U.S. Germany Cooperative Research: Three-Dimensional Imaging of Ionizing Collisions

该奖项支持Michael Schulz、Don Madison和密苏里大学罗拉分校的学生与德国海德堡马克斯·普朗克核物理研究所量子动力学系的Joachim Ulrich合作。这项合作将研究离子撞击下氦的单电离和双电离。美国研究小组最近首次获得了单一电离电子发射图案的完整三维图像，并确定了所有碰撞产物的运动学。研究发现，即使最先进的理论已经成功地描述了受限几何条件下的电离过程，也不能很好地再现测量的三维图像。目前的合作将开发新的理论方法，旨在确定重要的物理效应。这家德国集团在这次合作所需的实验技术方面享誉世界。实验和理论专业知识的结合将导致对正在研究的碰撞动力学的新的和根本上重要的洞察。

0224943SchulzThis award supports Michael Schulz, Don Madison and students from the University of Missouri, Rolla in a collaboration with Joachim Ulrich in the Department of Quantum Dynamics at the Max Planck Institute for Nuclear Physics in Heidelberg, Germany. The collaboration will investigate single and double ionization of helium by ion impact. The U.S. group recently obtained for the first time complete three-dimensional images of the electron emission pattern in single ionization with the kinematics of all collision products fixed. It was found that even state-of-the-art theories, which have been successful in describing the ionization process under restricted geometries, do not reproduce the measured three-dimensional images very well. The present collaboration will develop new theoretical approaches designed to identify the important physical effects. The German group is world renowned in the experimental techniques necessary to this collaboration. The combination of experimental and theoretical expertise will lead to new and fundamentally important insight into the collision dynamics under study.