An experimental study has been made 'of the energy transfer from a
hot (T-5 x 10 K), dense (n -.10 cm ) 6 0 16 -3 deuterium plasma
containing a strong magnetic field 4 (8-10 Gauss) brought into
sudden contact with a cold wall. The energy flux from the plasma to
the wall was measured using a thin film, fast rise-time bolometer.
The construction, calibration, and theory of this bolometer are
described. The experimentally measured energy flux was compared
with a theoretical prediction employing classical plasma transverse
thermal conductivity. The measured energy flux is found to be about
1.5 times that predicted by classical plasma theory. The measured
plasma ftransverse thermal conductivity exhibits the functional
dependence on temperature, magnetic field, and density that is
expected from classical plasma theory. The extent of damage to the
cold wall surface was also measured using a scanning electron
microscope to examine various wall samples exposed to the plasma.
The observed surface damage to a copper wall sample was in
reasonable agreement with the predicted damage due to sputtering.
The damage to the surface of a stainless steel wall sample was
considerably greater than predicted by sputtering.
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