On the Pressure and Temperature Dependence of the Absorption Coefficient of NH₃

Figure 9

Variation of ln[𝛼(𝑇)/𝛼(235)] as a function of ln(𝑇/235) for the left wing of ^𝑃𝑃(5,2)_𝑎 line. The slope of the line obtained from a linear regression represents the temperature exponent 𝐴=−0.619±0.016.