| ROCKET INSTRUMENTATION FOR AURORAL MEASUREMENTS - AEROBEE 3.615, |
SEP 1968 |
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| Authors:
Kay D. Baker; David A. Burt; Ralph H. Haycock; Karl G. Seljaas; L. Carl Howlett; UTAH UNIV SALT LAKE CITY UPPER AIR RESEARCH LABS
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 | An Aerobee rocket (3.615) was instrumented with a sophisticated array of devices for simultaneous, direct measurement of many parameters associated with the polar ionosphere during a visible auroral event. The instruments included electron and proton counters and scintillators, electron and ion density and temperature probes, x-ray counters, and auroral light photometers. Details of the rocket payload and the 24 different sensors are presented. (Author) |
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| LANGMUIR PROBES FOR DETERMINING IONOSPHERIC PARTICLE DENSITIES AND TEMPERATURES, |
JUN 1968 |
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| Authors:
Karl G. Seljaas; UTAH UNIV SALT LAKE CITY UPPER AIR RESEARCH LABS
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| The development of a rocket-borne Langmuir probe system for ionospheric research is described. Particular emphasis is placed on D- and E-region electron temperature and density measurement techniques. Present theory is discussed and found to be unsatisfactory for the rocket probe in the collision dominated D region. The development of the electronic instrumentation is cataloged and the results from a number of rocket flights are analyzed. The probe system that is ... |
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| ROCKET INSTRUMENTATION FOR SOLAR ECLIPSE MEASUREMENTS - 12 NOVEMBER 1966, |
APR 1967 |
88 pages |
| Authors:
Karl G. Seljaas; David A. Burt; UTAH UNIV SALT LAKE CITY UPPER AIR RESEARCH LABS
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 | The report details instrumentation designed to measure the parameters in the D-region of the ionosphere during a total solar eclipse. Four Nike-Hydac rockets were fired from Cassino, Brazil, in connection with the eclipse of 12 November 1966; a test flight round was flown on 5 November, and the remaining three rockets were fired during various phases of the eclipse on 12 November. The rocket payloads were identical and were designed ... |
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| ANTENNA IMPEDANCE PROBES IN HIGHLY DISTURBED IONOSPHERES. |
SEP 1965 |
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| Authors:
Karl G. Seljaas; UTAH UNIV SALT LAKE CITY UPPER AIR RESEARCH LABS
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| This report details instrumentation developed for measurement of electron densities in a highly disturbed ionosphere. The measurement determines by a standing wave technique, the RF impedance of thin cylindrical antennas immersed in the plasma of the ionosphere. The electron density can be deduced from the antenna impedance variations. A previously developed Standing Wave Impedance Probe was used at frequencies of 3 and 12 MHz in conjunction with a newly developed ... |
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