Analysis of the D′2g-A′2u transition in the molecular iodine by laser-induced-fluorescence Fourier-transform spectrometry

Observation and analysis of the 2g(1D) ion-pair state of I2: The g/u mixing between the 1u(1D) and 2g(1D) states

“…Table I summarizes the molecular parameters thus obtained for the 2 g ( 1 D) state. 9,24 The results are consistent with the intensity distributions of the 2 g ( 1 D) -AЈ 3 ⌸(2 u ) emission spectra. 23 We have calculated the Franck-Condon factors for the 2 g ( 1 D) -AЈ 3 ⌸(2 u ) system using the potential function of the 2 g ( 1 D) state in Table II and that of the AЈ 3 ⌸(2 u ) state reported previously.…”

“…Among them we can easily assigned the AЈ 3 ⌸(2 u ) state as the lower state of the 230 nm band using the known molecular constants, 9 and the vibrational numbers of the progression were determined as shown in Fig. Among them we can easily assigned the AЈ 3 ⌸(2 u ) state as the lower state of the 230 nm band using the known molecular constants, 9 and the vibrational numbers of the progression were determined as shown in Fig.…”

Analysis of the g−(3P1)–B ′3 Π(0u−) system of I2 by perturbation-facilitated optical–optical double resonance

“…D, the T e value is corrected by using the updating data of the 0 g Ϫ ( 3 P 1 ) -B Ј 3 ⌸(0 u Ϫ ) emission reported by Tellinghuisen. 12 In obtaining the vibrational parameters, we used 121 vibronic transitions originating from the 0 g Ϫ ( 3 P 1 ) state in the range vϭ5, 6,8,9,11,13, and 14. The standard deviation of the fitting was 0.36 cm Ϫ1 .…”

“…This system has been analyzed in emission, [1][2][3][4] and more recently characterized with scrutinizing precision by several laser excitation experiments. [5][6][7][8][9][10] The second most intense system lies at 288 nm, whose current information has only come from emission spectroscopy. This transition was tentatively assigned as 0 g Ϫ ( 3 P 1 ) -B Ј 3 ⌸(0 u Ϫ ) by Viswanathan and Tellinghuisen through the vibrational analysis of photographically recorded spectra for two isotope species, 127 I 2 and 129 I 2 .…”

Collision‐Induced E(0g+)−D(0u+) State‐to‐State Energy Transfer in I2

“…Molecular iodine has attracted special interest because of the quenching-induced laser transition at 340 nm, that was assigned as belonging to the 13/(2g) A/(2) transition [4,5]. All six electronic states in the first ion-pair cluster corresponding to the I -(1S) + I +(3p2) combination, have been investigated spectroscopically and accurate molecular constants were reported for the E(0g+)-state [6,7], the D'(2g)-State [8,9] and the D(0+)-state [10]. Through a number of investigations it was established that a delicate interplay of electronic relaxation occurs between the near-resonant E(0g+), D(0+), and D'(2g)ion-pair states.…”