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High-spin alkali trimers on helium nanodroplets: Spectral separation and analysis
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10.1063/1.2906120
/content/aip/journal/jcp/128/15/10.1063/1.2906120
http://aip.metastore.ingenta.com/content/aip/journal/jcp/128/15/10.1063/1.2906120

Figures

Image of FIG. 1.
FIG. 1.

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)].

Image of FIG. 2.
FIG. 2.

Comparison of a LIF and MSBD spectrum of the transition. Gray line: LIF (thin, black line: Smoothed); thick, orange line: MSBD (smoothed).

Image of FIG. 3.
FIG. 3.

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: .

Image of FIG. 4.
FIG. 4.

Scheme of V-type double resonance tagging. (a) Spatial arrangement, (b) on-resonance level scheme, and (c) off-resonance level scheme.

Image of FIG. 5.
FIG. 5.

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 ).

Image of FIG. 6.
FIG. 6.

LIF spectra of electronic excitations of homo- and heteronuclear K and Rb trimers.

Tables

Generic image for table
Table I.

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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/content/aip/journal/jcp/128/15/10.1063/1.2906120
2008-04-21
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: High-spin alkali trimers on helium nanodroplets: Spectral separation and analysis
http://aip.metastore.ingenta.com/content/aip/journal/jcp/128/15/10.1063/1.2906120
10.1063/1.2906120
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