CO 2-broadened water in the pure rotation and m2 fundamental regions
CO 2-broadened water in the pure rotation and m2 fundamental regions
复制标题
CO 2-纯旋转和 m2 基本区域中的水拓宽
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
R. Gamache
中科院分区：
文献类型：
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作者：
L. Brown;Caitlin M. Humphrey;R. Gamache
CO2 展宽水系数（半宽度、线位移和宽度的温度依赖性）是使用完全复杂的 Robert-Bonamy 公式预测的，用于 200 至 900 cm 之间的 (000)-(000) 937 种允许和禁止的垂直类型跃迁！ 1 以便于火星和金星的大气遥感。此外，在室温下获得了 (010)-(000) 基波的 257 个垂直跃迁的经验洛伦兹线宽和 CO2 展宽的 H2 16 O 的压力引起的频移。为此，在 0.0054 cm 处记录了校准光谱！ 1 分辨率是在假设 Voigt 线形状的情况下测量的。用于 1287 和 1988 厘米之间的过渡！ 1 旋转量子高达 J = 13 且 Ka = 6，宽度从 0.045 到 0.212 cm 不等！ 1个大气压！ 1 在 300 K；压力变化相当大，范围从 ! 0.0386 至 +0.0436 厘米！ 1个大气压！ 1.对于 (010)-(000) 谱带，CO2 展宽的 H2O 半宽度的 RMS 和平均观测值和计算值差异分别为 12% 和 1.9%，而观测值和计算值的压力引起的位移系数的 RMS 和平均比率分别为 1.6 和 0.79。对于涉及 Ka = 0 和 1 的跃迁对，例如 202 313 和 313 ← 202，计算出的和观察到的压力引起的位置变化的符号相反，而且大小通常相似，但是，数据太有限，无法表征宽度的振动依赖性。2007 年由 Elsevier Inc. 出版。
The CO2-broadened water coe!cients (half-widths, line shifts, and temperature dependence of the widths) are predicted using a fully complex Robert‐Bonamy formulation for the 937 allowed and forbidden perpendicular type transitions of (000)‐(000) between 200 and 900 cm ! 1 in order to facilitate atmospheric remote sensing of Mars and Venus. In addition, empirical Lorentz line widths and pressureinduced frequency-shifts of CO2-broadened H2 16 O are obtained at room temperature for 257 perpendicular transitions of the (010)‐(000) fundamental. For this, calibrated spectra recorded at 0.0054 cm ! 1 resolution are measured assuming Voigt line shapes. For transitions between 1287 and 1988 cm ! 1 with rotational quanta up to J = 13 and Ka = 6, the widths vary from 0.045 to 0.212 cm ! 1 atm ! 1 at 300 K; the pressure-shifts are quite large and range from ! 0.0386 to +0.0436 cm ! 1 atm ! 1 . For the (010)‐(000) band, the RMS and mean observed and calculated di"erences for CO2-broadened H2O half-widths are 12% and ! 1.9%, respectively, while the RMS and mean ratios of the observed and calculated pressure-induced shift coe!cients are 1.6 and 0.79, respectively. For pairs of transitions involving Ka = 0 and 1, such as 202 ‹ 313 and 313 ‹ 202, both the calculated and observed pressure induced shifts in positions are opposite in sign and often similar in magnitude. The data are too limited to characterize vibrational dependencies of the widths, however. ! 2007 Published by Elsevier Inc.