Temporal evolution of pump beam self-focusing at the High-Frequency Active Auroral Research Program [PDF]
, 2007 On 4 February 2005 the High-Frequency Active Auroral Research Program (HAARP) facility was operated at 2.85 MHz to produce artificial optical emissions in the ionosphere while passing through the second electron gyroharmonic.
Gerken-Kendall, E. +7 more
core +4 more sources
Persistent enhancement of the HF pump-induced plasma line measured with a UHF diagnostic radar at HAARP [PDF]
, 2006 Plasma lines excited by a powerful, high-frequency (HF) radio wave are studied using data obtained with an ultrahigh frequency (UHF) radar at HAARP (High Frequency Active Auroral Research Program) from 3 to 5 February 2005.
Bernhardt, P. A. +5 more
core +4 more sources
Radio-induced incoherent scatter ion line enhancements with wide altitude extents in the high-latitude ionosphere [PDF]
, 2013 [1] Apparent large electron density enhancements deduced from incoherent scatter radar observations during recent high power radio wave injection experiments at the European Incoherent Scatter Scientific Association (EISCAT) facility near Tromsø, Norway ...
Rietveld, M. T. +3 more
core +4 more sources
Resonance Cones in the Field Pattern of a Short Radio Frequency Probe in a Warm Anisotropic Plasma [PDF]
, 1970 An experimental investigation of the angular field pattern of a small radio frequency probe in a plasma in a magnetic field is described. The field is observed to become very large along a resonance cone whose axis is parallel to the static magnetic ...
Fisher, R. K., Fisher, Raymond Kurt
core +1 more source
ICRF plasma production at hydrogen minority regime in LHD
Nuclear Fusion, 2023 This study aim is to develop further an ion cyclotron range of frequencies (ICRF) method of plasma production in stellarators based on the minority heating.
Yu.V. Kovtun +16 more
doaj +1 more source
Analysis of Radio Frequency Blackout for a Blunt-Body Capsule in Atmospheric Reentry Missions
Aerospace, 2016 A numerical analysis of electromagnetic waves around the atmospheric reentry demonstrator (ARD) of the European Space Agency (ESA) in an atmospheric reentry mission was conducted.
Yusuke Takahashi +2 more
doaj +1 more source
Influence of a Helium–Nitrogen RF Plasma Jet on Onion Seed Germination
Applied Sciences, 2020 This paper presents an experiment using a radio frequency atmospheric pressure plasma jet to generate cold plasma for pre-sowing stimulation of Wolska onion seeds. Impact of the He + N2 afterglow plasma on germination was investigated.
Agnieszka Starek-Wójcicka +5 more
doaj +1 more source
Multi-frequency HF radar measurements of artificial F-region field-aligned irregularities [PDF]
, 2004 International audienceWe present radar backscatter power measurements using the CUTLASS HF radar at Hankasalmi, Finland from F-region field-aligned irregularities induced by HF radio pumping with the EISCAT Heating facility.
A. Senior +15 more
core +2 more sources
Transmission coefficient estimation based on antenna voltage standing wave ratio under plasma sheath
AIP Advances, 2018 Radio blackout has confused the aerospace industry for decades. The highly attenuated caused by the plasma sheath is the main cause of radio blackout. The transmission coefficient depends on the relationship between plasma density, collision frequency ...
Min Yang +4 more
doaj +1 more source
Coordinated optical and radar observations of ionospheric pumping for a frequency pass through the second electron gyroharmonic at HAARP [PDF]
, 2007 On 4 February 2005, the High-frequency Active Auroral Research Program (HAARP) facility was operated in O and X mode while pointing into the magnetic zenith to produce artificial optical emissions in the ionospheric F layer. The pump frequency was set to
Senior, Andrew +7 more
core +4 more sources