標題: | Detection of vibration-rotational band 5-0 of (CO)-C-12-O-16 X (1)Sigma(+) with cavity ringdown absorption near 0.96 mu m |
作者: | Chung, CY Ogilvie, JF Lee, YP 應用化學系 應用化學系分子科學碩博班 Department of Applied Chemistry Institute of Molecular science |
公開日期: | 8-Sep-2005 |
摘要: | We have recorded extremely weak absorption in the overtone band 5-0 of (CO)-C-12-O-16 X (1)Sigma(+) near 0.96 mu m with cavity ringdown spectroscopy; the light source was a Raman-shifted dye laser pumped with a frequency doubled Nd:YAG laser. This band shows lines in branch P to be much more intense than corresponding lines in branch R, in contrast to all lower overtone bands v-0 (v = 1-4). This reversal in relative intensity is explained quantitatively in terms of a radial function for the electric dipolar moment of CO. We have estimated absorption line strengths for P-3-P-18 in band 5-0 of (CO)-C-12-O-16; these strengths are consistent with a pure vibrational matrix element (5 vertical bar p(x)vertical bar 0) = (3.6 +/- 0.3) x 10(-36) C m of the electric dipolar moment p(x), a Herman-Wallis coefficient C-0(5) of about -0.1, and a band strength of (5.1 +/- 1.3) x 10(-29) m at 293 K. |
URI: | http://dx.doi.org/10.1021/jp052035x http://hdl.handle.net/11536/13273 |
ISSN: | 1089-5639 |
DOI: | 10.1021/jp052035x |
期刊: | JOURNAL OF PHYSICAL CHEMISTRY A |
Volume: | 109 |
Issue: | 35 |
起始頁: | 7854 |
結束頁: | 7858 |
Appears in Collections: | Articles |
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