ELECTRONIC TRANSITIONS OF JET-COOLED SiC2, Si2Cn (n=1-3), Si3Cn (n=1,2), AND SiC6H4 BETWEEN 250 AND 710 nm

被引：20

作者：

Steglich, M. ^{[1
]}

Mater, J. P. ^{[1
]}

机构：

[1] Univ Basel, Dept Chem, CH-4056 Basel, Switzerland

来源：

ASTROPHYSICAL JOURNAL | 2015年 / 801卷 / 02期

基金：

瑞士国家科学基金会;

关键词：

dust; extinction; ISM: lines and bands; ISM: molecules; methods: laboratory: molecular; molecular data; SILICON-CARBON CLUSTERS; TRANSFORM INFRARED OBSERVATION; CORRELATED MOLECULAR CALCULATIONS; GAUSSIAN-BASIS SETS; VIBRATIONAL-SPECTRA; LASER SPECTROSCOPY; PHOTOELECTRON-SPECTROSCOPY; ASTRONOMICAL DETECTION; ROTATIONAL SPECTRUM; MATRIX-ISOLATION;

D O I：

10.1088/0004-637X/801/2/119

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Electronic transitions of the title molecules were measured between 250 and 710 nm using a mass-resolved 1 + 1' resonant two-photon ionization technique at a resolution of 0.1 nm. Calculations at the B3LYP/aug-cc-pVQZ level of theory support the analyses. Because of their spectral properties, SiC2, linear Si2C2, Si3C, and SiC6H4 are interesting target species for astronomical searches in the visible spectral region. Of special relevance is the Si-C-2-Si chain, which features a prominent band at 516.4 nm of a strong transition (f = 0.25). This band and one from SiC6H4 at 445.3 nm were also investigated at higher resolution (0.002 nm).

引用

页数：10

共 67 条

[31] A catalog of diffuse interstellar bands in the spectrum of HD 204827
Hobbs, L. M.
York, D. G.
Snow, T. P.
Oka, T.
Thorburn, J. A.
Bishof, M.
Friedman, S. D.
McCall, B. J.
Rachford, B.
Sonnentrucker, P.
Welty, D. E.
[J]. ASTROPHYSICAL JOURNAL, 2008, 680 (02) : 1256 - 1270
[32] INFRARED MATRIX-ISOLATION SPECTRUM OF THE SI2C MOLECULE
KAFAFI, ZH
HAUGE, RH
FREDIN, L
MARGRAVE, JL
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1983, 87 (05) : 797 - 800
[33] AN EXPERIMENTAL AND THEORETICAL STUDY OF THE IONIZATION ENERGIES OF SiC2Hx (x=0, 1, 2) ISOMERS
Kaiser, Ralf I.
Krishtal, Sergey P.
Mebel, Alexander M.
Kostko, Oleg
Ahmed, Musahid
[J]. ASTROPHYSICAL JOURNAL, 2012, 761 (02)
[34] Laboratory studies on the infrared absorptions of hydrogenated carbon-silicon clusters:: Directing the identification of organometallic SiCHx species toward IRC+10216
Kaiser, RI
Osamura, Y
[J]. ASTROPHYSICAL JOURNAL, 2005, 630 (02) : 1217 - 1223
[35] LABORATORY EXCITATION OF THE BLUE-GREEN BANDS OBSERVED IN THE SPECTRA OF N-TYPE STARS
KLEMAN, B
[J]. ASTROPHYSICAL JOURNAL, 1956, 123 (01) : 162 - &
[36] Optical spectra of the silicon-terminated carbon chain radicals SiCnH (n=3,4,5)
Kokkin, D. L.
Reilly, N. J.
Fortenberry, R. C.
Crawford, T. D.
McCarthy, M. C.
[J]. JOURNAL OF CHEMICAL PHYSICS, 2014, 141 (04)
[37] THE ROTATIONAL SPECTRA OF 29SiC2 AND 30SiC2
Kokkin, D. L.
Bruenken, S.
Young, K. H.
Patel, N. A.
Gottlieb, C. A.
Thaddeus, P.
McCarthy, M. C.
[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2011, 196 (02)
[38] Fourier transform infrared identification of the ν5(σu) fundamental of SiC5Si
Le, T. H.
Rittby, C. M. L.
Graham, W. R. M.
[J]. JOURNAL OF CHEMICAL PHYSICS, 2014, 141 (04)
[39] Fourier transform infrared isotopic study of SiC5: Identification of the v4(σ) mode
Le, T. H.
Rittby, C. M. L.
Graham, W. R. M.
[J]. JOURNAL OF CHEMICAL PHYSICS, 2014, 140 (06)
[40] DEVELOPMENT OF THE COLLE-SALVETTI CORRELATION-ENERGY FORMULA INTO A FUNCTIONAL OF THE ELECTRON-DENSITY
LEE, CT
YANG, WT
PARR, RG
[J]. PHYSICAL REVIEW B, 1988, 37 (02): : 785 - 789

← 1 2 3 4 5 6 7 →