Infrared emission spectrum and potentials of $0_u^{+}$ and $0_g^{+}$ states of Xe${}_2$ excimers produced by electron impact

Abstract

We present an investigation of the Xe${}_2$ excimer emission spectrum observed in the near infrared range about 7800 cm${}^{-1}$ in pure Xe gas and in an Ar (90%) --Xe (10%) mixture and obtained by exciting the gas with energetic electrons. The Franck--Condon simulation of the spectrum shape suggests that emission stems from a bound--free molecular transition never studied before. The states involved are assigned as the bound $(3)0_u^{+}$ state with $6p[1/2{]}_0$ atomic limit and the dissociative $(1)0_g^{+}$ state with $6s[3/2{]}_1$ limit. Comparison with the spectrum simulated by using theoretical potentials shows that the dissociative one does not reproduce correctly the spectrum features.

4 pages, 3 figures, submitted to Phys. Rev. Lett

References in corpus (1)

• Environment influence on the IR fluorescence of Xe${}_2^{\ast }$ molecules in electron beam excited Ar--Xe mixture at high density

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