Low Temperature Physics: 26, 752 (2000); https://doi.org/10.1063/1.1312403 (4 pages)
Физика Низких Температур: Том 26, Выпуск 9-10 (Сентябрь 2000), c. 1011-1015    ( к оглавлению , назад )

Spectroscopy of yttrium dimers in argon matrices

Li Fang, Xiaoyu Chen, Xiaole Shen, Yifei Liu, D. M. Lindsay and John R. Lombardi

Department of Chemistry and Center for Analysis of Structures and Interfaces (CASI) The City College of New York (CCNY), New York, NY10031, USA
E-mail: lombardi@scisun.sci.ccny.cuny.edu

Received February 5, 2000


The absorption and resonance Raman spectra of yttrium dimers (Y2) in argon matrices have been measured for the first time. The absorption spectrum (scattering depletion spectrum SDS) shows a weak, broad transition centered near 485 nm. Resonance Raman spectra obtained by exciting into this absorption band with several visible laser lines (465.5√496.5 nm) give a single, sharp progression with up to ten Stokes transitions. These data give we=184.4(4) cm-1, with we xe=0.30(3) cm-1, leading to a spectroscopic dissociation energy of De=3.5(4) eV. Comparison of our results with several ab initio calculations adds confirmation to the assignment of the ground state of Y2 to be 1g+ state.

78.30.Hv - Other nonmetallic inorganics
71.55.Ht - Other nonmetals