The photoabsorption cross section of the Ar<sub>2</sub>F excimer in the lowest excited state (4<sup>2</sup>Γ), which is produced by exciting an Ar/F<sub>2</sub> gas mix by a short-pulse relativistic electron beam, has been determined at 248 nm to be (3.3 ± 1) × 10<sup>−18</sup> cm<sup>2</sup> by observing the depletion of Ar<sub>2</sub>F fluorescence induced by the irradiation of a short-pulse KrF laser beam. Observation of ArF fluorescence shows that the Ar<sub>2</sub>F excimer is directly dissociated into ArF and Ar by absorbing a 248-nm photon.
© 1988 Optical Society of America
Kohzo Hakuta, Susumu Miki, and Hiroshi Takuma, "Photoabsorption cross-section measurement of Ar2F excimer at 248 nm," J. Opt. Soc. Am. B 5, 1261-1265 (1988)