scholarly journals Gas phase kinetics of the OH + CH3CH2OH reaction at temperatures of the interstellar medium (T = 21–107 K)

2018 ◽  
Vol 20 (8) ◽  
pp. 5865-5873 ◽  
Author(s):  
A. J. Ocaña ◽  
S. Blázquez ◽  
B. Ballesteros ◽  
A. Canosa ◽  
M. Antiñolo ◽  
...  
Keyword(s):  
Interstellar Medium ◽  
Gas Phase ◽  
Rate Coefficients ◽  
Cold Temperatures ◽  
Gas Phase Kinetics ◽  
P Rate ◽  
Kinetics Of

Rate coefficients for the OH-reaction with ethanol, ubiquitous in the interstellar medium, has been determined at ultra-cold temperatures by using the pulsed and continuous CRESU technique.

Gas phase kinetics of the reactions of NaO with H2, D2, H2O, and D2O

1987 ◽  
Vol 87 (2) ◽  
pp. 921-925 ◽  
Author(s):  
Joel W. Ager ◽  
Carleton J. Howard
Keyword(s):  
Gas Phase ◽  
Gas Phase Kinetics ◽  
Kinetics Of

Gas-Phase Kinetics of O3 + C2H2 and O3 + H2C=CCl2

2000 ◽  
Vol 77 (9) ◽  
pp. 1210
Author(s):  
Joel D. Burley ◽  
Alisa M. Roberts
Keyword(s):  
Gas Phase ◽  
Gas Phase Kinetics ◽  
Kinetics Of

scholarly journals Low temperature gas phase reaction rate coefficient measurements: Toward modeling of stellar winds and the interstellar medium

2019 ◽  
Vol 15 (S350) ◽  
pp. 382-383
Author(s):  
Niclas A. West ◽  
Edward Rutter ◽  
Mark A. Blitz ◽  
Leen Decin ◽  
Dwayne E. Heard
Keyword(s):  
Low Temperature ◽  
Interstellar Medium ◽  
Gas Phase ◽  
Low Temperatures ◽  
Reaction Rate ◽  
Rate Coefficient ◽  
Building Blocks ◽  
Rate Coefficients ◽  
Stellar Winds ◽  
Phase Reaction

AbstractStellar winds of Asymptotic Giant Branch (AGB) stars are responsible for the production of ∼85% of the gas molecules in the interstellar medium (ISM), and yet very few of the gas phase rate coefficients under the relevant conditions (10 – 3000 K) needed to model the rate of production and loss of these molecules in stellar winds have been experimentally measured. If measured at all, the value of the rate coefficient has often only been obtained at room temperature, with extrapolation to lower and higher temperatures using the Arrhenius equation. However, non-Arrhenius behavior has been observed often in the few measured rate coefficients at low temperatures. In previous reactions studied, theoretical simulations of the formation of long-lived pre-reaction complexes and quantum mechanical tunneling through the barrier to reaction have been utilized to fit these non-Arrhenius behaviours of rate coefficients.Reaction rate coefficients that were predicted to produce the largest change in the production/loss of Complex Organic Molecules (COMs) in stellar winds at low temperatures were selected from a sensitivity analysis. Here we present measurements of rate coefficients using a pulsed Laval nozzle apparatus with the Pump Laser Photolysis - Laser Induced Fluorescence (PLP-LIF) technique. Gas flow temperatures between 30 – 134 K have been produced by the University of Leeds apparatus through the controlled expansion of N2 or Ar gas through Laval nozzles of a range of Mach numbers between 2.49 and 4.25.Reactions of interest include those of OH, CN, and CH with volatile organic species, in particular formaldehyde, a molecule which has been detected in the ISM. Kinetics measurements of these reactions at low temperatures will be presented using the decay of the radical reagent. Since formaldehyde and the formal radical (HCO) are potential building blocks of COMs in the interstellar medium, low temperature reaction rate coefficients for their production and loss can help to predict the formation pathways of COMs observed in the interstellar medium.

Gas-phase kinetics of elimination reactions of pentane-2,4-dione derivatives

1995 ◽  
Vol 27 (5) ◽  
pp. 517-523 ◽  
Author(s):  
Nouria A. Al-Awadi ◽  
Mohamed H. El-Nagdi ◽  
Tommy Mathew
Keyword(s):  
Gas Phase ◽  
Gas Phase Kinetics ◽  
Elimination Reactions ◽  
Kinetics Of

Gas-Phase Kinetics of the N + C2N Reaction at Low Temperature

2015 ◽  
Vol 119 (13) ◽  
pp. 3194-3199 ◽  
Author(s):  
James W. Stubbing ◽  
Gianmarco Vanuzzo ◽  
Audrey Moudens ◽  
Jean-Christophe Loison ◽  
Kevin M. Hickson
Keyword(s):  
Low Temperature ◽  
Gas Phase ◽  
Gas Phase Kinetics ◽  
Kinetics Of

ChemInform Abstract: Gas Phase Kinetics of the Reactions of Na and NaO with O3 and N2O.

ChemInform ◽  
1987 ◽  
Vol 18 (9) ◽  
Author(s):  
J. W. III AGER ◽  
C. L. TALCOTT ◽  
C. J. HOWARD
Keyword(s):  
Gas Phase ◽  
Gas Phase Kinetics ◽  
Kinetics Of
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