Fig. 1. Absorbance curves of hydrogen 3 333.33~10 000 cm^-1

Fig. 2. Absorbance curves of methane 3 333.33~10 000 cm^-1

Fig. 3. Absorbance curves of hydrogen 4 000~5 000 cm^-1

Fig. 4. Comparison of background gas and hydrogen absorption spectra

Fig. 5. Overlap of H₂ absorption spectra with CO₂ and H₂O in the range 4 712~4 714 cm^-1

Fig. 6. Absorbance curves of hydrogen spectra as a function of temperature

Fig. 7. Effect of temperature variation on the peak and half peak full widths of hydrogen absorbance curves

Fig. 8. Effect of temperature change on the integral absorbance

Fig. 9. Effect of temperature change on the line strength

Fig. 10. Overall partition function change rule with temperature

Fig. 11. The overall distribution function ratios, Boltzmann distribution, and the degree of stimulated radiation influence varing with temperature