OSU Navigation Bar

The Ohio State University University Libraries Knowledge Bank

MULTIPLE RESONANCE SPECTROSCOPY OF THE $G^{1}\Pi_{g}$ AND $F^{1}\Sigma^{+}_{g}$ STATES OF $^{7}Li_{2}$ DETECTION OF PREDISSOCIATING $F^{1}\Sigma^{+}_{g}$ STATE LEVELS THROUGH ATOMIC SIDE FLUORESCENCE

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/13759

Show full item record

Files Size Format View
1996-WH-03.jpg 136.3Kb JPEG image Thumbnail of MULTIPLE RESONANCE SPECTROSCOPY OF THE $G^{1}\Pi_{g}$ AND $F^{1}\Sigma^{+}_{g}$ STATES OF $^{7}Li_{2}$ DETECTION OF PREDISSOCIATING $F^{1}\Sigma^{+}_{g}$ STATE LEVELS THROUGH ATOMIC SIDE FLUORESCENCE

Title: MULTIPLE RESONANCE SPECTROSCOPY OF THE $G^{1}\Pi_{g}$ AND $F^{1}\Sigma^{+}_{g}$ STATES OF $^{7}Li_{2}$ DETECTION OF PREDISSOCIATING $F^{1}\Sigma^{+}_{g}$ STATE LEVELS THROUGH ATOMIC SIDE FLUORESCENCE
Creators: Antonova, Stiliana; Urbanski, K.; Lyyra, A. M.; Li, Li
Issue Date: 1996
Publisher: Ohio State University
Abstract: Optical-Optical Double Resonance (OODR) was employed to excite rovibrational levels in the unknown upper portions of the G(1)$^{1}\Pi_{g}$ and F(4)$^{1}\Sigma^{+}_{g}$ states. Although both are singlet states and dissociate to the same atomic limit (2p+2p) they behave in significantly different ways. Vibrational levels as high as v = 48, which has rotationless energy within 1% from the dissociation energy, were observed in the $G^{1}\Pi_{g}$ state by detecting molecular fluorescence. In the $F^{1}\Sigma^{+}_{g}$ state all levels in the energy region above 2s+3s atomic limit were found to the strongly predissociated. This is due to interactions with the continuum of the $E^{1}\Sigma^{+}_{g}$ state which at long internuclear distance dissociates to the 2s + 3s atomic limit. Because of the very short lifetimes these levels were detected using atomic side fluorescence. A $C_{5}$ coefficient was determined from the last few outer turning points of the experimental RKR potential curve of the $G^{1}\Pi_{g}$ state. Rotational and vibrational dependence of the line width for the predissociated $F^{1}\Sigma^{+}_{g}$ state levels was investigated and a preliminary RKR curve which covers 99.6% of the potential well has been derived from experimental data.
Description: Author Institution: Physics Department, Temple University; Department of Modern Applied Physics, Tsinghua University
URI: http://hdl.handle.net/1811/13759
Other Identifiers: 1996-WH-03
Bookmark and Share