Fig. 1: Emission spectra for different imposed pressures.
From: Pressure and temperature induced red-shift of the sodium D-line during HMX deflagration
Typical unconfined burning spectrum (green dotted line), 0.6 GPa fallhammer (red solid line) and 1.0 GPa Hopkinson bar (blue dashed line) deflagration. Calcium hydroxide peaks at 555 and 620 nm are also visible in the burning spectrum, alongside the main 589 nm sodium peak.
