Simulation of high speed capture of interstellar grains

星际粒子高速捕获模拟

• 批准号: 145470771
• 负责人: Privatdozent Dr.-Ing. Ralf Srama
• 金额: --
• 依托单位: Max-Planck-Institut für Kernphysik
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/145470771?language=en
• 关键词: Simulation; speed; capture; interstellar; grains

The overall goal of this project is to complete the collaboration within the Stardust Interstellar Preliminary Examination team (ISPE) in translating impact features into the particles original physical and chemical properties, and to use the currently available calibration material and experiments with impact ionisation mass spectrometers to open a new window to chemical analyses of interstellar dust grains as measured by the Cosmic Dust Analyser (CDA) in the saturnian system. This proposal contains four major tasks: ) Preparation and characterization of cosmic dust analogue samples for use in a Van-de-Graaff accelerator, b) Hyper-velocity impacts onto Stardust foil analogues and impact ionization target plates, c) Studies of impact crater morphologies, impact residues with simultaneous mass spectral analyses, and d) Data analyses with the Large Area Mass Analyser (LAMA) and with the CDA flight instrument.Impact phenomena will be examined at velocities above 7 km/s, producing an overlap between the velocities found for the Stardust interstellar dust collection campaigns and the higher velocities (>19 km/s) predicted for impacts onto CDA within the saturnian system. The ISPE work will be performed in cooperation with other SPP groups that are members of the ISPE collaboration (F. Brenker, Frankfurt, P. Hoppe, J. Leitner, MPI-C Mainz). The project is in the third phase and has a duration of two years.

该项目的总体目标是完成星尘号星际初步检查小组（ISPE）内部的合作，将撞击特征转化为粒子的原始物理和化学性质，并利用现有的校准材料和碰撞电离质谱仪的实验，为宇宙尘埃分析仪（CDA）测量的星际尘埃颗粒的化学分析打开一个新的窗口在土星系统中。该建议包括四项主要任务：用于Van-de-Graaff加速器的宇宙尘模拟样品的制备和表征，B）对星尘箔模拟物和撞击电离靶板的超高速撞击，c）研究撞击坑形态、撞击残留物，同时进行质谱分析，和d）用大面积质量分析仪和CDA飞行仪器进行数据分析，将检查速度超过7公里/秒时的撞击现象，在星尘号星际尘埃收集活动中发现的速度与土星系统内预测的撞击CDA的更高速度（>19 km/s）之间产生重叠。ISPE的工作将与ISPE合作组织的其他SPP小组合作进行（F。Brenker，法兰克福，P. Hoppe，J. Leitner，MPI-C美因茨）。该项目处于第三阶段，为期两年。