Abstract
Abstract
In a post-thermal-quench plasma, mitigated or unmitigated, the plasma power balance is mostly between collisional or Ohmic heating and plasma radiative cooling. In a plasma of atomic mixture
{
n
α
}
with α labeling the atomic species, the power balance sets the plasma temperature, ion charge state distribution
{
n
α
i
}
with i the charge number, and through the electron temperature
T
e
and ion charge state distribution
{
n
α
i
}
,
the parallel electric field
E
∥
.
Since the threshold electric field for runaway avalanche growth
E
a
v
is also set by the atomic mixture, ion charge state distribution and its derived quantity, the electron density
n
e
,
the plasma power balance between Ohmic heating and radiative cooling imposes a stringent constraint on the plasma regime for avoiding and minimizing runaways when a fusion-grade tokamak plasma is rapidly terminated.
Funder
National Energy Research Scientific Computing Center
Fusion Energy Sciences
Subject
Condensed Matter Physics,Nuclear and High Energy Physics
Cited by
1 articles.
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