1965
DOI: 10.1029/jz070i023p05769
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Positive ion composition in the magnetoionosphere obtained from the Ogo-A satellite

Abstract: First results from the Ogo‐A positive ion spectrometer experiment are presented for the period September 23 through December 10, 1964. Thermal hydrogen and helium ion distributions extend from the lowest observations at 1500 km to an altitude of 30,000 km. The density obtained for H+ at 2000 km is of the order of 103 ions cm−3, and the He+ concentration is 1% of H+ over most of the altitude range. Whereas the concentration and distribution of H+ observed at the lower altitudes is in general agreement with theo… Show more

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Cited by 146 publications
(72 citation statements)
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“…After this time whistlers become more numerous and better defined; an example is shown in Figure 3 tion is detected on only one side of the plasmapause has been discussed in a previous paper [Carpenter, 1966). When suitable caution is observed, such as by using periods preceded and followed by more complete data, and by restriction to periods of high whistler activity, the method has been found to be very useful in [Carpenter, 1966;Taylor et al, 1965;Binsack, 1967]. The asymmetry shown in the ground data (triangles), with a dawn minimum and dusk maximum in the plasmapause radius, is also in agreement with expectations from previous work [Carpenter, 1966].…”
mentioning
confidence: 94%
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“…After this time whistlers become more numerous and better defined; an example is shown in Figure 3 tion is detected on only one side of the plasmapause has been discussed in a previous paper [Carpenter, 1966). When suitable caution is observed, such as by using periods preceded and followed by more complete data, and by restriction to periods of high whistler activity, the method has been found to be very useful in [Carpenter, 1966;Taylor et al, 1965;Binsack, 1967]. The asymmetry shown in the ground data (triangles), with a dawn minimum and dusk maximum in the plasmapause radius, is also in agreement with expectations from previous work [Carpenter, 1966].…”
mentioning
confidence: 94%
“…In two cases of simultaneous vlf and ion data from the same EOGO satellite, lite data, including results from ion mass spectrometers on OGO 1 and 3 [Taylor et al, 1965;Taylor et al, 1968;Brinton et al, 1968], Faraday cups on IMP 2 [Binsack, 1967] and on OGO 1 and 3 [Vasyliunas, 1968], and traps on Electron 2 and 4 [Bezrukikh, 19681. The reported plasmapause position measurements agree statistically both among themselves and with ground-based whistler measurements of the plasmapause radius [Carpenter, 1966;.…”
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confidence: 99%
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“…Several independent experiments (Gringauz et al, 1960;Carpenter, 1963;Taylor et al, 1965;.Binsack, 1967) have revealed the existence of a rather abrupt spatial de-crease in the ionization density of the earth's cold plasma envelope. The geomagnetic field-aligned surface separating regions of high-and low-density thermal plasma is called the plasmapause, and the geocentric equatorial distance to this boundary is referred to as the "knee distance".…”
Section: Relationship To Geomagnetic Disturbancementioning
confidence: 99%