Dipole Moment Function of Methane and Analytical Anharmonic, 9-dimensional Potential Surface: Theory and Experiment for the Permanent Electric Dipole Moment of CH2D2Using Quantum Monte Carlo Calculations and FIR Spectroscopy

1995 ◽  
Vol 99 (3) ◽  
pp. 275-281 ◽  
Author(s):  
Hans Hollenstein ◽  
Roberto R. Marquardt ◽  
Martin Quack ◽  
Martin A. Suhm
Keyword(s):  
Monte Carlo ◽  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Quantum Monte Carlo ◽  
Potential Surface ◽  
Surface Theory ◽  
Monte Carlo Calculations ◽  
Permanent Electric Dipole Moment ◽  
Theory And Experiment

The permanent electric dipole moment of CaOH

1990 ◽  
Vol 93 (6) ◽  
pp. 4179-4186 ◽  
Author(s):  
Charles W. Bauschlicher ◽  
Stephen R. Langhoff ◽  
Timothy C. Steimle ◽  
Jeffrey E. Shirley
Keyword(s):  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Permanent Electric Dipole Moment

Interference effects in the spectrum of HD: I. The fundamental band of pure HD

1983 ◽  
Vol 61 (12) ◽  
pp. 1648-1654 ◽  
Author(s):  
N. H. Rich ◽  
A. R. W. McKellar
Keyword(s):  
Absorption Spectrum ◽  
Dipole Moment ◽  
Phase Shift ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
High Density ◽  
Line Profiles ◽  
Interference Effects ◽  
Permanent Electric Dipole Moment ◽  
Precise Interpretation

The absorption spectrum of the ν = 1 ← 0 band of HD has been investigated at a temperature of 77 K and for densities in the range of 15 to 140 amagat. The band consists of two components: a broad collision-induced quasi continuum arising from dipoles induced during molecular collisions; and a dipole-allowed part arising from the small permanent electric dipole moment of the free HD molecule. The interference effects which occur between these two components were studied for the dipole-allowed R1(0) and R1(1) transitions. These transitions exhibited increasingly large asymmetries and changes in intensity at high density, but their behaviours were quite different from each other. The shape of each transition could be well represented by a series of Fano line profiles, and the evolution of shape and intensity with density could be accounted for by the formulation of Herman, Tipping, and Poll. However, the precise interpretation of the phase shift parameters arising in the theory is not clear.

scholarly journals Моделирование источника ультрахолодных нейтронов на реакторе ПИК

2022 ◽  
Vol 92 (2) ◽  
pp. 327
Author(s):  
А.К. Фомин ◽  
А.П. Серебров
Keyword(s):  
Monte Carlo ◽  
Dipole Moment ◽  
Electric Dipole Moment ◽  
Computer Model ◽  
Electric Dipole ◽  
Monte Carlo Model ◽  
Ultracold Neutrons ◽  
Neutron Guide ◽  
Experimental Setup ◽  
Guide System

The paper presents the simulation of a complex of reserch with ultracold neutrons at the reactor PIK (Gatchina, Russia). The complex is being built on the basis of a high-intensity source of ultracold neutrons at the channel GEK-4. A Monte Carlo model has been developed, which includes a source, a neutron guide system and an experimental setup for search for the electric dipole moment of a neutron, taking into account their real location in the main hall of the reactor. Using the developed computer model the density of ultracold neutrons in the setup was obtained, which is 200 <sup>-3</sup>. It is 50 times higher than at the source at the Institut Laue-Langevin (Grenoble, France). This density will allow to achieve a sensitivity of measurements in the experiment of 1·10<sup>-27</sup> е·cm/year.

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