A study of molecular rotation in dense fluids from the first vibrational overtone band shape of HCl in Xe fluid

2004 ◽  
Vol 6 (4) ◽  
pp. 725-729 ◽  
Author(s):  
Justo Pérez ◽  
Antonio Padilla ◽  
Michael O. Bulanin ◽  
Alexandra V. Domanskaya ◽  
Klaus Kerl
Keyword(s):  
Molecular Rotation ◽  
Band Shape ◽  
Dense Fluids ◽  
Overtone Band ◽  
Vibrational Overtone

scholarly journals Application of the Spectral Structure Parameterization technique: retrieval of total water vapor columns from GOME

2003 ◽  
Vol 3 (1) ◽  
pp. 145-160 ◽  
Author(s):  
R. Lang ◽  
J. E. Williams ◽  
W. J. van der Zande ◽  
A. N. Maurellis
Keyword(s):  
Water Vapor ◽  
Scattered Light ◽  
Sampling Technique ◽  
Optical Absorption Coefficient ◽  
Spectral Structure ◽  
Total Water ◽  
Transfer Scheme ◽  
Overtone Band ◽  
Vibrational Overtone ◽  
Reflectivity Spectra

Abstract. We use a recently proposed spectral sampling technique for measurements of atmospheric transmissions called the Spectral Structure Parameterization (SSP) in order to retrieve total water vapor columns (WVC) from reflectivity spectra measured by the Global Ozone Monitoring Experiment (GOME). SSP provides a good compromise between efficiency and speed when performing retrievals on highly structured spectra of narrow-band absorbers like water vapor. We show that SSP can be implemented in a radiative transfer scheme which treats both direct-path absorption and absorption by singly-scattered light directly. For the retrieval we exploit a ro-vibrational overtone band of water vapor located in the visible around 590 nm. We compare our results to independent values given by the data assimilation model of ECMWF. In addition, results are compared to those obtained from the more accurate, but more computationally expensive, Optical Absorption Coefficient Spectroscopy (OACS).

The Stark effect in methane’s 3ν1+ν3 vibrational overtone band

1993 ◽  
Vol 99 (2) ◽  
pp. 1429-1432 ◽  
Author(s):  
Kirk Boraas ◽  
David F. De Boer ◽  
Zhen Lin ◽  
James P. Reilly
Keyword(s):  
Stark Effect ◽  
Overtone Band ◽  
Vibrational Overtone

High resolution study of methane’s 3ν1+ν3 vibrational overtone band

1994 ◽  
Vol 100 (11) ◽  
pp. 7916-7927 ◽  
Author(s):  
Kirk Boraas ◽  
Zhen Lin ◽  
James P. Reilly
Keyword(s):  
High Resolution ◽  
Overtone Band ◽  
Vibrational Overtone ◽  
Resolution Study

scholarly journals Application of the Spectral Structure Parameterization technique: retrieval of total water vapor columns from GOME

2002 ◽  
Vol 2 (4) ◽  
pp. 1097-1130 ◽  
Author(s):  
R. Lang ◽  
J. E. Williams ◽  
W. J. van der Zande ◽  
A. N. Maurellis
Keyword(s):  
Water Vapor ◽  
Scattered Light ◽  
Sampling Technique ◽  
Optical Absorption Coefficient ◽  
Spectral Structure ◽  
Total Water ◽  
Transfer Scheme ◽  
Overtone Band ◽  
Vibrational Overtone ◽  
Reflectivity Spectra

Abstract. We use a recently proposed spectral sampling technique for measurements of atmospheric transmissions called the Spectral Structure Parameterization (SSP) in order to retrieve total water vapor columns (WVC) from reflectivity spectra measured by the Global Ozone Monitoring Experiment (GOME). SSP provides a good compromise between efficiency and speed when performing retrievals on highly structured spectra of narrow-band absorbers like water vapor. We show that SSP can be implemented in a radiative transfer scheme which treats both direct-path absorption and absorption by singly scattered light directly. For the retrieval we exploit a ro-vibrational overtone band of water vapor located in the visible around 590 nm. We compare our results to independent values given by the data assimilation model of ECMWF. In addition, results are compared to those obtained from the more accurate, but slower, Optical Absorption Coefficient Spectroscopy (OACS).

Stochastic Particle Dynamics

2018 ◽  
Author(s):  
Sauro Succi
Keyword(s):  
Brownian Motion ◽  
Kinetic Theory ◽  
Stochastic Dynamics ◽  
Kinetic Equations ◽  
Planck Equation ◽  
Central Place ◽  
Conclusive Evidence ◽  
Dense Fluids ◽  
Complementary Role ◽  
Collisional Interactions

Dense fluids and liquids molecules are in constant interaction; hence, they do not fit into the Boltzmann’s picture of a clearcut separation between free-streaming and collisional interactions. Since the interactions are soft and do not involve large scattering angles, an effective way of describing dense fluids is to formulate stochastic models of particle motion, as pioneered by Einstein’s theory of Brownian motion and later extended by Paul Langevin. Besides its practical value for the study of the kinetic theory of dense fluids, Brownian motion bears a central place in the historical development of kinetic theory. Among others, it provided conclusive evidence in favor of the atomistic theory of matter. This chapter introduces the basic notions of stochastic dynamics and its connection with other important kinetic equations, primarily the Fokker–Planck equation, which bear a complementary role to the Boltzmann equation in the kinetic theory of dense fluids.

Switching Aromatic Character by Complexation: π to π* Change Seen in Molecular Rotation Spectra

2021 ◽  
pp. 5150-5155
Author(s):  
Hao Wang ◽  
Junhua Chen ◽  
Chunguo Duan ◽  
Xuefang Xu ◽  
Yang Zheng ◽  
...  
Keyword(s):  
Molecular Rotation ◽  
Aromatic Character
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