Analysis of the 4800-Å absorption band of Cs2 by the classical method

Spectral and Time-Resolved Studies of Green Cs2Fluorescence

“…Since the main contrfbutfon to the transition probability comes from internuclear distances close to the classical turning points of the vibrating oscillator, several lines originating in the vicinity of the outer turning points in levels situated in the above-defined energy region have close wave numbers and sum up [35] forming a structure observed under low resolution as the 522 nm band. With a similar interpretation of the absorption peak at 522 nn by Tellinghuisen and Moeller [7], we conclude that the same system of levels is involved in both fluorescence and absorption. The strong bands of Sec.…”

“…The assignments of T', υ0 ", Jo and υi" (i = 1,2 ...) are reached for each progression [20] following the application of a least-squares procedure based on Eqs. (6), (7). Satisfactory agreement with respective (λl as = 465.8, 472.7, 476.5 nm) results of Amiot was obtained.…”

“…The absorption band centered at 480 nm [3][4][5][6] is accompanied at its long wavelength limit by a distinct peak at 522.3 nm. Tellinghuisen and Moeller [7] assumed that both structures originate from a single electronic transition and that the 522.3 nm peak corresponds to the minimum in the difference potential. Excitation caused by blue laser light produces a strong green emission [8,9].…”

Spectral Study of Caesium Dimer Excited with 476.5, 472.7, 465.8 and 457.9 nm Argon Ion Laser Lines

“…In [12] the authors have established the energy difference between the relevant regions of the postulated excited-state and the ground-state potentials to be 19140 cm-1 . Our results show that the segments of the potential curves of both states which are active in creating the 522 nm band are almost parallel to each other and separated by Ca.…”

“…In the red-wavelength end of this band a narrow satellite at 522.3 nrn can be seen. Tellinghuisen and Moeller [12] interpreted the 480 nm band, including the satellite, on the basis of computational simulation of absorption spectra by assuming the existence of an (unknown at that time) single excited-state such that the difference potential (excited-state minus ground-state) reaches a minimum of 19140 cm-1 at some internuclear distance R. This minimum, of depth equal to the inverse of the satellite central wavelength, was assumed to be the origin of the satellite band.…”