Table 1. Pressure and temperature conditions, unit-cell volumes of KCl B2 at room temperature and at high temperature just before temperature quenching for rapid laser heating and cooling experiments of Fe₂SiO₄ .

Run number	Initial pressure (GPa)	Initial lattice volume of KCl (Å3)	In situ temperature (K)†	Frame rate of temperature measurements	In situ pressure (GPa)‡	In situ lattice volume of KCl (Å3)
1	19.7	37.05	3260 (80)	54.6	28.6 (0.2)	37.88
2	31.5	33.61	No temperature measurement data	No temperature measurement data	No temperature measurement data	33.83
3	37.4	32.32	3410 (150)	67.4	41.9 (0.6)	33.96
4	37.8	32.24	3500 (80)	40.8	44.3 (0.2)	33.48
5	42.3	31.97	3680 (120)	25.8	51.2 (0.4)	32.18
6	39.2	31.42	3640 (120)	25.8	52.2 (0.4)	31.97

^†The temperature uncertainty is provided by the average temperature variation over a heating area of 26 µm.

^‡Pressure uncertainty is calculated based on temperature variations.