Low-excited f-, g- and h-states in Au, Ag and Cu observed by Fourier-transform infrared spectroscopy in the 10007500 cm1 region

S Civiš (1) , I Matulková (1) , J Cihelka (1) , P Kubelík (1) , K Kawaguchi (2) , V E Chernov (3)

1 J. Heyrovsk Institute of Physical Chemistry
2 Faculty of Science
3 Voronezh State University

The infrared emission spectra of Au, Ag and Cu resulting from the laser ablation of metal targets in a vacuum was recorded using time-resolved Fouriertransform spectroscopy in the 1200-1600, 1900-3600, 4100-5000 and 5200-7500 cm -1 ranges with a resolution of 0.017 cm −1. The majority of the observed lines correspond to transitions between low-excited Rydberg (Nd 10)nl j states of Cu (N = 3), Ag (N = 4) and Au (N = 5) with a principal quantum number n = 4..10 ; the most prominent lines being due to transitions between the states with high orbital momenta l = 3..5. This study reports 32 new lines of Au, 12 of Ag and 20 of Cu (with uncertainties of 0.0003-0.03 cm −1). From the lines observed here and in our previous works we extract revised energy values for 85 energy levels (uncertainty 0.01- 0.03 cm −1) of which 8 levels of Au, 3 of 23 Ag and 4 of Cu are reported for the first time. These newly-reported levels have high orbital momentum l = 3, 4, 5.

Mots clés: Time-resolved Fourier transform; infrared spectroscopy; atomic ablation; Rydberg states; dipole transition matrix elements

S Civiš, I Matulková, J Cihelka, P Kubelík, K Kawaguchi, et al.. Low-excited f-, g- and h-states in Au, Ag and Cu observed by Fourier-transform infrared spectroscopy in the 10007500 cm1 region. Journal of Physics B: Atomic, Molecular and Optical Physics, 2011, 44 (10), pp.105002. ⟨10.1088/0953-4075/44/10/105002⟩. ⟨hal-00617385⟩