High-Resolution Spectroscopy of Molecules to Support Upper Atmospheric Studies

威廉玛丽学院的Malathy Venkataraman受到实验物理化学项目和印度/南亚项目的支持，对导致温室效应和臭氧消耗的分子进行高分辨率红外光谱研究。这个项目是文卡塔拉曼博士和印度孟买巴巴原子研究中心（Bhabha Atomic Research Center， B.A.R.C.）的德库尼亚博士的合作成果。羰基氟化物和哈龙-1301的红外光谱将使用美国国家标准与技术研究所的高分辨率傅里叶变换光谱仪进行采集，并使用B.A. rc开发的计算机程序进行分析。哈龙-1301的低温二极管激光吸收光谱将在美国宇航局兰利研究中心进行采集，以便获得有关其分子参数的更完整信息。这些光谱数据对大气污染监测和高层大气光谱特征识别具有重要意义。氯氟烃，如氟利昂和哈龙，是造成臭氧消耗问题的主要原因。这些分子的大气浓度目前是通过产物分析来估计的。这项研究将提供可用于直接监测这些污染物在大气中的浓度的信息。

Malathy Venkataraman of The College of William and Mary is supported by the Experimental Physical Chemistry Program and the India/South Asia Program to perform high resolution infrared spectroscopic studies of molecules contributing to the greenhouse effect and ozone depletion. This project is a collaborative effort between Dr. Venkataraman and Dr. D'Cunha of the Bhabha Atomic Research Center (B.A.R.C.), Bombay, India. Infrared spectra of carbonyl fluoride and halon-1301 will be taken using the high-resolution Fourier transform spectrometer at the National Institute of Standards and Technology, and analyzed using computer programs developed at B.A. R. C. Low temperature diode laser absorption spectra of halon-1301 will be taken at the NASA Langley Research Center in order to obtain more complete information on its molecular parameters. This spectroscopic data will be valuable in pollution monitoring and identification of spectral signatures in upper atmospheric research. Chlorofluorocarbons, such as freons and halons, are known to be responsible for much of the ozone depletion problem. The atmospheric concentrations of these molecules are currently estimated from product analysis. This research will provide information which can be used to directly monitor the concentrations of these pollutants in the atmosphere.