Helliwell, RA

1993

Helliwell, RA

Aspects of the Magnetospheric Amplification Phenomenon in Ducted Whistler-mode Waves

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MielkeThesis.pdf

1990

Gail, WB, Helliwell, RA

Gyroresonant Wave-Particle Interactions in a Dynamic Magnetosphere

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1989

de Sa, LAD, Helliwell, RA

Spectral Structure and Generation Mechanism of Ducted VLF Whistler Mode Sideband Waves

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Ngo, HD, Helliwell, RA

Electrostatic Waves Stimulated by VLF Whistler Mode Waves Scattering from Magnetic-field-aligned Plasma Density Irregularities

1969

Burtis, WJ, Helliwell, RA

Banded chorus - A new type of VLF radiation observed in the magnetosphere by OGO 1 and OGO 3.

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099.pdf

Heyborne, RL, Smith, RL, Helliwell, RA

Latitudinal Cutoff of VLF Signals in the Ionosphere

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100.pdf

1966

Morozumi, HM, Helliwell, RA

A Correlation Study of the Diurnal Variation of Upper Atmospheric Phenomena in the Southern Auroral Zone

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1966-01.pdf

1965

Helliwell, RA

Whistlers and Related Ionospheric Phenomena

1964

Helliwell, RA

Wave Particle Gyroresonance Interactions in the Earth's Outer Ionosphere

Helliwell, RA, Martin, LH

Association between Auroræ and Very Low-Frequency Hiss Observed at Byrd Station, Antarctica