Electron acceleration and ionization fronts induced by high frequency plasma turbulence

Research output: Contribution to conferencePaper

Abstract

There are recent observations of artificial plasmas created during ionospheric modification experiments, in which intense radio waves are injected into the overhead ionosphere by ground-based transmitters. The plasma is formed just below the reflection point of the ordinary wave mode, where Langmuir and
upper hybrid turbulence take place. When the plasma builds up, the radio wave is reflected at a lower altitude, and an ionization front is formed, rapidly descending to an altitude a few tens of kilometres below the initial critical layer. The ionization of the neutral gas is attributed to collisions with energetic electrons accelerated by the plasma wave turbulence. Numerical full-scale modeling of the Langmuir turbulence, electron acceleration and transport, and ionization processes are consistent with the observations. By a similarity principle, the experiment can be scaled down from the large-scale ionosphere to a metre-scale laboratory plasma, where microwaves are used instead of radio waves to induce the plasma turbulence. Such laboratory experiments under controlled conditions are now planned at Strathclyde, and may lead to new methods for electron acceleration and plasma generation in the laboratory.

Conference

Conference41st IOP Plasma Physics Conference
CountryUnited Kingdom
CityLondon
Period14/04/1417/04/14

Fingerprint

plasma turbulence
electron acceleration
radio waves
ionization
ionospheres
turbulence
Langmuir turbulence
plasma generators
low altitude
neutral gases
plasma waves
transmitters
ionospherics
microwaves
collisions
electrons

Keywords

  • plasma physics
  • electron acceleration
  • Langmuir turbulence
  • ionosphere

Cite this

Eliasson, B. (2014). Electron acceleration and ionization fronts induced by high frequency plasma turbulence. Paper presented at 41st IOP Plasma Physics Conference, London, United Kingdom.
Eliasson, Bengt. / Electron acceleration and ionization fronts induced by high frequency plasma turbulence. Paper presented at 41st IOP Plasma Physics Conference, London, United Kingdom.
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title = "Electron acceleration and ionization fronts induced by high frequency plasma turbulence",
abstract = "There are recent observations of artificial plasmas created during ionospheric modification experiments, in which intense radio waves are injected into the overhead ionosphere by ground-based transmitters. The plasma is formed just below the reflection point of the ordinary wave mode, where Langmuir andupper hybrid turbulence take place. When the plasma builds up, the radio wave is reflected at a lower altitude, and an ionization front is formed, rapidly descending to an altitude a few tens of kilometres below the initial critical layer. The ionization of the neutral gas is attributed to collisions with energetic electrons accelerated by the plasma wave turbulence. Numerical full-scale modeling of the Langmuir turbulence, electron acceleration and transport, and ionization processes are consistent with the observations. By a similarity principle, the experiment can be scaled down from the large-scale ionosphere to a metre-scale laboratory plasma, where microwaves are used instead of radio waves to induce the plasma turbulence. Such laboratory experiments under controlled conditions are now planned at Strathclyde, and may lead to new methods for electron acceleration and plasma generation in the laboratory.",
keywords = "plasma physics, electron acceleration, Langmuir turbulence, ionosphere",
author = "Bengt Eliasson",
note = "Invited presentation at the 41st IOP Plasma Physics Conference, Grand Connaught Rooms, London, UK.; 41st IOP Plasma Physics Conference ; Conference date: 14-04-2014 Through 17-04-2014",
year = "2014",
month = "4",
day = "16",
language = "English",

}

Eliasson, B 2014, 'Electron acceleration and ionization fronts induced by high frequency plasma turbulence' Paper presented at 41st IOP Plasma Physics Conference, London, United Kingdom, 14/04/14 - 17/04/14, .

Electron acceleration and ionization fronts induced by high frequency plasma turbulence. / Eliasson, Bengt.

2014. Paper presented at 41st IOP Plasma Physics Conference, London, United Kingdom.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Electron acceleration and ionization fronts induced by high frequency plasma turbulence

AU - Eliasson, Bengt

N1 - Invited presentation at the 41st IOP Plasma Physics Conference, Grand Connaught Rooms, London, UK.

PY - 2014/4/16

Y1 - 2014/4/16

N2 - There are recent observations of artificial plasmas created during ionospheric modification experiments, in which intense radio waves are injected into the overhead ionosphere by ground-based transmitters. The plasma is formed just below the reflection point of the ordinary wave mode, where Langmuir andupper hybrid turbulence take place. When the plasma builds up, the radio wave is reflected at a lower altitude, and an ionization front is formed, rapidly descending to an altitude a few tens of kilometres below the initial critical layer. The ionization of the neutral gas is attributed to collisions with energetic electrons accelerated by the plasma wave turbulence. Numerical full-scale modeling of the Langmuir turbulence, electron acceleration and transport, and ionization processes are consistent with the observations. By a similarity principle, the experiment can be scaled down from the large-scale ionosphere to a metre-scale laboratory plasma, where microwaves are used instead of radio waves to induce the plasma turbulence. Such laboratory experiments under controlled conditions are now planned at Strathclyde, and may lead to new methods for electron acceleration and plasma generation in the laboratory.

AB - There are recent observations of artificial plasmas created during ionospheric modification experiments, in which intense radio waves are injected into the overhead ionosphere by ground-based transmitters. The plasma is formed just below the reflection point of the ordinary wave mode, where Langmuir andupper hybrid turbulence take place. When the plasma builds up, the radio wave is reflected at a lower altitude, and an ionization front is formed, rapidly descending to an altitude a few tens of kilometres below the initial critical layer. The ionization of the neutral gas is attributed to collisions with energetic electrons accelerated by the plasma wave turbulence. Numerical full-scale modeling of the Langmuir turbulence, electron acceleration and transport, and ionization processes are consistent with the observations. By a similarity principle, the experiment can be scaled down from the large-scale ionosphere to a metre-scale laboratory plasma, where microwaves are used instead of radio waves to induce the plasma turbulence. Such laboratory experiments under controlled conditions are now planned at Strathclyde, and may lead to new methods for electron acceleration and plasma generation in the laboratory.

KW - plasma physics

KW - electron acceleration

KW - Langmuir turbulence

KW - ionosphere

UR - http://plasma14.iopconfs.org/259753

UR - http://dx.doi.org/10.1017/S0022377814000968

M3 - Paper

ER -

Eliasson B. Electron acceleration and ionization fronts induced by high frequency plasma turbulence. 2014. Paper presented at 41st IOP Plasma Physics Conference, London, United Kingdom.