Geoscience Reference
In-Depth Information
Plasma off
P
ax
Plasma on
P
ax
P
w
8
P
w
6
4
2
0
−
2
−
4
−
6
−
8
0
20
40
60
80
z. cm
Fig. 6.13
Static pressure distribution along vortex of longitudinal plasmoid. Tangential velocity
V
t
D
40 Torr. Discharge position in the quartz tube is marked by
the
window
.
P
ax
and
P
w
are pressures measured near the axis and wall of the tube
140 m/s,
P
HF
D
1,700 W,
P
st
D
Fig. 6.14
Scheme of experimental setup with the vortex chamber
1
used in power balance
experiment:
2
nozzle,
3
quartz tube,
4
high-frequency ball electrode,
5
Tesla transformer,
6
micro-
wave interferometer,
7
video camera,
8
optical pyrometer,
9
pressure sensor,
10
thermocouple,
11
propane injector
