Absorption studies of excimer transitions in Cs-noble-gas and Rb-noble-gas molecules

Absorption and emission studies of the (51S0)–1u(63S1) transition in the Cd dimer

“…Therefore, the band profile observed in absorption can be considered to be a thermally-averaged translational ro-vibronic spectrum of a weakly bound molecule (or quasimolecule) and interpreted in terms of the quasimolecular theory of spectral line wings and satellites associated with optical collisions [21]. This interpretation, being applicable to both the asymptotically allowed and forbidden electronic transitions, has been successfully used in the past for deriving information on the interaction potentials and the dipole transition moment function, D (R), involved [22][23][24]. These data can be directly obtained from the band spectrum only in the framework of the so-called quasi-static approximation of the above-mentioned theory.…”

Study of collision-induced absorption in dipole electronic transitions of alkali-rare gas atom pairs

“…However, in order that the profiles calculated here might be compared with the ones measured experimentally [7] (presumably the experiments were done under not too strong radiation field conditions) the electric field E 0 used in the present calculation was sufficiently low so that the perturbative formalism would be valid (E o = 103 V/cm ~-1. (1/2)62Sv211)o1(1/2)521~t e > Fig.…”

“…On introducing the dimensionless variable z='~t/a o with -O=(3kT/#) 1/2 calculated at the experimental temperature T=371 ~ [7], (a 0 is Bohr radius), (17), (25) and (26) (23)) could be obtained after integrating P over impact parameter*.…”

“…Both the theoretical and experimental studies 1-1, 2] indicate that although the alkali-rare gas atom pairs do repel each other (except for a very weak Van der Waals attraction) when the alkali atom is in its ground state, the two atoms may bind together to form a molecule when the alkali atom is in an excited P state. The recently observed new emission [3][4][5] and absorption [6][7][8][9] bands indicate that such bound states may also be formed when the * Work supported by the Polish Ministry of Science, Higher Education and Technology project M.R.I.7 alkali atom is in an excited S or D state. These bands also show that forbidden transitions of isolated alkali atoms become allowed transitions when the alkali atom is close to a rare gas atom.…”

Monte Carlo study of the optical properties of the KXeN polyatomic exciplexes

“…It has been studied widely from the viewpoint of atomic and molecular physics, and also quantum optics because this dimer can be used for laser material. [1][2][3][4] A molecule which consists of an electronically excited atom and several other atoms is called an exciplex. The properties of this molecule, however, have not been studied in detail.…”