Excitation spectrum of the A0+(5 3P1), B1(5 3P1)←X0+(5 1S0) transitions in the CdHe van der Waals molecule: Spectroscopic characterization of the X0+, A0+, and B1 electronic energy states

摘要: The first observation of an excitation spectrum the A0+(5 3P1), B1(5 3P1)←X0+(5 1S0) transitions in CdHe van der Waals molecule is reported. A continuous molecular-jet-expansion beam seeded helium was crossed with a pulsed-laser produced by Nd:YAG laser-pumped-dye laser. dye laser frequency doubled using KDP-C crystal and tuned to vicinity 5 3P1↔5 1S0 resonance transition atomic cadmium (λres≈3262.0 A). assignment vibrational bands obtained aid rigorous computer simulation A0+←X0+ B1←X0+ transitions. analysis yielded potential parameters molecule: De″(X0+)=14.2 cm−1, ωe″(X0+)=9.6 ωe″xe″(X0+)=1.63 cm−1 for ground state, De′(A0+)=41.2 ωe′(A0+)=20.0 ωe′xe′(A0+)=2.4 as well De′(B1)=6.1 ωe′(B1)=3.6 ωe′xe′(B1)=0.53 excited states. From procedure differences between equilibrium internuclear separatio...