Podlesnik
Keyword(s):  
Kinetic Energy ◽  
Chemical Reaction ◽  
Incident Energy ◽  
Beam Energy ◽  
Large Diameter ◽  
Low Energy ◽  
Neutral Beam ◽  
Beam Source ◽  
Neutral Radical ◽  
Unique Method

ABSTRACTAn unique method is used to produce a low energy nonthermalized fast neutral radical beam wliich can activate the SiO2 surface for chemical reaction at the desired incident energy. The fast neutral beam energy is continuously adjustable (2eV<Ek<200eV) and the beam flux is typically 5×1015cm−2 sec−1(∼4L). An uniform large diameter plasma is also made for the production of neutral beam covering 5”wafer and larger. Large diameter neutral beam single wafer reactor is feasible with off-the-shelf pumping technology.

The reaction of cyanogen radicals with nitric oxide

1965 ◽  
Vol 283 (1394) ◽  
pp. 291-301 ◽  
Keyword(s):  
Nitric Oxide ◽  
Chemical Reaction ◽  
Vibrational Energy ◽  
Vibrational Excitation ◽  
Resonance Energy ◽  
Ultra Violet ◽  
Vibrationally Excited ◽  
Near Resonance ◽  
Continuous Absorption ◽  
Unstable Compound

Vibrational energy transfer and a chemical reaction between nitric oxide and the cyanogen radical have been studied by flash photolysing cyanogen and cyanogen bromide in the presence of nitric oxide. The product of the chemical reaction is, at least in part, the unstable compound nitrosyl cyanide NOCN and the rate constant is 2 x 10 12 ml. mole -1 s -1 or 1 x 10 17 ml. mole -2 s -1 with nitrogen as third body. The compound has a continuous absorption in the ultra-violet and yields vibrationally excited nitric oxide on photolysis. Vibrationally excited cyanogen radicals produced by means of electronic excitation of the radical produce vibrational excitation of the nitric oxide through near resonance energy exchange. Vibrational equilibrium is reached by nitric oxide through further resonance exchanges: CN + NO → NOCN, NOCN + hv → N O ( v > 0) + CN, NO ( v = 0) + CN ( v = n ) → NO ( v = 1) + CN ( v = n – 1 ) , NO ( v = 1) + CN ( v = m ) → NO ( v = 2) + CN ( v = m –1 ), 2NO { v = 1) ⇌ NO ( v = 2) + NO ( v = 0), NO ( v = 2) +NO ( v = 1) ⇌ NO ( v = 3) + NO { v = 0), etc.

Scaling Up Generation of Vibrationally Excited CO in a Chemical Reaction between Carbon Vapor and Oxygen

2018 ◽  
Author(s):  
Elijah Jans ◽  
Kraig Frederickson ◽  
Ilya Gulko ◽  
J William Rich ◽  
Igor V. Adamovich
Keyword(s):  
Chemical Reaction ◽  
Scaling Up ◽  
Vibrationally Excited ◽  
Carbon Vapor

Investigation of Resonances in the Scattering of a Heavy ‘Positron’ by H2 that Involve Vibrationally Excited Quasi-Bound States

2010 ◽  
Vol 666 ◽  
pp. 25-30
Author(s):  
Edward A.G. Armour
Keyword(s):  
Variational Method ◽  
Bound States ◽  
Low Energy ◽  
Annihilation Rate ◽  
Effective Number ◽  
Feshbach Resonances ◽  
Vibrational States ◽  
Vibrationally Excited ◽  
Positron Scattering ◽  
Very High

There is currently great interest in the very large values of the positron annihilation rate that have been observed in low-energy positron scattering by some molecules. The annihilation rate is proportional to , the effective number of electrons in the target available to the positron for annihilation. These very high rates and associated values of have been observed experimentally to occur at energies just below the energies of excited vibrational states of the molecule concerned. This has been explained by Gribakin [Phys. Rev. A Vol. 61 (2000), p. 022720] and Gribakin and Lee [Phys. Rev. Lett. Vol. 97 (2006), p. 193201] as being due to Feshbach resonances involving excited quasi-bound vibrational states. Their explanation is partly phenomenological. In this paper, I describe the results of an ab initio treatment of this resonant behaviour in the case of the scattering of a heavy ‘positron’ by , using the Kohn variational method.

Relaxation and chemical reaction of vibrationally excited molecules in the gas phase

1980 ◽  
Vol 59 ◽  
pp. 207-224 ◽  
Author(s):  
M. Kneba ◽  
R. Stender ◽  
U. Wellhausen ◽  
J. Wolfrum
Keyword(s):  
Gas Phase ◽  
Chemical Reaction ◽  
Vibrationally Excited ◽  
Excited Molecules

Chemical reaction of sputtered Cu film with PI modified by low energy reactive atomic beam

2006 ◽  
Vol 252 (16) ◽  
pp. 5877-5891 ◽  
Author(s):  
Jong-Yong Park ◽  
Yeon-Sik Jung ◽  
J. Cho ◽  
Won-Kook Choi
Keyword(s):  
Chemical Reaction ◽  
Atomic Beam ◽  
Low Energy ◽  
Cu Film

A crossed-beam study of low energy Ar+ + H2O collisions: Charge transfer and chemical reaction

1981 ◽  
Vol 60 (3) ◽  
pp. 369-378 ◽  
Author(s):  
J. Glosík ◽  
B. Friedrich ◽  
Z. Herman
Keyword(s):  
Charge Transfer ◽  
Chemical Reaction ◽  
Low Energy
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