To give a feel for the forces involved, I have read [2] that the pressure generated by ablation that compresses the W88 fusion secondary is around 6 petaPascals

To give a feel for the forces involved, I have read [2] that the pressure generated by ablation that compresses the W88 fusion secondary is around 6 petaPascals. For comparison, the estimated pressure at the Earth's center [1] is around 360 gigaPascals, about 1/16,000 that of the W88 secondary compression. [1] https://en.wikipedia.org/wiki/Inner_core https://en.wikipedia.org/wiki/Inner_core [2] https://en.wikipedia.org/wiki/Thermonuclear_weapon#Comparing_implosion_mechanisms https://en.wikipedia.org/wiki/Thermonuclear_weapon#Comparing... edited to add W88 implosion pressure link