Radiation bomb

The radiation bomb was a deadly weapon developed by the Chiss Ascendancy and was created during the years that led up to the Battle of Naboo.

When the weapon was detonated, it released an intense wave of radiation that was capable of passing through walls as well as bulkheads making it a weapon that unshielded targets were incapable of protecting themselves against. The wave would destroy all living tissue that it encountered regardless of whether it was friend or foe. The Chiss made use of these weapons when they required to destroy enemy troops without damaging equipment, vehicles, structures or starships. This essentially allowed the Chiss to recover the target at a later date.

Force Commander Thrawn made use of six of these radiation bombs against one of the Dreadnaughts that formed part of the Outbound Flight. This was because of the retailiation of the Jedi Knights that formed part of the crew. The bombs would kill a majority of the ships crew with the ship itself remaining intact even during the years of the New Republic.

Source

 * Outbound Flight