In this paper, the Hartmann-Tran profile (HTP) and its asymptotic limits are employed to analyze the experimentally-measured absorption spectra of CO₂ gas. The fitted results by multi-spectrum fitting are compared to those from the ordinary line-shape models. The equivalence and computational efficiency of the asymptotic limits of HTP to their ordinary counterparts are studied. The research shows that the parameters of line position ${\omega }_0$, intensity $S$, pressure broadening coefficient ${\mathrm{\Gamma }}_0/p$ and shifting coefficient ${\mathrm{\Delta }}_0/p$ by HTP agree well with those from the speed-dependent hard-collision line-shapes. In comparison, the poorly-determined partial-correlation parameter $\eta$ makes the fitted line-narrowing parameters less reliable.

本文采用Hartmann-Tran谱（HTP）及其渐近极限来分析实验测量的CO ₂气体吸收光谱。将多光谱拟合的拟合结果与普通线形模型的拟合结果进行比较。研究了HTP渐近极限与其普通对应极限的等价性和计算效率。研究表明线位置参数${\omega }_0$， 强度 $\mathrm{小号}$，压力展宽系数 ${\mathrm{\Gamma }}_0/p$ 和移动系数 ${\mathrm{\Delta }}_0/p$HTP的“线性”与速度依赖的硬碰撞线形的速度非常吻合。相比之下，偏相关参数不确定$\eta$ 使得拟合的线变窄参数不太可靠。