Accession Number : AD0437317


Title :   NOTES ON PLASMA OSCILLATIONS,


Corporate Author : QUEEN'S UNIV BELFAST (NORTHERN IRELAND)


Personal Author(s) : Emeleus,K G ; Jones,J M


Report Date : 10 Jun 1963


Pagination or Media Count : 13


Abstract : The full spectrum of oscillations generated in a low-pressure, low-voltage hot-cathode plasma maintained by an electron beam is outlined. It has been confirmed that a number of frequencies occur in the plasma-electron band but the simultaneity of the oscillations in a sufficiently short time scale is questioned. Problems also arise in connection with the reality and amplitude of harmonics and subharmonics. Study of ion-band oscillations showed the need for simplification of plasma geometry. A cylindircal tube constructed with this aim has proved to be a source of intermediate band (30 - 200 Mc/s) oscillations, which are being actively investigated. Some new experiments are also being done on two-beam instability, and on plasma-electron concentration contours. (Author)


Descriptors :   *OSCILLATION , FREQUENCY , ELECTRON BEAMS , EXCITATION , GAS IONIZATION , HIGH FREQUENCY , LOW FREQUENCY , ELECTROSTATIC FIELDS , ELECTROSTATIC FIELDS


Distribution Statement : APPROVED FOR PUBLIC RELEASE