CH-He和CH-He复合物的转动-振动光谱学
Rovibrational spectroscopy of the CH-He and CH-He complexes.
作者信息
Salomon Thomas, Doménech José L, Schmid Philipp C, Michael Ernest A, Schlemmer Stephan, Asvany Oskar
机构信息
I. Physikalisches Institut, Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany.
Instituto de Estructura de la Materia (IEM-CSIC), Serrano 123, 28006 Madrid, Spain.
出版信息
J Mol Spectrosc. 2021 Feb 8;377. doi: 10.1016/j.jms.2021.111421. eCollection 2021 Mar.
A cryogenic 22-pole ion trap apparatus is used in combination with a table-top pulsed IR source to probe weakly bound CH-He and CH-He complexes by predissociation spectroscopy at 4 K. The infrared photodissociation spectra of the C-H stretching vibrations are recorded in the range of 2720-2800 cm. The spectrum of CH-He exhibits perpendicular transitions of a near prolate top with a band origin at 2745.9 cm, and thus confirms it to have a T-shaped structure. For CH-He, the C-H stretch along the symmetry axis of this oblate top results in parallel transitions.
一个低温22极离子阱装置与一个桌面脉冲红外源结合使用，通过在4K下的预解离光谱来探测弱束缚的CH-He和CH-He复合物。C-H伸缩振动的红外光解离光谱记录在2720-2800厘米的范围内。CH-He的光谱显示出一个近长椭球体的垂直跃迁，带源在2745.9厘米处，从而证实它具有T形结构。对于CH-He，沿着这个扁球体对称轴的C-H伸缩导致平行跃迁。
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