Parachute measurements of positive ion density of the middle atmosphere over the dip equator by spherical probe |
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| Institution: | 1. Department of Family Medicine, Oregon Health & Science University, Portland, Oregon;2. Biostatistics Group, School of Public Health, Oregon Health & Science University–Portland State University, Portland, Oregon;1. Collecge of Business and Management, VinUniversity, Hanoi, Viet Nam;2. VNU University of Economics and Business, Vietnam National University, Hanoi, Vietnam;3. Institute of Economics and Strategic Management, Hanoi, Viet Nam;1. Department of Chemistry, National Institute of Technology, Kurukshetra, Haryana 136119, India;2. Department of Chemistry, Osmania University, Hyderabad, Telangana 500007, India |
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| Abstract: | A parachute-borne gridded spherical probe has been used to measure the total positive ion density. Two launches were made, using Soviet M-100 rockets, on 22 and 29 April 1987, at 1200 UT, from an equatorial station, Thumba (8°N, 76°E) India. Data were obtained for the altitude region 10 to 80 km. A broad maximum around 15 km and a broad minimum around 60 km have been noticed in the ion current profiles obtained in both flights. The theory of the operation of the probe has been given. A detailed discussion of the results obtained has also been included. |
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