Two-photon-excited fluorescence spectroscopy of atomic fluorine at 170 nm.
We report what is to our knowledge the first two-photon-excited fluorescence spectroscopy of atomic fluorine. A doubled dye laser at 286 nm is Raman shifted in H(2) to 170 nm (sixth anti-Stokes order) to excite ground-state (2)P degrees (J) fluorine atoms to the (2)D degrees (J) level. The fluorine atoms are detected by one of two methods: observing the fluorescence decay to the (2)P(J) level or observing F(+) production through the absorption of an additional photo by the excited atoms. We have measured relative two-photon absorption cross sections to and the radiative lifetimes of the (2)D degrees (J) states.
Herring
G C
GC
Dyer
M J
MJ
Jusinski
L E
LE
Bischel
W K
WK