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plasma I-Material
particles I-Material
[ O
4,5 O
] O
. O
It O
is O
concluded O
that O
conventional O
concepts O
and O
materials O
for O
plasma B-Task
facing I-Task
components I-Task
( O
PFCs B-Task
) O
reach O
their O
limits O
in O
terms O
of O
material O
lifetime O
and O
power O
exhaust O
at O
approximately O
20MW O
/ O
m2 O
, O
which O
is O
presumably O
dramatically O
reduced O
to O
< O
10MW O
/ O
m2 O
due O
to O
neutron B-Material
damage O
in O
a O
D-T B-Material
reactor I-Material
[ O
6 O
] O
or O
even O
only O
half O
that O
value O
[ O
7 O
] O
. O