LIF signal growth analysis for Rb oligomers as a function of pickup conditions, the latter parametrized by the LT detector current . Squares: Monomer signal (, full: SW optics, hollow: MW optics set); stars: Dimer (; circles: Trimer (hollow: , full ). The thick solid lines represent the best fit using the Vongehr/Kresin model [Eq. (2)], the dashed lines the best fit result using the Poisson model [Eq. (1)].
Comparison of a LIF and MSBD spectrum of the transition. Gray line: LIF (thin, black line: Smoothed); thick, orange line: MSBD (smoothed).
Band of electronic excitations of homo- and heteronuclear K and Rb trimers by QMS scans. Upper panel: Gray line: LIF excitation of overall band; black line: Summation over single trimer signals. Middle panel: Homonuclear trimer spectra. Blue, dashed: MSBD spectrum; light green, solid: (beam depletion from surface ionization). Lower panel: MSBD spectra of heteronuclear trimers. Dark green, dashed: ; cyan, solid: .
Scheme of V-type double resonance tagging. (a) Spatial arrangement, (b) on-resonance level scheme, and (c) off-resonance level scheme.
Decomposition of overlapping spectra of Rb and K molecules. Panel (a): Overlapping K and Rb molecular bands. Panel (b): Separated spectra. Gray: Spectra of and transitions, with simulated dimer spectra. Black: and spectra, measured by depletion of known trimer bands. Panel (c): LIF intensity at depending on depletion laser power. Panel (d): VTDR tagging— LIF signal at with and without depletion laser (set to the maximum of the band at ).
LIF spectra of electronic excitations of homo- and heteronuclear K and Rb trimers.
Calculated and measured vertical transition energies from ground state ( in homonuclear, in heteronuclear alkali trimers). When a band consists of several peaks, the experimental value refers to the position of the lowest-energy maximum.
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