Fig. 1. Influences of different parameters on temperature retrieval at temperature of 298 K and pressure range of 20265.0-810600.0 Pa. (a) FWHM; (b) θ; (c) ηb; (d) p

Fig. 2. Results of temperature retrieval under different relative intensities of Mie scattering at temperature of 298 K. (a) Different relative intensities of Mie scattering at pressure range of 20265.0-810600.0 Pa; (b) temperature retrieval errors corresponding to different relative intensities of Mie scattering in Fig. 2(a)

Fig. 3. Comparison of spontaneous Rayleigh-Brillouin scattering spectra of nitrogen with theoretical spectra obtained by Tenti S6 model at temperature of 298 K and different pressures. (a) 70927.5 Pa; (b) 91192.5 Pa; (c) 455962.5 Pa; (d) 506625.0 Pa; (e) 607950.0 Pa; (f) 709275.0 Pa

Fig. 4. Temperature errors ΔT caused by parameter errors at temperature of 298 K and different pressures based on measured spontaneous Rayleigh-Brillouin scattering spectra. (a) Influence of FWHM on temperature retrieval; (b) influence of ηb on temperature retrieval; (c) influence of p on temperature retrieval

Fig. 5. Comparison of spontaneous Rayleigh-Brillouin scattering spectra including Mie scattering in nitrogen with theoretical spectra obtained by Tenti S6 model at temperature of 298 K and different pressures. (a) Relative intensity of Mie scattering is 10.95; (b) relative intensity of Mie scattering is 6.58; (c) relative intensity of Mie scattering is 14.83; (d) relative intensity of Mie scattering is 2.00