Spectrum Mid-IR absorbance spectrum of tholins (95%N2:5%CH4) before X-Ray irradiation Spectrum Mid-IR absorbance spectrum of tholins (95%N2:5%CH4) after 10 min X-Ray irradiation Spectrum Mid-IR absorbance spectrum of tholins (95%N2:5%CH4) after 30 min X-Ray irradiation Spectrum Mid-IR absorbance spectrum of tholins (95%N2:5%CH4) after 60 min X-Ray irradiation Spectrum Mid-IR absorbance spectrum of tholins (95%N2:5%CH4) after 240 min X-Ray irradiation Spectrum Mid-IR absorbance spectrum of tholins (95%N2:5%CH4) after 600 min X-Ray irradiation