The behavior of an atom in a nonuniform magnetic field is analyzed, as well as the motion of a classical magnetic dipole (a spinning charged ball) and a rotating charged ring. For the atom it is shown that, while the magnetic field does no work on the electron-orbital contribution to the magnetic moment (the source of translational kinetic energy being the internal energy of the atom), whether ...

This paper presents an attempt to come to a natural field model of individual photons considered as finite entities and propagating along some distinguished direction in space in a consistent translational-rotational manner. The starting assumption reflects their most trustful property to propagate translationally in a uniform way along straight lines. The model gives correct energy-momentum ch...

Collisional energy transfer between rotational levels of ethylene oxide C2H4O, its deuterated species C2D4O and carbonyl sulfide OCS, has been investigated by means of microwave-microwave four-level double resonance. The results are in agreement with collisional selection rules which can be predicted in the weak collision limit. Collisionally induced transitions up to AJ = 4 have been detected ...

The report presents results of development of an accurate, physics-based model of vibrational androtational energy transfer in three-dimensional collisions of rotating diatomic molecules, applicable over awide range of collision energies and vibrational / rotational quantum numbers, and results of detailedkinetic modeling studies of state-to-state molecular energy transfer processes...

Introduction In this experiment you will examine the energetics of vibrational and rotational motion in the diatomic molecule HCl. The experiment involves detecting transitions between different molecular vibrational and rotational levels brought about by the absorption of quanta of electromagnetic radiation (photons) in the infrared region of the spectrum. The introductory discussion consists ...

The state-to-state vibrational predissociation (VP) dynamics of the hydrogen-bonded ammonia-water dimer were studied following excitation of the bound OH stretch. Velocity-map imaging (VMI) and resonance-enhanced multiphoton ionization (REMPI) were used to determine pair-correlated product energy distributions. Following vibrational excitation of the bound OH stretch fundamental, ammonia fragme...

Vibrational level structure in the S(0) (1)A(g) and S(1) (1)B(3u) states of pyrene was investigated through analysis of fluorescence excitation spectra and dispersed fluorescence spectra for single vibronic level excitation in a supersonic jet and through referring to the results of ab initio theoretical calculation. The vibrational energies are very similar in the both states. We found broad s...

The (v′ = 34, J′ = 14) level of the A∑u electronic state of Na2 has been selectively populated by excitation with the 578.1 nm line of a ring dye-laser with rhodamine 6G. Through collisions with (S1/2) Na atoms, energy is transferred to neighbouring rotational levels in Na2, and the density of these levels is determined by observing the fluorescence to the electronic ground state. From previous...

Isofulminic acid, HONC, the most energetic stable isomer of isocyanic acid HNCO, higher in energy by 84 kcal/mol, has been detected spectroscopically by rotational spectroscopy supported by coupled cluster electronic structure calculations. The fundamental rotational transitions of the normal, carbon-13, oxygen-18, and deuterium isotopic species have been detected in the centimeter band in a mo...