Tethered rocket experiment (Charge 2): Initial results on electrodynamics

S. Sasaki, K. I. Oyama, N. Kawashima, T. Obayashi, K. Hirao, W. J. Raitt, N. B. Myers, P. R. Williamson, P. M. Banks, W. F. Sharp

研究成果: Article同行評審

16 引文 斯高帕斯(Scopus)

摘要

The tethered mother‐daughter rocket experiment (Charge 2) was carried out by a NASA sounding rocket, Black Brant 9, at White Sands Missile Range in New Mexico in December 1985. It was intended to perform a new type of active experiment in space by applying a high voltage between the two payloads, as well as by injecting an electron beam from the tethered rocket system. An insulated conductive wire connecting the two payloads was deployed up to its maximum length of 426 m during the flight. An electron beam from 0.5 to 48 mA at 1 keV was injected from the mother payload. A voltage up to 500 V was applied between the two payloads with and without the beam injection. This paper describes the initial results on the electrodynamic effects induced by the potential difference between the two payloads. Measurements of the v×B electromotive force and the voltage/current characteristics up to 500 V have been explained by a model in which the ion current to the negatively biased payload effectively limited the tether current. Two kinds of VLF waves were observed when the bias voltage was applied between the two payloads; narrow‐band emission at 2–4 kHz and broadband emission up to 15 kHz, depending on the applied voltage. The characteristic features of these emissions suggest that the lower hybrid instability (modified two‐stream instability) driven by the potential difference between the rocket and the ambient plasma was responsible for the wave generation.

原文English
頁(從 - 到)975-988
頁數14
期刊Radio Science
23
發行號6
DOIs
出版狀態Published - 1988

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學
  • 地球與行星科學(全部)
  • 電氣與電子工程

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