Loss of MeV ions during3He minority ion cyclotron resonance heating in TFTR

The loss of D- 3 He alpha particles to the bottom of TFTR during 3 He minority ion cyclotron resonance heating (ICRH) is measured and shown to be consistent with first-orbit loss. However, an anomalous loss also occurs 45 degrees below the outer midplane, which may be due either to a small amount of minority tail ion loss or to ICRH induced deconfinement of fusion products