Theoretical study of the rovibrational energy spectrum and the numbers and densities of bound vibrational states for the system HCO+/HOC+

1998 ◽  
Vol 109 (11) ◽  
pp. 4456-4470 ◽  
Author(s):  
Mirjana Mladenović ◽  
Stefan Schmatz
Keyword(s):  
Energy Spectrum ◽  
Theoretical Study ◽  
Vibrational States

Theoretical Study of Rotational Spectroscopy of Acetonitrile-d3in the Ground and Different Excited Vibrational States

2008 ◽  
Vol 5 (2) ◽  
pp. 201-218
Author(s):  
Motamedi Masoud ◽  
Moradi Parinaz
Keyword(s):  
Least Squares ◽  
Millimeter Wave ◽  
Theoretical Study ◽  
Rotational Spectroscopy ◽  
Accuracy Analysis ◽  
Centrifugal Distortion ◽  
Vibrational States ◽  
Rotational Spectra ◽  
Centrifugal Distortion Constants

The millimeter-wave rotational spectra of the ground and excited vibrational states v8= 1 and v8= 2 of the symmetric top molecule CD3CN have been analyzed again. Thel= ± 1 in v8=1,l= 0 andl= ± 2 series in v8= 2 states have been assigned respectively. The assignment and analysis of the measurements with a least – squares procedure have made it possible to obtain the rotational, quartic and sextic centrifugal distortion constants with more reliable and higher accuracy. Analysis of the v8= 2 state gave the following rotational parameters: Aζ = 62218.96 MHz and xll= 87527.70 MHz. Investigation in v8= 2 state indicates thatl-resonance is observed for this molecule aroundk=xℓℓ+(A−B)−2AζAζ−(A−B)≈4.

Vibrational dynamics of alpha-quartz with neutral silicon vacancies

2017 ◽  
Vol 31 (33) ◽  
pp. 1750315
Author(s):  
A. Kislov
Keyword(s):  
Atomic Structure ◽  
Local Structure ◽  
Lattice Dynamics ◽  
Theoretical Study ◽  
Local Density ◽  
Vibrational States ◽  
Vibrational Dynamics ◽  
Localized Vibrations

The effects of neutrally charged silicon vacancies on the atomic structure and the lattice dynamics of [Formula: see text]-quartz were studied. This theoretical study focuses on modeling of the equilibrium local structure and the symmetrized local density of vibrational states. The frequencies of localized vibrations of A- and B-symmetries induced by silicon vacancies were obtained. The contribution of atoms located around silicon vacancies in the formation of localized symmetrized vibrations was analyzed.

scholarly journals The gravitational wave signal from isolated objects

2012 ◽  
Vol 8 (S290) ◽  
pp. 265-266
Author(s):  
Jinzhong Liu ◽  
Yu Zhang
Keyword(s):  
Energy Spectrum ◽  
Neutron Stars ◽  
Gravitational Wave ◽  
Theoretical Study ◽  
Population Synthesis ◽  
Science Project ◽  
Wave Signal ◽  
Deformation State ◽  
Motion Process ◽  
Observation Results

AbstractAccording to the theoretical study, a deformation object (e.g., a spinning non-axisymmetric pulsar star) will radiate a gravitational wave (GW) signal during an accelaration motion process by LIGO science project. These types of disturbance sources with a large bump or dimple on the equator would survive and be identifiable as GW sources. In this work, we aim to provide a method for exploring GW radiation from isolated neutron stars (NSs) with deformation state using some observational results, which can be confirmed by the next LIGO project. Combination with the properties in observation results (e.g., PSR J1748-2446, PSR 1828-11 and Cygnus X-1), based on a binary population synthesis (BPS) approach we give a numerical GW radiation under the assumption that NS should have non-axisymmetric and give the results of energy spectrum. We find that the GW luminosity of LGW can be changed from about 1040 erg/s – 1055 erg/s.

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