Lucian Alliance naquadria bomb

A naquadria bomb is type of nuclear weapon which uses the unstable radioactive variant of naquadah known as naquadria in its core.

Overview
The naquadria bomb is said to have a yield of 50 to 70 megatons, enough to destroy a city the size of Washington D.C. Although the bomb apparently uses only naquadria it's yield is significantly weaker then the Tau'ri naquadria enhanced nuclear bomb Mark IX which has a yield of multible gigatons.

History
Naquadria bombs were first developed by the nation of Kelowna on the planet that would later come to be known as Langara. By 2010, the Lucian Alliance has acquired supplies of naquadria for use in their own bombs possibly from their Lucian Alliance outpost. The Allaince employed them in their war with Earth, planting them on two Tau'ri bases, possibly destroying them, and trying to use one on Earth. Camile Wray and Ronald Greer, in the bodies of Senator Michaels and Doctor Andrew Covel, tried to disarm one such device but were unable to do so, exposing themselves to fatal radiation levels in the process. Michaels was able to learn how to disarm the bomb from Varro and switched back to her body with Covel to do so herself.