Detecting anti-H atoms
The fraction of the antihydrogen atoms detected in
the detection well decreases as the frequency of the
oscillating electric field is increased (solid points). More atoms
are detected when there is no oscillating field (open square).
This point is plotted on the same scale as the others but it has
no frequency associated with it.
An antihydrogen kinetic energy of 200 meV is a good fit to Gabrielse and colleagues' measurements and is much higher than the 0.3 meV average energy for a 4.2 K thermal distribution -- the lowest possible average antiproton and antihydrogen energy. The 1 meV curve is far from consistent with the data
The solid curves apply when the oscillating electric field is applied, and the dashed curve when it is not (image credit: G Gabrielse et al. 2004 Phys. Rev. Lett. 93 073401).