5.4 Assignments 177appropriate subset of these parameters. Suppose a cylindrical mercury plasma with
Te=1− 2 eV,Ti=0. 1 eV, diameter 2.5 cm, carries a current ofI=0. 35 amps.
At what density would an ion acoustic instability be expected to develop. Does this
configuration remind you of an everyday object? Hint: there are several hanging from
the ceiling of virtually every classroom.