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періодичних видань НАН України
періодичних видань НАН України
Spectroscopy of yttrium dimers in argon matrices
Репозиторій DSpace/Manakin
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Spectroscopy of yttrium dimers in argon matrices
Тема:
Low-Temperature Physics and Chemistry in Cryomatrice
Інший ID:
PACS: 78.30.Hv, 71.55.Ht
Посилання:
Spectroscopy of yttrium dimers in argon matrices / Li Fang, Xiaoyu Chen, Xiaole Shen, Yifei Liu, D.M. Lindsay, John R. Lombardi // Физика низких температур. — 2000. — Т. 26, № 9-10. — С. 1011-1015. — Бібліогр.: 23 назв. — англ.
Дата:
2000
Переглядів:
757
Завантажень:
483
Анотація:
The absorption and resonance Raman spectra of yttrium dimers (Y₂) in argon matrices are 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 ωe=184.4(4) cm⁻¹, with ωexe=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 the ¹Σg⁺ state.
