Parameterization of the effective dipole moment matrix elements in the case of the asymmetric top molecules. Application to NO2 molecule

2015 ◽  
Vol 28 (1) ◽  
pp. 17-23 ◽  
Author(s):  
V. I. Perevalov ◽  
A. A. Lukashevskaya
Keyword(s):  
Dipole Moment ◽  
Matrix Elements ◽  
Moment Matrix ◽  
Effective Dipole Moment ◽  
Asymmetric Top

The influence of intracollisional interference on the dipole spectrum of HD

1978 ◽  
Vol 56 (1) ◽  
pp. 75-81 ◽  
Author(s):  
R. H. Tipping ◽  
J. D. Poll ◽  
A. R. W. McKellar
Keyword(s):  
Dipole Moment ◽  
Translational Motion ◽  
Rotational Level ◽  
Intermolecular Forces ◽  
Spectral Lines ◽  
Destructive Interference ◽  
Matrix Elements ◽  
Moment Matrix ◽  
Integrated Intensities ◽  
Induced Dipoles

The influence of intracollisional interference on the dipole spectrum of pure HD is investigated within the framework of an adiabatic separation of the relative translational motion and non-mixing of rotational levels. The effect leads to a density dependence of the integrated intensities for the sharp spectral lines. It is found that the large discrepancy between the theoretical and experimental pure rotational dipole moment matrix elements for HD reported in the literature can be interpreted as destructive interference between the allowed and the collision-induced dipoles. Similar calculations for the fundamental band are in excellent agreement with the experimental results for the R1(1) line, but agree less well for the R1(0) line. We interpret this, as well as the asymmetrical line shape, as evidence of rotational level mixing due to anisotropic intermolecular forces.

Comparison of Ga1−xAlxAs/GaAs and Ga1−xlnxAs/GaAs quantum wells as dependent on Al and In concentrations under intense laser field

2015 ◽  
Vol 29 (27) ◽  
pp. 1550187 ◽  
Author(s):  
Emine Ozturk
Keyword(s):  
Dipole Moment ◽  
Quantum Wells ◽  
Laser Field ◽  
Energy Levels ◽  
Intense Laser ◽  
Structure Parameters ◽  
Matrix Elements ◽  
Moment Matrix ◽  
Intense Laser Field ◽  
Mass Approximation

In this study, the electronic properties of [Formula: see text] and [Formula: see text] quantum wells (QWs) are theoretically calculated as dependent on the intense laser field (ILF) and x-concentration value within the effective mass approximation and the envelope function approach. Our results show that the shape of confined potential profile, the energy differences and the dipole moment matrix elements are changed as dependent on the ILF and x-value. The energy levels of different QWs give different values by increasing ILF amplitudes and x-concentrations. In the case of QW under ILF, there are significant modifications of the electrical states of QWs, due to the effects of confining the potential resulting from the applied ILF. I say that the variation of [Formula: see text] QW under ILF is more than [Formula: see text] QW. The numerical results show that the structure parameters have a great effect on the electronic characteristics of these QW structures.

Rotation–Vibration Coupling in Diatomic Molecules and the Factorization Method. II. Closed Form Formulas for the Morse–Pekeris Intensities

1974 ◽  
Vol 52 (2) ◽  
pp. 110-119 ◽  
Author(s):  
M. Badawi ◽  
N. Bessis ◽  
G. Bessis ◽  
G. Hadinger
Keyword(s):  
Dipole Moment ◽  
Closed Form ◽  
Explicit Expression ◽  
Factorization Method ◽  
Closed Form Expression ◽  
Matrix Elements ◽  
Moment Matrix ◽  
Form Expression ◽  
Vibration Coupling

It is shown that, by applying an "accelerated" ladder operatorial formalism or an equivalent matrix procedure, one can obtain, easily, for the case of a Morse–Pekeris potential, a closed form expression of the rotation–vibration nuclear dipole moment matrix elements. This explicit expression, which is valid for any degree k of the dipole moment Taylor's expansion, allows the determination of the rotation–vibration intensities for any ΩνJ → Ω′ν′J′ transition.

Sign in / Sign up

Export Citation Format

Share Document