The effect of Li+Li− ion-pair interaction on the vibrational energy spectrum of the second excited state of Li2 of 1<i>Σ</i>
                  <i>g</i>+ symmetry

Konowalow, Daniel D.; Fish, James L.

doi:10.1063/1.443534

Cited by 23 publications

(1 citation statement)

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“…Wavelengths were calibrated by an external etalon (FSR = 0.65t cm-t) and determined absolutely from the optogalvanic spectra of argon and neon [24]. The first few observed levels display the increase in vibrational energy level spacing characteristic for states dominated by an ion-pair interaction [25]. In this case the originating K2 ~ ions were mass selected in the quadrupole mass spectrometer, Figure 1 shows an example of the rotationally resolved excitation spectrum of K 2 recorded when the laser was operated with a linewidth of 0.04 cm-1.…”

Section: Methodsmentioning

confidence: 99%

Observation and partial characterization of the 21 Σ+ u state in K2

Kowalczyk

Katern

Engelke

1990

Z Phys D - Atoms, Molecules and Clusters

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Laser excitation spectroscopy is performed on K2 molecules produced in a supersonic molecular beam. 83 vibrational levels of the 21 X+ state are observed under conditions permitting rotational resolution. The 21N + state is partially analysed and its preliminary potential curve is compared with theoretical calculations. 33.20.Kf; 35.20.Pa potential [20]. In the present experiment we ol~served for the first time a direct laser excitation of the 21Z,+ state in K2. The use of the supersonic beam of K2 molecules in conjunction with spectrally narrow laser light allowed us to obtain rotationally resolved excitation spectra. Some 83 vibrational levels were characterized and used to construct a partial potential curve of the investigated state. PACS:

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Section: Methodsmentioning

confidence: 99%