The vibrational levels of diatomic molecules via Morse potentials are studied by means of the system confined in a spherical box of radius `. It is shown that there exists a critical radius `cr at which the spectrum of the usual unbounded system can be calculated to any desired accuracy. The results are compared with those of Morse’s classical solution which is based on the assumption that the ...

We have produced ultracold, polar RbCs* molecules via photoassociation in a laser-cooled mixture of Rb and Cs atoms. Using a model of the RbCs* molecular interaction which reproduces the observed rovibrational structure, we infer decay rates in our experiments into deeply bound X(1)Sigma(+) ground-state RbCs vibrational levels as high as 5 x 10(5) s(-1) per level. Population in such deeply boun...

Here we consider one of the basic models for many-body problems under an external field: the molecule ion H+2 under the effect of an external Stark-type potential. If we consider the vibrational energy levels of the first two electronic states of the molecule ion H+2 then, in the semiclassical limit and by means of a suitable modified Born-Oppenheimer method, we can prove that they switch to sh...

Two-dimensional electron energy-loss spectra of acrylonitrile are presented in the incident energy range 0.095-0.9 eV, where the incoming electron is temporarily captured in the lowest π* orbital. The cross section is plotted as a function of the incident electron energy that determines which vibrational resonant anion state is populated, and of the electron energy loss, that shows into which f...

Dimensional Franck-Condon Factors for the Acetylene [~ over A] [superscript 1]A[subscript u] — [~ over X] [superscript 1][+ over g] Transition. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. Park The MIT Faculty has made this article openly available. Please share how this access ...

in this paper the interior noise level of a vehicle due to structural vibration, named structure borne noise, as a part of nvh analysis has been investigated. first structural analysis is performed and vibrational behavior of structure carried out due to power plant excitations. then interior acoustic cavity response for such excitation and resultant noise is determined. vibrational analysis is...

For the lithium dimer we calculate cross sections for absorption of radiation from the vibrational-rotational levels of the ground X Σg electronic state to the vibrational levels and continua of the excited A Σu and B Πu electronic states. Theoretical and experimental data are used to characterize the molecular properties taking advantage of knowledge recently obtained from photoassociation spe...

A singular value decomposition based harmonic inversion signal processing scheme is applied to the semiclassical initial value representation (IVR) calculation of molecular vibrational states. Relative to usual IVR procedure of Fourier analysis of a signal made from the Monte Carlo evaluation of the phase space integral in which many trajectories are needed, the new procedure obtains acceptable...

Rotational perturbations are identified in Doppler-free two-photon spectra of the 14’ 9 and 14r 0 1’ 9 vibronic bands in ChH6. Evidence is found that Coriolis coupling between some of the rotational levels of two distinct vibrational states within St is the mechanism responsible. Thin coupling mechanism is thought to be responsible for irreversible intramolecular relaxation at higher excess ene...

The K-VV Auger spectrum of carbon monoxide (CO) excited by C 1s photoionization has been investigated with a novel electron-electron coincidence setup. The energy resolution is sufficiently high to resolve the vibrational energy levels of the core-ionized intermediate state and of most dicationic final states in the two-dimensional electron energy map. We demonstrate how the influence of vibrat...