Multimodal characteristics of a piezoelectric lead zirconate titanate element impacted with iron particles having velocities above 20 km/s

作者：Miyachi Takashi^*; Fujii Masayuki; Hasebe Nobuyuki; Okudaira Osamu; Takechi Seiji; Onishi Toshiyuki; Minami Shigeyuki; Kobayashi Masanori; Iwai Takeo; Gruen Eberhard; Srama Ralf; Okada Nagaya

来源：Advances in Space Research, 2011, 48(3): 570-577.

DOI：10.1016/j.asr.2011.04.007

• Hypervelocity collision
• Multimodal PZT response
• Cosmic dust detector

The responses of a piezoelectric lead zirconate titanate (PZT) element to hypervelocity collisions were experimentally studied. In this study, the particles of masses ranging from 0.3 to 10 fg were made to collide with PZT at velocities between 20 and 96 km/s. The amplitude and the corresponding rise time of the single-pulse output signals that were produced in the piezoelectric PZT element were measured to determine the possible collision states. The results revealed an apparently multimodal output; three classes were assumed to be involved in the pulse formation mechanism. The amplitude and rise time were sensitive to the collision velocity. The multimodal behavior implied that the PZT-based cosmic dust detectors should be calibrated according to the class they belong to.

• 出版日期2011-8-3