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

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

2007-02-13

arxiv.org/abs/physics/0702104v1

Physics

Atomic Physics

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

Scientific paper

10.1088/0953-4075/40/24/001

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.

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