Ion gyroradius-sized structures and artificial ion conics generated by the Arecibo ionospheric heater

1995 ◽  
Vol 22 (4) ◽  
pp. 357-360 ◽  
Author(s):  
M. J. Keskinen ◽  
H. L. Rowland ◽  
P. Bernhardt
Keyword(s):  
Ion Conics

EXOS-D observations of upflowing ion conics with high time resolution

1991 ◽  
Vol 18 (2) ◽  
pp. 341-344 ◽  
Author(s):  
W. Miyake ◽  
T. Mukai ◽  
N. Kaya ◽  
H. Fukunishi
Keyword(s):  
Time Resolution ◽  
High Time ◽  
High Time Resolution ◽  
Ion Conics

scholarly journals Interplanetary magnetic field control of dayside ion conics

2000 ◽  
Vol 105 (A10) ◽  
pp. 23339-23344 ◽  
Author(s):  
W. Miyake ◽  
T. Mukai ◽  
N. Kaya
Keyword(s):  
Magnetic Field ◽  
Interplanetary Magnetic Field ◽  
Field Control ◽  
Ion Conics

scholarly journals Relationship between low-frequency electric-field fluctuations and ion conics around the cusp/cleft region

2006 ◽  
Vol 24 (2) ◽  
pp. 667-677
Author(s):  
W. Miyake ◽  
A. Matsuoka ◽  
T. Mukai
Keyword(s):  
Electric Field ◽  
Low Frequency ◽  
Low Energy ◽  
Integration Time ◽  
Field Fluctuations ◽  
The Difference ◽  
Field Lines ◽  
Local Intensity ◽  
The Relationship ◽  
Ion Conics

Abstract. We investigated the relationship between low-frequency (0.2-4.0 Hz) electric-field fluctuations (LEFs) and ion conics around the dayside cusp/cleft region in the altitude range from 5000 to 10000km from observations made by the Akebono satellite. Ion conics were generally associated with intense LEFs. We found a significant correlation between the power spectral density of LEFs at any frequency and the energy of simultaneously observed ion conics. Ion conics with a conic angle near 90 deg and those more aligned with magnetic field lines both had an equivalent correlation with the local intensity of the LEFs. The LEFs associated with near-perpendicular ion conics were, however, generally more intense than those associated with folded conics. The difference was clearer for low-energy conics. These results are in agreement with a scenario of height-integrated heating of ions and energization of ions by electromagnetic energy supplied by local LEFs. Ions generally stay in the energization region during their upward motion along the field line, so that more folded ion conics with weak energization reach the same energy level as near-perpendicular conics with strong energization, due to the difference in integration time. The limit on residence time in the intense heating region causes the clearer difference for low-energy conics. We set up a simple model to examine the relationship between the energization rate and the evolution of ion conics along the field lines, and obtained good agreement with the observation results.

On the origins of the upward shift of elevated (bimodal) ion conics in velocity space

1996 ◽  
Vol 101 (A12) ◽  
pp. 26961-26969 ◽  
Author(s):  
W. Miyake ◽  
T. Mukai ◽  
N. Kaya
Keyword(s):  
Velocity Space ◽  
Upward Shift ◽  
Ion Conics

scholarly journals Ion conics and electron beams associated with auroral processes on Saturn

2009 ◽  
Vol 114 (A2) ◽  
pp. n/a-n/a ◽  
Author(s):  
D. G. Mitchell ◽  
W. S. Kurth ◽  
G. B. Hospodarsky ◽  
N. Krupp ◽  
J. Saur ◽  
...  
Keyword(s):  
Electron Beams ◽  
Ion Conics

scholarly journals On auroral ion conics and electron beams acceleration

1998 ◽  
Vol 25 (23) ◽  
pp. 4309-4312 ◽  
Author(s):  
Evgeny Mishin ◽  
Marek Banaszkiewicz
Keyword(s):  
Electron Beams ◽  
Ion Conics
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