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

Table 2

Self-absorption coefficient of the two wings of ^𝑃𝑃(5,2)_𝑠 and ^𝑃𝑃(7,4)_𝑠 lines as a function of the square of NH₃ pressure (𝑃²_NH3) at 𝑇=296 K.

𝑃^2NH3×10^4 (atm^2)	𝛼×10^4 (cm^−1)
	^𝑃𝑃(5,2)𝑠left	^𝑃𝑃(5,2)𝑠right	^𝑃𝑃(7,4)𝑎left	^𝑃𝑃(7,4)𝑎right
2.28	14.9	14.4	—	1.64
18	61	—	48.5	—
37	123.8	125.9	80.5	81.5
63	191.5	191.5	122.1	121.5
140	384.4	382.3	256.5	256.3