We report data on pulsed atomic helium beams for use in an experiment on at
omic reemission of atoms incident on a superfluid helium four sample. We us
ed a gas dynamics code to model these pulsed low energy helium beams and fo
und a good jit with the experimental results at low source pourer. The fit
implies that significant collisional effects occur in these beams. Using th
e modeller the incident pulsed beam which we obtained, we produced simulate
d signals from the reemitted atoms which we expect to see in the experiment
in which we monitor reemission from the sample when these atomic pulses ar
e fired at it. We find that the present experiment could detect the propose
d condensate mediated transmission process but that a larger superfluid sam
ple would give a more definitive result.