Rate constants for collisional quenching of NO (A2Σ+, v = 0) by He, Ne, Ar, Kr, and Xe, and infrared emission accompanying rare gas and impurity quenching

2014 ◽  
Vol 16 (22) ◽  
pp. 11047-11053 ◽  
Author(s):  
Julian Few ◽  
Gus Hancock
Keyword(s):  
Rate Constants ◽  
Infrared Emission ◽  
Rare Gas ◽  
Collisional Quenching ◽  
Rare Gases ◽  
Vibrationally Excited ◽  
Potential Contaminant

Rates of quenching of NO (A2Σ+, v = 0) have been measured for the rare gases, and infrared emission used to observe vibrationally excited quenching products. The figure shows emission following quenching by O2, a potential contaminant.

Ozone yields from the Febetron radiolysis of oxygen – rare gas mixtures

1977 ◽  
Vol 55 (2) ◽  
pp. 203-209 ◽  
Author(s):  
A. W. Boyd ◽  
O. A. Miller ◽  
E. B. Selkirk
Keyword(s):  
Excited State ◽  
Gas Mixtures ◽  
Rare Gas ◽  
Rare Gases

Ozone yields have been measured from the Febetron irradiation of mixtures containing 1–50 mol% oxygen and each of the five rare gases. The maximum values of G(O3) calculated using the energy absorbed only in the rare gas are obtained with the addition of less than 10% oxygen and are for: He, 16; Ne, 14; Ar, 11; Kr, 10; Xe, 12; each with an uncertainty of less than ±10%. On the addition of 0.2 mol% SF6 these yields are reduced to 6,5,1,2, and 2.5 respectively.These values are compared with those derived from ion and excited state yields and the contributions of subexcitation electrons.

Collision-induced absorption in ethane–rare gas mixtures

1983 ◽  
Vol 61 (4) ◽  
pp. 633-640 ◽  
Author(s):  
I. R. Dagg ◽  
L. A. A. Read ◽  
A. Anderson
Keyword(s):  
Fourier Transform ◽  
Temperature Dependence ◽  
Quadrupole Moment ◽  
Gas Mixtures ◽  
Rare Gas ◽  
Fourier Transform Spectrometer ◽  
Rare Gases ◽  
Induced Absorption ◽  
Absolute Value ◽  
The Absolute

The collision-induced spectra of mixtures of ethane and each of the rare gases He, Ar, Kr, and Xe in the 40–360 cm−1 region have been obtained using a Michelson Fourier transform spectrometer. In addition, the temperature dependence of the absorption in ethane and ethane–xenon mixtures is reported. All results have been analyzed according to the theory for quadrupole induced rotation–translation absorption. The absolute value of the quadrupole moment of ethane is estimated to be less than 1.0 B and most likely less than 0.5 B. Various speculations are made concerning the induction mechanisms (other than quadrupolar) for each of the mixtures.

Generation of the organo-rare gas dications HCCRg2+ (Rg = Ar and Kr) in the reaction of acetylene dications with rare gases

2008 ◽  
Vol 10 (47) ◽  
pp. 7121 ◽  
Author(s):  
Daniela Ascenzi ◽  
Paolo Tosi ◽  
Jana Roithová ◽  
Claire L. Ricketts ◽  
Detlef Schröder ◽  
...  
Keyword(s):  
Rare Gas ◽  
Rare Gases

Vibrational energy transfer. Collisional quenching of competitive unimolecular reactions

1968 ◽  
Vol 46 (2) ◽  
pp. 341-343 ◽  
Author(s):  
D. C. Tardy ◽  
C. W. Larson ◽  
B. S. Rabinovitch
Keyword(s):  
Vibrational Energy ◽  
Heat Bath ◽  
Polyatomic Molecules ◽  
Unimolecular Reaction ◽  
Collisional Quenching ◽  
Kcal Mole ◽  
Vibrationally Excited ◽  
Reaction Systems ◽  
A Value ◽  
Collisional Deexcitation

A technique is described for the study of collisional deexcitation of highly vibrationally excited polyatomic molecules by use of externally activated competitive unimolecular reaction systems. This method has some advantages and is illustrated by the decomposition of chemically activated hexyl-3 radicals in the presence of H2 and CF4 as heat bath molecules. The former removes ~1.2 kcal mole−1 per successful collision; while for the latter a value in excess of 4.6 kcal is found so that CF4 behaves operationally like a strong collider.

Bonding of Rare-Gas Atoms to Si in Reactions of Rare Gases with SiF3+

2001 ◽  
Vol 105 (49) ◽  
pp. 11073-11079 ◽  
Author(s):  
A. Cunje ◽  
V. I. Baranov ◽  
Y. Ling ◽  
A. C. Hopkinson ◽  
D. K. Bohme
Keyword(s):  
Rare Gas ◽  
Rare Gases ◽  
Rare Gas Atoms

Uredelgase in einigen Steinmeteoriten

1960 ◽  
Vol 15 (7) ◽  
pp. 600-612 ◽  
Author(s):  
J. Zähringer ◽  
W. Gentner
Keyword(s):  
Large Deviations ◽  
Isotopic Composition ◽  
Gas Content ◽  
Rare Gas ◽  
Rare Gases

In the two chondrites Kapoeta and Abee outstanding rare gas content have been found. From the amount and isotopic composition it is concluded that primordial rare gases have been included in these meteorites. Kapoeta contains all rare gases in excess, while Abee has mainly the heavier rare gases as primordial component. The Ne20/Ne22—and A36/A38—ratios show large deviations from atmospheric Neon and Argon. No such large deviations could be found for Krypton and Xenon.

The Influence Of Matter And Black-Body Radiation Photons On The Dipole Polarizabilities A And γ Of Atoms

1996 ◽  
Vol 51 (7) ◽  
pp. 805-808 ◽  
Author(s):  
Uwe Hohm
Keyword(s):  
Reaction Rate ◽  
Black Body ◽  
Black Body Radiation ◽  
Rare Gas ◽  
Dipole Polarizability ◽  
Rare Gases ◽  
Reaction Rate Constants ◽  
Molecule Reaction ◽  
Rare Gas Atoms ◽  
Linear Dipole

Abstract The influence of the surroundings on the linear dipole polarizability α and second hyperpo-larizability γ is discussed in terms of the density ϱM of isotropically distributed matter as well as the density ϱp of thermal black-body radiation photons, α and γ of the rare gas atoms are studied as examples. At standard conditions, both effects are of comparable size for the rare gases. Possible consequences for ion-molecule reaction rate constants in astronomical environments are suggested.

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