The Suborbital Particle Aggregation and Collision Experiment (SPACE): studying the collision behavior of submillimeter-sized dust aggregates on the suborbital rocket flight REXUS 12.
The Suborbital Particle Aggregation and Collision Experiment (SPACE): studying the collision behavior of submillimeter-sized dust aggregates on the suborbital rocket flight REXUS 12.
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亚轨道粒子聚集和碰撞实验 (SPACE)：研究 REXUS 12 亚轨道火箭飞行中亚毫米级尘埃聚集体的碰撞行为。
DOI：
10.1063/1.4819443
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
J. Blum
中科院分区：
文献类型：
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作者：
J. Brisset;D. Heißelmann;S. Kothe;R. Weidling;J. Blum
亚轨道粒子聚集和碰撞实验(SPACE)是研究亚毫米级、高孔隙率尘埃聚集体碰撞特性的一种新方法。这个实验的设计、建造和实施是为了增加我们对主宰行星形成第一阶段的过程的了解。在这一阶段，行星前体的生长是通过将微米大小的尘埃颗粒凝聚成至少毫米到厘米大小的聚集体来实现的。然而，从如此形成的积木中形成更大的天体还没有完全被理解。最近关于尘埃增长的数值模型缺乏亚毫米尺寸范围内的实验研究的特别支持，因为这些粒子预计将以低于1厘米/S的非常温和的相对速度碰撞，而这只能在减重环境中实现。空间实验研究了几个真空玻璃容器内硅酸盐-粉尘集合体的碰撞行为，这些容器被振荡器搅动，以选定的速度诱导所需的碰撞。高速摄像机正在观测尘埃聚集体，从而能够确定原行星尘埃类物质的碰撞特性。用REXUS(大学生火箭实验)12火箭进行亚轨道飞行所获得的数据将直接实施到最先进的尘埃增长和碰撞模型中。
The Suborbital Particle Aggregation and Collision Experiment (SPACE) is a novel approach to study the collision properties of submillimeter-sized, highly porous dust aggregates. The experiment was designed, built, and carried out to increase our knowledge about the processes dominating the first phase of planet formation. During this phase, the growth of planetary precursors occurs by agglomeration of micrometer-sized dust grains into aggregates of at least millimeters to centimeters in size. However, the formation of larger bodies from the so-formed building blocks is not yet fully understood. Recent numerical models on dust growth lack a particular support by experimental studies in the size range of submillimeters, because these particles are predicted to collide at very gentle relative velocities of below 1 cm/s that can only be achieved in a reduced-gravity environment. The SPACE experiment investigates the collision behavior of an ensemble of silicate-dust aggregates inside several evacuated glass containers which are being agitated by a shaker to induce the desired collisions at chosen velocities. The dust aggregates are being observed by a high-speed camera, allowing for the determination of the collision properties of the protoplanetary dust analog material. The data obtained from the suborbital flight with the REXUS (Rocket Experiments for University Students) 12 rocket will be directly implemented into a state-of-the-art dust growth and collision model.