1：Experimental Design and Method Selection:

The experiment involves exposing benzil crystals to shock waves generated by a pressure-driven shock tube with Mach number 1.7 to study changes in optical properties. Theoretical models for optical constants are applied based on standard formulations.

2：7 to study changes in optical properties. Theoretical models for optical constants are applied based on standard formulations. Sample Selection and Data Sources:

2. Sample Selection and Data Sources: Benzil crystals grown along the [100] plane using the Sankaranarayana-Ramasamy method, with dimensions 10×10×1.5 mm3, are used as test materials. Data is collected from UV-Visible spectrometry measurements.

3：5 mm3, are used as test materials. Data is collected from UV-Visible spectrometry measurements. List of Experimental Equipment and Materials:

3. List of Experimental Equipment and Materials: Pressure-driven shock tube for generating shock waves, Varian Cary 5E spectrometer for optical absorption and transmission measurements, and benzil crystal samples.

4：Experimental Procedures and Operational Workflow:

Shock waves are applied in pulses (1, 3, 5, 7, 9, 11 times) to the crystal. Optical absorption and transmission spectra are recorded before and after shock exposure over 200-800 nm wavelength range, with system calibration using air as reference.

5：Data Analysis Methods:

Optical constants (e.g., absorption coefficient, band gap energy, dielectric constant) are calculated using standard theoretical formulations. Data is analyzed to compare pre- and post-shock conditions.