### Abstract

Language | English |
---|---|

Pages | 160-162 |

Number of pages | 3 |

Journal | Physica Scripta |

Volume | T98 |

DOIs | |

Publication status | Published - 2002 |

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### Keywords

- microinstabilities
- plasma interactions
- radiation mechanisms
- polarization

### Cite this

*Physica Scripta*,

*T98*, 160-162. https://doi.org/10.1238/Physica.Topical.098a00160

}

*Physica Scripta*, vol. T98, pp. 160-162. https://doi.org/10.1238/Physica.Topical.098a00160

**A new cyclotron maser radiation mechanism in space plasmas.** / Bingham, R; Cairns, R A.

Research output: Contribution to journal › Article

TY - JOUR

T1 - A new cyclotron maser radiation mechanism in space plasmas

AU - Bingham, R

AU - Cairns, R A

PY - 2002

Y1 - 2002

N2 - In this paper, we discuss a new cyclotron maser type instability driven by a crescent or horseshaped electron distribution function. Such distribution functions are easily created by an electron beam moving into a stronger magnetic field region, where conservation of the first adiabatic invariant causes an increase in their pitch angle. This produces a broad region on the distribution function where ∂fe/∂v⊥ > 0. Planetary dipole magnetic fields are examples of where these types of distributions can be found. We examine the stability of these electron horseshoe distribution functions for right-hand extraordinary mode (R–X mode) radiation close to the electron cyclotron frequency propagating perpendicular to the magnetic field using both non-relativistic and relativistic beams.

AB - In this paper, we discuss a new cyclotron maser type instability driven by a crescent or horseshaped electron distribution function. Such distribution functions are easily created by an electron beam moving into a stronger magnetic field region, where conservation of the first adiabatic invariant causes an increase in their pitch angle. This produces a broad region on the distribution function where ∂fe/∂v⊥ > 0. Planetary dipole magnetic fields are examples of where these types of distributions can be found. We examine the stability of these electron horseshoe distribution functions for right-hand extraordinary mode (R–X mode) radiation close to the electron cyclotron frequency propagating perpendicular to the magnetic field using both non-relativistic and relativistic beams.

KW - microinstabilities

KW - plasma interactions

KW - radiation mechanisms

KW - polarization

UR - http://iopscience.iop.org/1402-4896/

U2 - 10.1238/Physica.Topical.098a00160

DO - 10.1238/Physica.Topical.098a00160

M3 - Article

VL - T98

SP - 160

EP - 162

JO - Physica Scripta

T2 - Physica Scripta

JF - Physica Scripta

SN - 0031-8949

ER -