The rovibrational spectra of molecules dissolved in liquid 4He nanodroplets display rotational structure. Where resolved, this structure has been used to determine a temperature that has been assumed to equal that of the intrinsic excitations of the helium droplets containing the molecules. Consideration of the density of states as a function of energy and total angular momentum demonstrates th...

The purely rotational microwave spectrum of HCN and DCN embedded in He nanodroplets has been measured. The J50→1 transitions for both molecules have been recorded at 72.21 and 59.90 GHz, respectively. The increase in moment of inertia due to the presence of liquid helium, which the assumption of adiabatic following of the helium density predicts should be almost identical for both molecules, is...

We have used continuous-wave cavity ring-down and femto-Fourier transform-cavity-enhanced absorption spectrometers to record the spectrum of the OH-stretching + CH-stretching (ν1 + ν2) combination band in trans-formic acid, with origin close to 6507 cm(-1). They, respectively, allowed resolving and simplifying the rotational structure of the band near its origin under jet-cooled conditions (Tro...

The cranked relativistic mean field theory is applied for a detailed investigation of eight superdeformed rotational bands observed in Tb. It is shown that this theory is able to reproduce reasonably well not only the dynamic moments of inertia J (2) of the observed bands but also the alignment properties of the singleparticle orbitals. In the relativistic mean field (RMF) theory the nucleus is...

In this article, a widely used building model, comprised of uniform coupled flexural and shear beams, herein improved by allowing for the effects rotational inertia. Closed-form solutions in terms trigonometric hyperbolic functions are obtained, explicit formulation period ratios, modal participation factors (MPFs), mode shapes, shape derivatives based solely on displacement response, without c...

Molecular dynamic simulation program has been developed which can be used to model the static and dynamic properties of molecular nitrogen (N2) under high pressure. The dynamics of the N2 molecules accounts precisely both translational and rotational degrees of freedom. The rotational motion of the N2 molecule is approximated assuming constant moment of inertia of the nitrogen molecule. The pro...

The large-scale deployment of sustainable energy sources has become a mandatory goal to reduce pollution from electricity production. As photovoltaic (PV) plants replace conventional synchronous generators (SGs), their significant inherent rotational inertia characteristics are reduced. high penetration PV results in reduced system inertia, leading frequency instability. Virtual inertial contro...

The rovibrationally resolved Fourier transform (FT) far infrared (FIR) spectra of two intermolecular librations of (HF)3, namely the in-plane ν6 and out-of-plane ν4 bending fundamentals centered, respectively, at about 494 cm(-1) and 602 cm(-1), have been recorded for the first time under jet-cooled conditions using the supersonic jet of the Jet-AILES apparatus. The simultaneous rotational anal...

Abstract. We propose a many-body wave function that exhibits both diagonal and off-diagonal long-range order. Incorporating short-range correlations due to interatomic repulsion, this wave function is shown to allow condensation of zero-point lattice vibrations and phase rigidity. In the presence of an external velocity field, such a perfect crystal will develop non-classical rotational inertia...