In-situ measurement of ejecta using flash x-ray

Hiroshi Takakura, Yasuhiro Akahoshi, Masumi Higashide, Yasutaka Otsuji, Takao Koura, Hiroto Nagai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)


Space debris is increasing by development of the space environment. The impact of space debris with the International Space Station is considered to be questionable. The model of the space environment is made as one example of the measures. However, the modeling error of the ejecta has been focused recently. It is necessary to do the evaluation examination of ejecta. As for the examination, the size and the depth of crater on a witness plate, and size and velocity distribution of ejecta are measured and evaluated. The distribution of velocity can be measured from tracking fragments using pictures obtained with X-rays. In the measurement of velocity distribution, three flash X-ray tubes are used because two or more pictures are required for measurement of the three-dimensional distributions of space and velocity. However, identification of fragments was difficult in this method because the images irradiated by the different flash X-ray tubes are used for the identification. In this study, we design and develop double anode X-ray tube with different discharging paths so that it can make two irradiations in a short interval. We conduct experiments using the double anode X-ray tube in order to evaluate the performance of the double exposure system.

Original languageEnglish
Title of host publication60th International Astronautical Congress 2009, IAC 2009
Number of pages8
Publication statusPublished - 2009
Externally publishedYes
Event60th International Astronautical Congress 2009, IAC 2009 - Daejeon, Korea, Republic of
Duration: Oct 12 2009Oct 16 2009

Publication series

Name60th International Astronautical Congress 2009, IAC 2009


Other60th International Astronautical Congress 2009, IAC 2009
Country/TerritoryKorea, Republic of

All Science Journal Classification (ASJC) codes

  • Space and Planetary Science
  • Astronomy and Astrophysics


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