Determination of Temperatures Using CH Radical Emission Spectroscopy

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2012,（10）
• 页码范围: 134-137
• 页数: 4页
• 语种: 英文
• DOI: 10.1088/0256-307X/29/10/104707

摘要

An improved Boltzmann plot method where the intensity is taken as the integral of the experimental spectrum within a special band for a cluster of a rotational line of R and Q branches is proposed.This method aims at deducing rotational and vibrational temperatures using CH radical A2 △→X2 H band emission spectroscopy accurately.In addition,the data relative to the rotation lines of CH (A2 △→X2Ⅱ) for both temperatures are assembled.The emission spectrum of CH (A2 △→X2 Ⅱ) at the inner cone of an acetylene-oxygen flame in a rich oxygen state is recorded and both of the temperatures are determined by the above-mentioned method.The values are recorded as 3141 K and 3097K,for the rotational and vibrational temperatures,respectively.This result reveals that the equilibrium between the rotation and vibration states is achieved.A simple discussion fol this method is also provided.