Estimating the impact parameters of cosmic dust particles using a piezoelectric lead zirconate titanate detector |
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| Authors: | S Takechi T Miyachi M Fujii N Hasebe K Nogami H Ohashi S Sasaki H Shibata T Iwai E Grün R Srama N Okada |
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| Institution: | 1. School of Mathematics and Statistics, Beijing Institute of Technology, Beijing 100081, PR China;2. Department of Mathematics, University of British Columbia, Vancouver V6T 1Z2, Canada;3. School of Mathematics, University of the Witwatersrand, Private Bag 3, Wits 2050, Johannesburg, South Africa;1. Department of Chemistry and Graduate School of Materials Science, Gifu University, Gifu 501-1193, Japan;2. Development Division, Iwaki Laboratories, Kunimine Industries Co., Ltd., Fukushima 972-8312, Japan |
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| Abstract: | A cosmic dust detector for installation on a satellite is currently being developed using piezoelectric lead zirconate titanate (PZT), which can possess both functions of the collector and the transducer. The characteristics of the PZT detector have been studied by bombarding it with hypervelocity particles supplied by a Van de Graaff accelerator. The front surface of the detector used in this study was covered with a white paint to reduce any increase in the temperature due to the solar radiation. There was a linear relationship between the rise time of the signal produced by the detector and the particle's velocities, which were above 10 km/s on impact. This implies that individual particle velocities on impact can be inferred through the empirical formula derived from the data obtained from the PZT detector. |
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