Electronic spectroscopy of carbon chains and relevance to astrophysics

被引：32

作者：

Kirkwood, DA ^{[1
]}

Linnartz, H ^{[1
]}

Grutter, M ^{[1
]}

Dopfer, O ^{[1
]}

Motylewski, T ^{[1
]}

Pachkov, M ^{[1
]}

Tulej, M ^{[1
]}

Wyss, M ^{[1
]}

Maier, JP ^{[1
]}

机构：

[1] Univ Basel, Inst Phys Chem, CH-4056 Basel, Switzerland

来源：

FARADAY DISCUSSIONS | 1998年 / 109卷

关键词：

D O I：

10.1039/a800072g

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Laboratory measurements of electronic transitions in carbon chains are presented. Guided by the results found in neon matrices, gas-phase spectra have been obtained with two different experimental approaches. Electronic transitions of neutral carbon chains are detected in a supersonic slit jet plasma by cavity ring-down (CRD) spectroscopy, and those of mass-selected anions are probed by resonant two-colour electron photodetachment. The successful combination of matrix and gas-phase experiments is demonstrated for the examples of C6H and C14H-. These, and other previous measurements on electronic transitions of long carbon chains in the gas phase, are compared with the tabulated wavelengths of the diffuse interstellar bands. In the case of the A (2)Pi(u)-X (2)Pi(g) transition of C-7(-) the origin and three intense bands in the gas-phase spectrum match, within +/- 0.2 nm error limits, diffuse interstellar bands which have comparable FWHMs and equivalent widths.

引用

页码：109 / 119

页数：11

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