4π in-situ-detector for hypervelocity microparticles

4π超高速微粒原位探测器

• 批准号: 18360409
• 负责人: MIYACHI Takashi
• 金额: $ 10.82万
• 依托单位: Waseda University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2008
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18360409/
• 关键词: 宇宙利用・探査; 宇宙ダスト検出器; PZT; 超高速微粒子衝突; スペースダストモニター; その場計測型微粒子検出器; 圧電性PZT; 質量-速度分離

A detector that was intended to observe hypervelocity microparticles incident from every direction was studied. The detector comprised eleven pentagonal elements, which were mounted on a dodecahedral frame, and each was a 1mm thick piezoelectric PZT plate. The detector characteristics were investigated by bombarding them with hypervelocity particles and energetic Xe ions for the following topics ; output signal form, sensitivity, incident angle dependence, influence of temperature, possible cross talk, discrimination between true and false events, and radiation tolerance. Data analysis was performed by using events in which the output signal appeared as a single pulsed form. It was pointed out that the response of the element to the hypervelocity collision was not unique. A calibration procedure was proposed, where the amplitude and the rise time of the pulsed signal were pertinent to determine the mass and the velocity of particles during collision. The mass and velocity reproduced by the calibration were compared with those provided with the dust accelerator. As a result, the validity of the present calibration method was discussed by referring to the deviations of the reproduced values from the original ones. Moreover, possible improvements to the present calibration were pointed out. The present result would contribute to mount a dust detector onboard the BepiColombo mission.

研究了一种用于观测从各个方向入射的超高速微粒的探测器。该探测器由11个五边形单元组成，每个单元安装在一个十二面体框架上，每个单元都是一个1 mm厚的压电PZT板。通过用超高速粒子和高能Xe离子轰击探测器，研究了探测器的输出信号形式、灵敏度、入射角相关性、温度影响、可能的串扰、真假事件识别和辐射耐受性等方面的特性。通过使用其中输出信号呈现为单一脉冲形式的事件来执行数据分析。指出该单元对超高速碰撞的响应不是唯一的。提出了一种定标方法，利用脉冲信号的幅值和上升时间来确定碰撞过程中粒子的质量和速度。将定标得到的质量和速度与尘埃加速器提供的质量和速度进行了比较。因此，通过参考复制值与原始值的偏差，讨论了本标定方法的有效性。此外，还指出了对目前校准方法的可能改进。目前的结果将有助于在比佩科伦坡飞行任务上安装一个尘埃探测器。

项目成果

Calibration of pentagonal PZT element as a component of a 4-πreal-time detector

作为 4-π 实时探测器组件的五边形 PZT 元件的校准

• 发表时间: 2008
• 作者: 山田剛治;高柳大樹;鈴木俊之;藤田和央;T. Miyachi
• 通讯作者: T. Miyachi

Measurement of temperature after hypervelocity collision of microparticles in the range from 10 to 40 km/s

10 至 40 km/s 范围内微粒超高速碰撞后的温度测量

• 发表时间: 2008
• 期刊: Appl. Phys. Lett. 93
• 作者: T. Miyachi;M. Fujii;N. Hasebe;M. Miyajima O. Okudaira;S. Takechi;T. Onishi;S. Minami;H. Shibata;H. Ohashi;T. Iwai;K. Nogami S. Sasaki;E. Grun;R. Srama;N. Okada
• 通讯作者: N. Okada

Characteristics of piezoelectric lead zirconate titanate multilayered detector bombarded with hypervelocity iron particles

• DOI: 10.1016/j.asr.2008.09.008
• 发表时间: 2009-02
• 期刊: Advances in Space Research
• 影响因子: 2.6
• 作者: S. Takechi;T. Onishi;S. Minami;T. Miyachi;M. Fujii;Hasebe Nobuyuki;K. Mori;K. Nogami;H. Ohashi;S. Sasaki;H. Shibata;T. Iwai;E. Grün;R. Srama;N. Okada

Dependence of thickness of lead zirconate titanate material used as radiation detector

用作辐射探测器的锆钛酸铅材料的厚度依赖性

• 发表时间: 2009
• 期刊: J. Appl. Phys. 105
• 作者: S. Takechi;S. Morinaga;A. Kurozumi;T. Miyachi;M. Fujii;N. Hasebe;H. Shibata;T. Murakami;Y. Uchihori;N. Okada
• 通讯作者: N. Okada

Study of the characteristic lead zirconate titanate radiation detector using a pulsed xenon source

脉冲氙源锆钛酸铅特征辐射探测器的研究

• 发表时间: 2010
• 期刊: J.Appl.Phys. 107
• 作者: T.Miyachi;S.Takechi;M.Kobayashi;N.Okada
• 通讯作者: N.Okada