title: Excitation of quasielectrostatic waves in a laboratory magnetoplasma with weak spatial dispersion.
abstract: Short-wavelength quasielectrostatic waves radiated by a small probe in a cold (T(e) approximately 0.5 eV) laboratory magnetoplasma are studied in both the upper-hybrid (UH) and the lower-hybrid (LH) frequency ranges. Measured radiation patterns are characterized by resonance cones in the LH range and in the low-frequency part of the UH range (at omega < 2omega(c)), while in its high-frequency part (at omega > 2omega(c)), a beamed radiation along the external magnetic field is observed. An analysis reveals that the angular resonance is primarily limited by the phase effects caused by weak spatial dispersion.
authors.affiliation: Institute of Applied Physics, Russian Academy of Science, 46 Ulyanov Street, 603950 Nizhny Novgorod, Russia. mstar@appl.sci-nnov.ru
authors.forename: Mikhail V
authors.initials: MV
authors.lastname: Starodubtsev
authors.forename: Alexander V
authors.initials: AV
authors.lastname: Kostrov
authors.forename: Vladimir V
authors.initials: VV
authors.lastname: Nazarov
authors.forename: German V
authors.initials: GV
authors.lastname: Permitin