Spectroscopic study of rotational energy distribution of BH (A 1Π) and electronic excitation temperature determination

Pramana ◽  
1990 ◽  
Vol 35 (2) ◽  
pp. 137-139 ◽  
Author(s):  
N N Math ◽  
M I Savadatti
Keyword(s):  
Energy Distribution ◽  
Spectroscopic Study ◽  
Electronic Excitation ◽  
Rotational Energy ◽  
Excitation Temperature ◽  
Temperature Determination

Laser Investigations of the Dynamics of Molecule-Surface Interaction

1983 ◽  
Vol 29 ◽  
Author(s):  
J. Hager ◽  
H. Walther
Keyword(s):  
Energy Distribution ◽  
Surface Temperature ◽  
Velocity Distribution ◽  
Average Velocity ◽  
Boltzmann Distribution ◽  
Rotational Energy ◽  
Solid Surfaces ◽  
Measured Velocity ◽  
Small Influence ◽  
Molecule Surface

ABSTRACTThe internal energy distribution of NO molecules scattered from different solid surfaces (Pt(111), graphite, and Pt(111) covered with various adlayers) was investigated by the laser-induced fluorescence method. In the case of the NO/graphite system, moreover, the velocity distribution of the scattered molecules could be measured in a time-offlight experiment. The rotational energy distribution, which can always be described as a Boltzmann distribution, exhibits only partial accommodation to the surface temperature for all surfaces investigated. The measurements of the velocity of the NO molecules scattered from the graphite surface show only a small influence of the surface temperature on the average velocity and on the velocity distribution. Furthermore, the measured velocity distribution is independent of the final rotational state of the scattered molecules. On the basis of these results, a rather complete description of the behavior of the NO molecules during the scattering process can be presented.

Photodissociation of the NO dimer: rotational energy distribution and alignment of the NO(B 2Π) fragments

1992 ◽  
Vol 190 (1-2) ◽  
pp. 135-140 ◽  
Author(s):  
Yukito Naitoh ◽  
Yo Fujimura ◽  
Okitsugu Kajimoto ◽  
Kenji Honma
Keyword(s):  
Energy Distribution ◽  
Rotational Energy

scholarly journals Rotational Energy Distribution of the CsH Formed in the Reaction Between Cs(7P1/2) and H2

1986 ◽  
Vol 5 (6) ◽  
pp. 367-373 ◽  
Author(s):  
J. P. Visticot ◽  
M. Ferray ◽  
P. D'Oliveira ◽  
B. Sayer
Keyword(s):  
Energy Distribution ◽  
Hydrogen Molecule ◽  
Rotational Energy ◽  
Cesium Atom ◽  
Thermal Distribution ◽  
A Cell ◽  
Rotational Distribution

The nascent rotational distribution of the CsH molecules formed by the reaction between a cesium atom in the 7P1/2 state and a hydrogen molecule has been measured in a cell. A thermal distribution at the temperature of the cell is reported.

1511 Measurement of rotational energy distribution in nitrogen molecular beam by REMPI

2010 ◽  
Vol 2010 (0) ◽  
pp. 455-456
Author(s):  
Tatsuya MORIYAMA ◽  
Hiroki YAMAGUCHI ◽  
Kyohei IDE ◽  
Yu MATSUDA ◽  
Yasuhiro Egami ◽  
...  
Keyword(s):  
Energy Distribution ◽  
Molecular Beam ◽  
Rotational Energy

The influence of environment upon the spectra of molecules in liquids and crystals

1960 ◽  
Vol 255 (1280) ◽  
pp. 5-21 ◽  
Keyword(s):  
Ground State ◽  
Electronic Excitation ◽  
Energy Levels ◽  
Rotational Energy ◽  
Intermolecular Distance ◽  
Pressure Broadening ◽  
Basic Difference ◽  
Solid States ◽  
Quantum Numbers ◽  
Electronic Ground

The effect on the spectrum of a molecule of the environment in which it is located depends upon the changes which the surroundings produce in the electronic, vibrational, rotational and nuclear energies of the upper and lower states of the molecule. Studies of the influence of environment in the gaseous, liquid or solid states can thus be made by any of the appropriate techniques listed in table 1, and it is clearly desirable in studying any one system to use as many different techniques as possible. A basic difference between the effect of environment on electronic and vibra­tional energy levels arises from the very much greater overlap of electron density with the environment that results from electronic excitation. Hence while for the consideration of changes which arise in the vibrational spectrum it is adequate to consider only the distortion of the curve relating the interaction energy to the intermolecular distance in the electronic ground state, for electronic spectra, how­ever, the changes in the potential curves in both upper and lower states must clearly be taken into account. Collisions between molecules in gases lead to the broadening of rotational energy levels, and much useful information on inter­molecular force fields has resulted from observations on pressure broadening of pure rotational lines in the microwave region. Both self-broadening and broadening by different foreign gases have been studied as well as the dependence of line half­width Δ v 1/2 on the rotational quantum numbers J and K (Townes & Schawlow 1955).

Nonequilibrium Rotational Energy Distribution in NH3Supersonic Molecular Beam

1992 ◽  
Vol 31 (Part 1, No. 4) ◽  
pp. 1199-1205 ◽  
Author(s):  
Yoshihito Tanaka ◽  
Maki Tachikawa ◽  
Fusakazu Matsushima ◽  
Yoshihiko Uematsu ◽  
Tadao Shimizu
Keyword(s):  
Energy Distribution ◽  
Molecular Beam ◽  
Rotational Energy
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