H-Atom  Yield  from  the  Dissociative Recombination  of  H3+ Ions with
Thermal  Electrons
M. Skrzypkowski, M.F. Golde, and R. Johnsen
University of Pittsburgh
The flowing afterglow technique in conjunction with laser-induced
fluorescence (LIF) has been used to determine the H-atom yield of the
dissociative recombination of   H3+ + e  --> H + H+ H  ( and H2+ H) at 300
K.  It is found that  the yield  is  f(H)  =3D 2.2 =B1 0.3, quite close to
earlier results  of merged-beam and ion storage ring measurements.