Wang WF, Sirota JM, Reuter DC
Joint Center for Earth Systems Technology, University of Maryland Baltimore County, 1000 Hilltop Circle, Baltimore, Maryland, 21250
J Mol Spectrosc. 1999 Apr;194(2):256-268. doi: 10.1006/jmsp.1999.7809.
We report laboratory intensity measurements for the weak nu9 (998.8 cm-1) and intense nu10 (841.1 cm-1) bands of allene. Allene is predicted to be a constituent of Titan's atmosphere, and measurements of its abundance would yield important information about the atmospheric chemistry of that body. Spectra were obtained at a temperature of 200 K (approximating Titan conditions) using the high-resolution FTS instrument at Kitt-Peak National Observatory's McMath-Pierce observatory. A total of 505 nu9 and 687 nu10 line intensities were fit using a least-squares method to accurately determine two sets of transition dipole moments. Integrated band intensities computed utilizing the fitted parameters were found to be 36 +/- 4% cm-2 atm-1 and 301 +/- 4% cm-2 atm-1 for nu9 and nu10, respectively, at 200 K. Copyright 1999 Academic Press.
我们报告了丙二烯弱ν9（998.8厘米-1）和强ν10（841.1厘米-1）谱带的实验室强度测量结果。丙二烯预计是土卫六大气的一个成分，对其丰度的测量将产生有关该天体大气化学的重要信息。使用基特峰国家天文台麦克马思-皮尔斯天文台的高分辨率傅里叶变换光谱仪（FTS），在200K（接近土卫六的条件）温度下获得了光谱。采用最小二乘法对总共505个ν9和687个ν10谱线强度进行拟合，以准确确定两组跃迁偶极矩。利用拟合参数计算出的积分谱带强度在200K时，ν9为36±4%厘米-2 大气压-1，ν10为301±4%厘米-2 大气压-1。版权所有1999年学术出版社。
