Absorption and emission spectra of Ca2 in solid krypton |
| |
Authors: | John C Miller Lester Andrews |
| |
Institution: | Chemistry Department, University of Virginia, Charlottesville, Virginia 22901, USA |
| |
Abstract: | The calcium van der Waals molecule, Ca2, has been formed by codepositing calcium and krypton atoms on a substrate at 12 K. Absorption spectra revealed a structured band at 666 nm with 117 ± 2 cm? spacings. Calcium-44 isotopic spectra confirmed the assignment and located the band origin at 14 432 ± 4 cm?1. Emission spectra, pumping the 11 ← 0 absorption, exhibited a very strong 14 000 cm?1 band with 78 ± 2 cm?1 spacings to the band origin and unrelaxed emission with 78 ± 2 and 117 ± 2 cm?1 spacings above the band origin from v′ levels up to 6. The transition 1∑+u(1S + 1P) ← 1∑+g (1S + 1S) and the bonding in ground and excited Ca2 states fit a simple molecular orbital model. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|