Improving the magnetic bottle that controls fusion power on Earth
(PHYSorg.com Physics)

Scientists who use magnetic fields to bottle up and control on Earth the fusion reactions that power the sun and stars must correct any errors in the shape of the fields that contain the reactions. Such errors produce deviations from the symmetrical form of the fields in doughnut-like tokamak fusion facilities that can have a damaging impact on the stability and confinement of the hot, charged plasma gas that fuels the reactions.