Table 1.

Time difference of waves crest and velocity of explosion waves at different environmental pressures.

Initial pressure/atm	$\mathrm{\Delta }t$/μs	u/(m s−1)
1.8	217	700.0
1.6	211	719.9
1.4	204	744.6
1.2	185	821.0
1.0	182	834.6
0.8	156	973.7
0.6	129	1177.4
0.4	105	1446.6
0.2	55	2761.6