Static phase diagram of tin above 1 Mbar

We plan to use laser-heated diamond anvil cell to measure the phase diagram of tin in the 1-2 Mbar range, with a focus on relative stability of hcp vs bcc phase. In fact, static/dynamic compression under close P-T conditions (~180 GPa) seem to produce different hcp/bcc phases. We aim at determining if compression rate, or non-hydrostatic stress, have an effect on the phase adopted by this metal under stress.