Molecular beam maser measurements of relaxation cross sections in NH3

1973 ◽  
Vol 20 (6) ◽  
pp. 519-524 ◽  
Author(s):  
S.G. Kukolich ◽  
J.H.S. Wang ◽  
D.E. Oates
Keyword(s):  
Cross Sections ◽  
Molecular Beam ◽  
Beam Maser

Measurements of relaxation cross sections for NH3 and OCS with a molecular beam maser spectrometer

1973 ◽  
Vol 59 (10) ◽  
pp. 5268-5276 ◽  
Author(s):  
J. H. S. Wang ◽  
D. E. Oates ◽  
A. Ben‐Reuven ◽  
S. G. Kukolich
Keyword(s):  
Cross Sections ◽  
Molecular Beam ◽  
Beam Maser

Crossed-beam studies of radical reaction dynamics:

1994 ◽  
Vol 72 (3) ◽  
pp. 660-672 ◽  
Author(s):  
R. Glen Macdonald ◽  
Kopin Liu Argonne ◽  
David M. Sonnenfroh ◽  
Di-Jia Liu
Keyword(s):  
Cross Sections ◽  
Molecular Beam ◽  
Radical Reaction ◽  
Reaction Cross ◽  
Translational Energy ◽  
Vibronic State ◽  
State Distribution ◽  
Title Reaction ◽  
Vibrational Ground State ◽  
Reaction Cross Sections

The title reaction has been studied in a crossed molecular beam apparatus. Both the product state distributions and the translational energy dependence of the reaction cross sections were measured under single collision conditions. Excellent agreement was found over a wide temperature range (26–3800 K) between rate constants deduced from the translational excitation function and recent thermal kinetic data. The rotational state distribution was found to be very cold compared to the reaction exothermicity, and could be described by a Boltzmann temperature of 110 K for all K-doublet levels. The vibronic state distribution was also found to be cold, with 70% of the products formed in the vibrational ground state. By comparing the molecular beam results for vibronic state distributions with those obtained from recent bulb experiments, it was conjectured that there appears to be a strong correlation between rotation in the reactants and bending excitation in the products.

Elliptical oscillation in molecular beam maser with disk resonator

1981 ◽  
Vol 17 (4) ◽  
pp. 156 ◽  
Author(s):  
G. Yassin ◽  
D.C. Laine
Keyword(s):  
Molecular Beam ◽  
Disk Resonator ◽  
Beam Maser

Polarization transients in a molecular beam maser oscillator

1975 ◽  
Vol 51 (8) ◽  
pp. 477-478
Author(s):  
P.R. Lefrère ◽  
D.C. Lainé
Keyword(s):  
Molecular Beam ◽  
Beam Maser

Helium Atom Scattering from Cyclopentane, Pyrrolidine and Tetrahydrofurane in Crossed Molecular Beams

1997 ◽  
Vol 52 (5) ◽  
pp. 425-431
Author(s):  
Christian Gebauer ◽  
Olaf Klein ◽  
Ralf Schmidt ◽  
Wolfhart Seidel
Keyword(s):  
High Resolution ◽  
Helium Atom ◽  
Cross Sections ◽  
Differential Cross ◽  
Molecular Beam ◽  
Molecular Beams ◽  
Geometric Transformation ◽  
Helium Atom Scattering ◽  
Helium Atoms ◽  
Atom Scattering

Abstract Scattering of helium atoms by cyclopentane, pyrrolidine and tetrahydrofurane molecules was ob-served in crossed molecular beam experiments. The intensity of scattered helium atoms, depending on the scattering angle, was measured with high resolution, and the damping of the diffraction oscillations of the differential cross sections was used to extract elastic anisotropic interaction potentials for these molecules. The evaluation included a geometric transformation concerning the puckered states of the envelope and the twisted conformation of the molecules. The potentials were found to be rather similar.

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