Is this design possible? A true 4 stage thermonuclear doomsday explosive?

[Ruptga]

Only if the 4th stage is mostly made of naquadah.

 

[BoomerD]

Only if the 4th stage is mostly made of naquadah.

Meh...silly geek...Unobtainium is what you seek.

 

[bunnyfubbles]

why stop at 4 stages? go 7, because it is the most powerfully magical number after all

 

[Schadenfroh]

why stop at 4 stages? go 7, because it is the most powerfully magical number after all

Estimated yield...
13Gigatons
http://forums.anandtech.com/member.php?u=168004

 

[Jeff7]

Only if the 4th stage is mostly made of naquadah.

Or go for naquadria: The Wacky Naquadah.

 

[Joseph F]

Determine Earth's resonant frequency, then build a massive and powerful "shaker" device. Apply consistent force at the resonant frequency, and wait until the crust starts splitting apart.

You stole this idea from Tesla, didn't you?