High resolution investigation of the 7 μm region of the ethane spectrum

被引：15

作者：

di Lauro, Carlo ^{[2
]}

Lattanzi, Franca ^{[2
]}

Brown, Linda R. ^{[1
]}

Sung, Keeyoon ^{[1
]}

Vander Auwera, Jean ^{[3
]}

Mantz, Arlan W. ^{[4
]}

Smith, Mary Ann H. ^{[5
]}

机构：

[1] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[2] Univ Naples Federico II, I-80131 Naples, Italy

[3] Univ Libre Bruxelles, Serv Chim Quant & Photophys, B-1050 Brussels, Belgium

[4] Connecticut Coll, Dept Phys Astron & Geophys, New London, CT 06320 USA

[5] NASA, Langley Res Ctr, Sci Directorate, Hampton, VA 23681 USA

来源：

PLANETARY AND SPACE SCIENCE | 2012年 / 60卷 / 01期

关键词：

Ethane; Theoretical Hamiltonian; Infrared; Line positions; Intensities; Molecular database; INFRARED-SPECTRUM; FOURIER-TRANSFORM; HOT TRANSITIONS; C2H6; BAND; SPLITTINGS; NU(4)+NU(12); INTENSITIES; PARAMETERS; CM(-1);

D O I：

10.1016/j.pss.2011.01.008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Building upon previous studies, we re-investigated the ethane spectrum between 1330 and 1610 cm(-1) by combining unapodized spectra obtained at room temperature with a Bruker Fourier transform spectrometer (FTS) in Brussels and at 131 K with a Bruker FTS in Pasadena. The maximum optical path differences (MOPD) of the two datasets were 450 and 323.7 cm, corresponding to spectral resolutions of 0.0020 and 0.0028 cm(-1), respectively. Of the 15,000 lines observed, over 4592 transitions were assigned to the v(6) (at 1379 cm(-1)), vs (at 1472 cm(-1)), v(4) + v(12) (at 1481 cm(-1)) and 2v(4)+v(9) (at 1388 cm(-1)) bands, and another 1044 transitions were located for the v(4)+v(8) - v(4) hot band (at 1472 cm(-1)). Our new analysis included an improved implementation of the Hamiltonian calculation needed to interpret the complex spectral structures caused by numerous interactions affecting these four modes of vibration. From these results, we created the first line-by-line database containing the molecular parameters for over 20,000 (C2H6)-C-12 transitions at 7 mu m. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：93 / 101

页数：9

共 26 条

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