The modified quasi-quantum treatment of rotationally inelastic NO(X)–He scattering

2015 ◽  
Vol 17 (6) ◽  
pp. 4067-4075 ◽  
Author(s):  
Xia Zhang ◽  
Chris J. Eyles ◽  
Dajun Ding ◽  
Steven Stolte
Keyword(s):  
Molecular Scattering ◽  
Quantum Treatment ◽  
Repulsive Part

A quasi quantum treatment of molecular scattering to account for the softness of the repulsive part of the anisotropic atom-molecule PES.

New Investigations of Thermal and Stimulated Molecular Scattering of Light

1969 ◽  
Vol 99 (9) ◽  
pp. 143-145
Author(s):  
V.S. Starunov ◽  
Immanuil L. Fabelinskii
Keyword(s):  
Molecular Scattering ◽  
Scattering Of Light ◽  
Molecular Scattering Of Light

Software system for numerical simulation of broadband laser gas analysis of the atmosphere

2018 ◽  
pp. 66-73 ◽  
Author(s):  
S. A. Sadovnikov
Keyword(s):  
Numerical Simulation ◽  
Laser Radiation ◽  
Gas Analysis ◽  
Modular System ◽  
Software System ◽  
Transmission Spectra ◽  
Molecular Absorption ◽  
Molecular Scattering ◽  
Atmospheric Transmission ◽  
Wide Range

Introduction: Successful monitoring of environmental parameters requires the development of flexible software complexes with evolvable calculation functionality. Purpose: Developing a modular system for numerical simulation of atmospheric laser gas analysis. Results: Based on differential absorption method, a software system has been developed which provides the calculation of molecular absorption cross-sections, molecular absorption coefficients, atmospheric transmission spectra, and lidar signals. Absorption line contours are calculated using the Voigt profile. The prior information sources are HITRAN spectroscopic databases and statistical models of the distribution of temperature, pressure and gas components in the atmosphere. For modeling lidar signals, software blocks of calculating the molecular scattering coefficient and aerosol absorption/scattering coefficients were developed. For testing the applicability of various laser sources in the problems of environmental monitoring of the atmosphere, a concentration reconstruction error calculation block was developed for the atmospheric gas components, ignoring the interfering absorption of laser radiation by foreign gases. To verify the correct functioning of the software, a program block was developed for comparing the results of the modeling of atmospheric absorption and transmission spectra by using the standard SPECTRA information system. The discrepancy between the calculation of the atmospheric transmission spectra obtained using the developed system as compared to the SPECTRA results is less than 1%. Thus, a set of the presented program blocks allows you to carry out complex modeling of remote atmospheric gas analysis. Practical relevance: The software complex allows you to rapidly assess the possibilities of using a wide range of laser radiation sources for the problems of remote gas analysis.

Statistics of energy levels in the quantum treatment of an elementary reaction

1999 ◽  
Vol 313 (3-4) ◽  
pp. 639-646 ◽  
Author(s):  
Gaia Grossi ◽  
Leonardo Peroncelli ◽  
Naseem Rahman
Keyword(s):  
Energy Levels ◽  
Elementary Reaction ◽  
Quantum Treatment

Quantum treatment for three waves mutually interacting with a single two-level atom

Laser Physics ◽  
2014 ◽  
Vol 24 (10) ◽  
pp. 105205 ◽  
Author(s):  
M Sebawe Abdalla ◽  
A S-F Obada ◽  
E M Khalil ◽  
M M A Ahmed
Keyword(s):  
Level Atom ◽  
Quantum Treatment

scholarly journals On gauge independence for gauge models with soft breaking of BRST symmetry

2014 ◽  
Vol 29 (30) ◽  
pp. 1450184 ◽  
Author(s):  
Alexander Reshetnyak
Keyword(s):  
Gauge Theories ◽  
Brst Symmetry ◽  
Landau Gauge ◽  
Functional Integral ◽  
Yang Mills ◽  
Gauge Models ◽  
S Matrix ◽  
Gauge Fixing ◽  
Dependent Parameter ◽  
Quantum Treatment

A consistent quantum treatment of general gauge theories with an arbitrary gauge-fixing in the presence of soft breaking of the BRST symmetry in the field–antifield formalism is developed. It is based on a gauged (involving a field-dependent parameter) version of finite BRST transformations. The prescription allows one to restore the gauge-independence of the effective action at its extremals and therefore also that of the conventional S-matrix for a theory with BRST-breaking terms being additively introduced into a BRST-invariant action in order to achieve a consistency of the functional integral. We demonstrate the applicability of this prescription within the approach of functional renormalization group to the Yang–Mills and gravity theories. The Gribov–Zwanziger action and the refined Gribov–Zwanziger action for a many-parameter family of gauges, including the Coulomb, axial and covariant gauges, are derived perturbatively on the basis of finite gauged BRST transformations starting from Landau gauge. It is proved that gauge theories with soft breaking of BRST symmetry can be made consistent if the transformed BRST-breaking terms satisfy the same soft BRST symmetry breaking condition in the resulting gauge as the untransformed ones in the initial gauge, and also without this requirement.

ΔmJ Transitions in molecular scattering from isolated adsorbates on surfaces

1988 ◽  
Vol 147 (1) ◽  
pp. 126-132 ◽  
Author(s):  
R.B. Gerber ◽  
G. Petrella
Keyword(s):  
Molecular Scattering
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