INTERACTION OF RING CURRENT AND RADIATION BELT PROTONS WITH DUCTED PLASMASPHERIC HISS .1. DIFFUSION-COEFFICIENTS AND TIMESCALES

被引:55
作者
KOZYRA, JU [1 ]
RASMUSSEN, CE [1 ]
MILLER, RH [1 ]
LYONS, LR [1 ]
机构
[1] AEROSP CORP, SPACE SCI LAB, LOS ANGELES, CA 90009 USA
关键词
D O I
10.1029/93JA01532
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Protons that are convected into the inner magnetosphere in response to enhanced magnetic activity can resonate with ducted plasmaspheric hiss in the outer plasmasphere via an anomalous Doppler-shifted cyclotron resonance. Plasmaspheric hiss is a right-hand-polarized electromagnetic emission that is observed to fill the plasmasphere on a routine basis. When plasmaspheric hiss is confined within field-aligned ducts or guided along density gradients, wave normal angles remain largely below 45-degrees. This allows resonant interactions with ions at typical ring current and radiation belt energies to take place. Such field-aligned ducts have been observed both within the plasmasphere (Kozyra et al., 1987a; Koons, 1989) and in regions outside of the plasmasphere (Chan and Holzer, 1976). Wave intensities are estimated using statistical information from studies of detached plasma regions (Chan et al., 1974). Diffusion coefficients are presented for a range of L shells and proton energies for a fixed wave distribution. Harmonic resonances in the range n = +/- 100 are considered in order to include interactions between hiss at 100 Hz to 2 kHz frequencies, and protons in the energy range between approximately 10 keV and 1000 keV. Diffusion timescales are estimated to be of the order of tens of days and comparable to or shorter than lifetimes for Coulomb decay and charge exchange losses over most of the energy and spatial ranges of interest.
引用
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页码:4069 / 4084
页数:16
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共 57 条
  • [1] A STATISTICAL STUDY OF PC 1-2 MAGNETIC PULSATIONS IN THE EQUATORIAL MAGNETOSPHERE .1. EQUATORIAL OCCURRENCE DISTRIBUTIONS
    ANDERSON, BJ
    ERLANDSON, RE
    ZANETTI, LJ
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1992, 97 (A3) : 3075 - 3088
  • [2] WHISTLER DUCT PROPERTIES DEDUCED FROM VLF OBSERVATIONS MADE WITH OGO-3 SATELLITE NEAR MAGNETIC EQUATOR
    ANGERAMI, JJ
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH, 1970, 75 (31): : 6115 - &
  • [3] FUNDAMENTALS OF VERY LOW FREQUENCY EMISSION GENERATION MECHANISMS
    BRICE, N
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH, 1964, 69 (21): : 4515 - +
  • [4] A COMPARISON OF EQUATORIAL ELECTRON-DENSITIES MEASURED BY WHISTLERS AND BY A SATELLITE RADIO TECHNIQUE
    CARPENTER, DL
    ANDERSON, RR
    BELL, TF
    MILLER, TR
    [J]. GEOPHYSICAL RESEARCH LETTERS, 1981, 8 (10) : 1107 - 1110
  • [5] CARPENTER DL, 1993, IN PRESS J GEOPHYS R
  • [6] RELATION BETWEEN ELF HISS AMPLITUDE AND PLASMA-DENSITY IN OUTER PLASMASPHERE
    CHAN, KW
    HOLZER, RE
    SMITH, EJ
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH, 1974, 79 (13): : 1989 - 1993
  • [7] ELF HISS ASSOCIATED WITH PLASMA-DENSITY ENHANCEMENTS IN OUTER MAGNETOSPHERE
    CHAN, KW
    HOLZER, RE
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1976, 81 (13): : 2267 - 2274
  • [8] DETACHED PLASMA REGIONS IN MAGNETOSPHERE
    CHAPPELL, CR
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH, 1974, 79 (13): : 1861 - 1870
  • [9] ON THE ORIGIN OF PLASMASPHERIC HISS - RAY PATH INTEGRATED AMPLIFICATION
    CHURCH, SR
    THORNE, RM
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1983, 88 (NA10): : 7941 - 7957
  • [10] STABLE AURORAL RED ARCS SINKS FOR ENERGY OF DST MAIN PHASE
    COLE, KD
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH, 1965, 70 (07): : 1689 - +