Bridging the gap. A continuous scale of gas-phase basicities from methane to water from pulsed electron beam high pressure mass spectrometric equilibria measurements

1985 ◽  
Vol 107 (9) ◽  
pp. 2612-2617 ◽  
Author(s):  
T. B. McMahon ◽  
P. Kebarle
Keyword(s):  
High Pressure ◽  
Electron Beam ◽  
Gas Phase ◽  
Mass Spectrometric ◽  
Pulsed Electron Beam ◽  
Continuous Scale ◽  
Gas Phase Basicities

Kinetics and Rate Constants of Reactions Leading to Hydration of and in Gaseous Oxygen, Argon, and Helium Containing Traces of Water

1972 ◽  
Vol 50 (14) ◽  
pp. 2230-2235 ◽  
Author(s):  
J. D. Payzant ◽  
A. J. Cunningham ◽  
P. Kebarle
Keyword(s):  
High Pressure ◽  
Electron Beam ◽  
Gas Phase ◽  
Mass Spectrometer ◽  
Rate Constants ◽  
Gas Phase Reactions ◽  
Third Order ◽  
Gaseous Oxygen ◽  
Time Resolved ◽  
Pulsed Electron Beam

The rate constants for the forward and reverse components of gas phase reactions:[Formula: see text]were measured with a pulsed electron beam, time resolved detection high pressure mass spectrometer at 300 °K. O2, Ar, and He at pressures from 1–7 Torr were used as third gas M. The forward reactions were found to be third order and the reverse reactions second order. Establishment of the equilibria could also be observed.

Proton affinities of the hydrogen, methyl, and trifluoromethyl halides from pulsed electron beam high pressure mass spectrometric equilibria measurements

1985 ◽  
Vol 63 (11) ◽  
pp. 3160-3167 ◽  
Author(s):  
T. B. McMahon ◽  
P. Kebarle
Keyword(s):  
High Pressure ◽  
Electron Beam ◽  
Mass Spectrometric ◽  
Proton Affinities ◽  
Methyl Halides ◽  
Hydrogen Halides ◽  
Pulsed Electron Beam ◽  
Linear Correlations ◽  
Mass Spectrometric Techniques ◽  
Methyl Cation

Pulsed electron beam high pressure mass spectrometric techniques have been used to investigate proton transfer equilibria involving hydrogen and trifluoromethyl halides. Methyl cation transfer equilibria have also been used to determine methyl cation affinities of hydrogen halides. Proton affinities obtained are HCl = 137.5, HBr = 142.9, Hl = 150.9, CF3Cl = 139.0, CF3Br = 141.3, and CF3l = 150.4 kcal mol−1. Methyl cation affinities obtained are HF = 15 ± 2, HCl = 19.8, HBr = 21.3, and Hl = 31.1 kcal mol−1. The values of methyl cation affinity of hydrogen halides can in turn be used to calculate proton affinities of the methyl halides of CH3Cl = 160.8; CH3Br = 164.8; and CH3l = 171 kcal mol−1. Linear correlations are found between proton affinities and valence ionization potentials and between proton affinities and methyl cation affinities.

Concentration enrichment in the ion source of a pulsed electron beam high pressure mass spectrometer

1994 ◽  
Vol 139 ◽  
pp. 47-58 ◽  
Author(s):  
D.S. McGrew ◽  
W.B. Knighton ◽  
J.A. Bognar ◽  
E.P. Grimsrud
Keyword(s):  
High Pressure ◽  
Electron Beam ◽  
Mass Spectrometer ◽  
Ion Source ◽  
Pulsed Electron Beam

Investigation of the propagation of a gigawatt pulsed electron beam in compositions of high-pressure gas

2014 ◽  
Vol 21 (7) ◽  
pp. 072302 ◽  
Author(s):  
R. V. Sazonov ◽  
G. E. Kholodnaya ◽  
D. V. Ponomarev ◽  
G. E. Remnev
Keyword(s):  
High Pressure ◽  
Electron Beam ◽  
Pulsed Electron Beam
Sign in / Sign up

Export Citation Format

Share Document