Thomson scatter radar detection of D‐region negative ions at Arecibo

S. Ganguly; J. D. Mathews; C. A. Tepley

doi:10.1029/GL006i002p00089

Thomson scatter radar detection of D‐region negative ions at Arecibo

S. Ganguly, J. D. Mathews, C. A. Tepley

Electrical Engineering

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31 Scopus citations

Abstract

The Arecibo 430 MHz radar has been used to measure D region Thomson scatter power spectra which display bandwidth and power variations with altitude and solar zenith angle which are consistent with the presence of negative ions. The negative ion‐to‐electron number density ratio (λ⁻), electron density, and electron‐to‐ion temperature ratio (T_e/T_i) have been derived from the spectral data and presented for noontime and sunset conditions. The λ⁻ = 1 level is found to occur near 70 km at noon and near 80 km at sunset. Values of T_e/T_i in the range 1.0 to 1.5, due to probing pulse heating, were observed.

Original language	English (US)
Pages (from-to)	89-92
Number of pages	4
Journal	Geophysical Research Letters
Volume	6
Issue number	2
DOIs	https://doi.org/10.1029/GL006i002p00089
State	Published - Feb 1979

All Science Journal Classification (ASJC) codes

Geophysics
General Earth and Planetary Sciences

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title = "Thomson scatter radar detection of D‐region negative ions at Arecibo",

abstract = "The Arecibo 430 MHz radar has been used to measure D region Thomson scatter power spectra which display bandwidth and power variations with altitude and solar zenith angle which are consistent with the presence of negative ions. The negative ion‐to‐electron number density ratio (λ−), electron density, and electron‐to‐ion temperature ratio (Te/Ti) have been derived from the spectral data and presented for noontime and sunset conditions. The λ− = 1 level is found to occur near 70 km at noon and near 80 km at sunset. Values of Te/Ti in the range 1.0 to 1.5, due to probing pulse heating, were observed.",

author = "S. Ganguly and Mathews, {J. D.} and Tepley, {C. A.}",

year = "1979",

month = feb,

doi = "10.1029/GL006i002p00089",

language = "English (US)",

volume = "6",

pages = "89--92",

journal = "Geophysical Research Letters",

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publisher = "American Geophysical Union",

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T1 - Thomson scatter radar detection of D‐region negative ions at Arecibo

AU - Ganguly, S.

AU - Mathews, J. D.

AU - Tepley, C. A.

PY - 1979/2

Y1 - 1979/2

N2 - The Arecibo 430 MHz radar has been used to measure D region Thomson scatter power spectra which display bandwidth and power variations with altitude and solar zenith angle which are consistent with the presence of negative ions. The negative ion‐to‐electron number density ratio (λ−), electron density, and electron‐to‐ion temperature ratio (Te/Ti) have been derived from the spectral data and presented for noontime and sunset conditions. The λ− = 1 level is found to occur near 70 km at noon and near 80 km at sunset. Values of Te/Ti in the range 1.0 to 1.5, due to probing pulse heating, were observed.

AB - The Arecibo 430 MHz radar has been used to measure D region Thomson scatter power spectra which display bandwidth and power variations with altitude and solar zenith angle which are consistent with the presence of negative ions. The negative ion‐to‐electron number density ratio (λ−), electron density, and electron‐to‐ion temperature ratio (Te/Ti) have been derived from the spectral data and presented for noontime and sunset conditions. The λ− = 1 level is found to occur near 70 km at noon and near 80 km at sunset. Values of Te/Ti in the range 1.0 to 1.5, due to probing pulse heating, were observed.

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JO - Geophysical Research Letters

JF - Geophysical Research Letters

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Thomson scatter radar detection of D‐region negative ions at Arecibo

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