For a little while we thought that there was
an extension to Earnshaw’s
theorem. But there
isn’t: it is quite feasible to have fully confining rf traps with
nonzero field at the center.
For a little while we thought that there was
an extension to Earnshaw’s
theorem. But there
isn’t: it is quite feasible to have fully confining rf traps with
nonzero field at the center.