Two‐Photon Dissociation Spectroscopy of State‐Selected HCl⁺ and DCl⁺ Ions

Abstract

HCl+ and DCl+ ions were formed via the R(1) pump line of the f3delta2(v'=0)<--sigma+(v''=0) REMPI process. For these ions, the two-photon dissociation spectroscopy, resonance-enhanced via the A2sigma+(v')<--pi3/2(v''=0) transition, was investigated for various intermediate states of HCl+ (v'=4,5,6) and DCl+ (v'=6,7,8,9). From the analysis of the data, spectroscopic parameters of the X and the A states were derived (including the lambda-doubling in the X state and the spin-rotation coupling in the A state). Some of the parameters deviate considerably from literature data. The spectra provide clear evidence that the REMPI process employed for forming the ions has a very high rotational selectivity.

Symmetry-adapted-cluster configuration interaction study of the doublet states of HCl+: Potential energy curves, dipole moments, and transition dipole moments

“…2,11,[14][15][16][17]40,47 The spectroscopic constants constitute one criterion for applicability of the potentials derived in Sec. 2,11,[14][15][16][17]40,47 The spectroscopic constants constitute one criterion for applicability of the potentials derived in Sec.…”

“…During the last decade intensive studies of HCl molecule and HCl + ion were accomplished both experimentally [1][2][3][4][5][6][7][8][9][10][11][12] and theoretically. [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] The latter involves electronic structure calculations, [13][14][15][16][17] spectroscopic applications, [18][19][20][21][22] and laserdriving time-dependent processes, described by coupled Schrödinger equations [23][24][25][26][27] as well as by semiclassical approach with hopping algorithm.…”

“…28 HCl + ion ͓such as the classical examples H 2 and H 2 + ͑Refs. [23][24][25][26][27] There is a lot of information on HCl + from spectroscopy ͑e.g., threshold photoelectron spectroscopy 2,4,5,[9][10][11] ͒ and ab initio calculations. [23][24][25][26][27] There is a lot of information on HCl + from spectroscopy ͑e.g., threshold photoelectron spectroscopy 2,4,5,[9][10][11] ͒ and ab initio calculations.…”