The structure of the lowest electronic Rydberg state of CdAr complex determined by laser double resonance method in a supersonic jet-expansion beam

Structure of vibrational bands of theE3Σ+(63Urbańczyk1, Strojecki2, Koperski3 2011Chemical Physics Letters12000View full textAdd to dashboardCite

“…Furthermore, the potential barrier becomes smaller when going from Rg = Ne [5] through Ar [3] to Kr [2]. However, the barrier converts gradually into an outer shallow minimum which eventually vanishes at yet larger R. A similar conclusion, with respect to the complex shape of the E 3 R + -state potential in HgNe and HgAr, was drawn in [6][7][8][9], and it was based entirely on experimental observations and simulations of the spectra.…”

“…Studies of ZnAr [1], CdKr [2], CdAr [3,4], CdNe [5], HgAr [6][7][8], HgNe [6,9] performed using an optical-optical double resonance (OODR) and free-jet expansion methods allowed exploring a structure of the E 3 R + (n 3 S 1 )-state interatomic potentials (n = 6 and 7 6 n 6 10 for Cd and Hg, respectively) in relatively large range of interatomic separations R. To facilitate the excitation process, two intermediate, A 3 P 0 þ (5 3 P 1 ) and B 3 R þ 1 (5 3 P 1 ), electronic energy states were employed. The findings for CdAr and HgAr were supplemented by those of Bennett and Breckenridge [10] who investigated the E 3 R + (6 3 S 1 ) state using method of laser vaporization in a free-jet expansion beam being a source of the b 3 G 2 intermediate state.…”

“…In recent articles on CdKr, CdAr and CdNe in their lowest Rydberg E 3 R + state [2,3,5], Koperski and Czajkowski corroborated theoretical results of [14,15]. Those low-resolution experiments were based on the OODR method using two, A 3 P 0 þ and B 3 R þ 1 intermediate states to explore the structure of the E 3 R + -state potential in large interval of R. Earlier, in a similar way Onda et al [6] and…”

“…According to [2,3,5], heavier the Rg atom the E 3 R + -state potential becomes more strongly attractive with decreasing R (see e.g., Figures 1 and 2). Furthermore, the potential barrier becomes smaller when going from Rg = Ne [5] through Ar [3] to Kr [2].…”

“…In our earlier studies of the E 3 R + -Rydberg state potential of CdNe [5], CdAr [3] and CdKr [2], the excitation from the X 1 R þ 0 þ 0009-2614/$ -see front matter Ó 2010 Elsevier B.V. All rights reserved. doi:10.1016/j.cplett.2010.12.085 (t = 0) occurred via one of the two intermediate states: A 3 P 0 þ using t 00 = 0,1 (CdNe), t 00 = 5 (CdAr) and t 00 = 9 (CdKr) or B 3 R þ 1 using t 00 = 0,1 (CdNe), t 00 = 0,1,2 (CdAr) and t 00 = 1 (CdKr).…”