Potential energy barriers observed in CdNe and CdAr van der Waals complexes excited to the first E1(<sup>3</sup>E<sup>+</sup> Rydberg state

J. Koperski; M. Czajkowski

doi:10.1117/12.544324

17 November 2003 Potential energy barriers observed in CdNe and CdAr van der Waals complexes excited to the first E1(³E⁺) Rydberg state

J. Koperski, M. Czajkowski

Author Affiliations +

Proceedings Volume 5258, IV Workshop on Atomic and Molecular Physics; (2003) https://doi.org/10.1117/12.544324
Event: IV Workshop on Atomic and Molecular Physics, 2002, Jurata, Poland

Abstract

The lowest E1(³E⁺) Rydberg state of the CdNe and CdAr van der Waals complex has been investigated by an optical-optical double resonance. Two A0⁺(5³P₁) electronic states have been used as intermediates for probing the final E1(6³S₁) state. We have measured the bound-bound laser excitation spectra of the E1"A0⁺ transition which correspond to the first observation of the bound CdNe/CdAr complexes in the E1 state. By means of Birge-Sponer linear plot of the vN-progression we estimated the spectroscopical parameters of the potential well of the Cd(6³S₁)!Ne(2¹S₀)/Ar(3¹S₀) interaction. On the other hand, in the excitation spectrum of the E1"B1 transition we observed the characteristic nodal structure of the bound-free absorption, which can be elucidated by the Franck-Condon projection of vibrational wave-function of the B1 state onto the "hump" of the E1-state potential as it was predicted in ab initio calculation of Czuchaj and Stoll. Assuming a Morse function as an adequate approximation of the inner E1-potential well we simulated the observed bound-bound spectra and hence, we obtained additional information regarding the location of the potential well minimum (R_e). Simple energy considerations made also possible an evaluation of the height of potential barrier predicted theoretically in the potential energy curve of the E1 state.

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J. Koperski and M. Czajkowski "Potential energy barriers observed in CdNe and CdAr van der Waals complexes excited to the first E1(³E⁺) Rydberg state", Proc. SPIE 5258, IV Workshop on Atomic and Molecular Physics, (17 November 2003); https://doi.org/10.1117/12.544324

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