polywell

A polywell device is a type of fusion reactor that was originated by Robert Bussard under a U.S. Navy research contract. It traps electrons in a magnetic confinement inside its hollow center. The negatively charged electrons then accelerate positively charged ions for the purpose of achieving inertial electrostatic confinement fusion. The polywell device can trace its development to the ideas behind the Farnsworth-Hirsch Fusor. Bussard theorized that this device could potentially generate net energy production and thus become a source for electric power.