CONTRIBUTIONS TO THE 7TH TOPICAL CONFERENCE ON APPLICATIONS OF RADIO FREQUENCY POWER TO PLASMAS
The results of the first research project presented here show that the density limit for the wave-electron interaction has been investigated in the range =n sim 4--20times10"13" cm"-3". Enhancement of the 4th harmonic of the EC emission have been observed up to =n = 1.5times10"14" cm"-3" despite the worse accessibility due to the necessity of functioning with three waveguide columns out of four. This enhancement is strong at low density (=n sim 5times10"13" cm"-3") and becomes weaker as the density is increased. The second paper leads to the conclusion that despite the technical problems, good performances of the system have been obtained up to a power density at grill mouth of 9 kW/cm2. There are indications that this value is not a limit to current operations but that higher power density requires a better grill conditioning. Good coupling has been obtained in all the investigated plasma conditions for boundary density in agreement with theoretical expectations.
Bibliographic Reference: REPORT RT-FUS14-87, AVAILABILITY: ENEA, ROMA 1987
Record Number: 1989126087500 / Last updated on: 1989-05-01
Available languages: en