Interatomic potentials for the ground state X 10+ and the two excited states 31, 30+ of the intercombination cadmium line 326.1nm broadened by Kr pressure

The intercombination Cd line 326.1nm and van der Waals potential coefficients for pure Cd and Cd–inert gas systems

“…In the vicinity of this band two linear regions with slope (À3/2) are observed for the (Cd-inert gases) system. The first one close to the line center may be interpreted as the quasi-static line wing which is formed by transitions between the ground state 1 0 + and excited states 3 0 + as well as 3 1, while the second corresponds to the transition to the excited 3 0 + state only as was mentioned in the theoretical part and established in [2][3][4][5][6][7]. The van der Waals coefficients DC 0 6 and DC 1 6 originating due to these states are presented in Table 1.…”

“…Generally for Cd-rare gases such a linear dependence of the log K m n ðDmÞ is observed in two regions of the near red wing profile [2][3][4][5][6][7]:…”

“…Recently, there have been numerous spectroscopic determinations of interatomic potentials of the ground and excited states of these systems [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15].…”

Broadening and shift of the inter-combination spectral line of Cd 326.1 nm perturbed by Kr

“…During the past several decades, there have been numerous investigations of vdW molecules, especially for pure cadmium and cadmium inert gas systems [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. There are some papers reporting experimental and theoretical studies [10][11][12][13][14][15][16][17][18][19][20] that have been performed for obtaining the interatomic potentials for Cd + Kr using the Cd inter-combination spectral line at 326.1 nm (5 3 P 1 → 5 1 S 0 ).…”

“…The broadening and shift coefficients β and δ for the Cd line have been obtained experimentally and theoretically using the Coulomb approximation (CA) for the vdW and Lennard-Jones (LJ) potentials. Also, in this work, an attempt was made to verify the potential curves obtained by different experimental and theoretical methods [10][11][12][13][14][15][16][17][18][19][20]. These analyses use the pressure broadening and shift coefficients (β and δ) of the same spectral line perturbed by Kr using the classical theory of Lindholm [21] and Foley [22].…”