U.S.-Japan Cooperative Science: Nuclei Far From Stability with Exotic Structure

0089581托马斯马赫该奖项支持密歇根州立大学的托马斯马赫教授和日本东京大学的樱井博史教授之间为期三年的合作研究项目。 研究人员将对具有奇异结构的远离稳定性的原子核进行研究。 拟议的研究将是迄今为止采用互补方法对丰中子核进行的最大规模的系统研究。 他们将联合收割机结合密歇根州立大学国家超导回旋加速器实验室（NSCL）及其日本合作者开发的实验方法和技术，以有效利用日本理化学研究所和NSCL提供的世界级外来离子束。 他们将研究富中子核结构的变化，因为它们在接近中子滴线时变得越来越不受束缚。 实验将测量理论上相关和可计算的量，如激发能，减少过渡矩阵元素和光谱因素。 这些结果将用于理论模型。该项目汇集了两个具有互补专业知识和研究能力的实验室的努力。 将日本量子蒙特卡罗代码（目前允许世界上最大规模的壳模型计算）与NSCL开发的有效核力相结合，将大大增强拟议合作的理论前景。 预计这项研究将大大推进我们对核结构从稳定到电荷Z=28的最富中子核的演化的理解。 本研究通过博士后、研究生和本科生的参与推进国际人力资源。 通过交流思想和技术，该项目将扩大我们的基础知识，促进国际理解与合作。 研究人员计划在科学期刊上发表研究结果，并在科学会议上报告研究结果。

0089581GlasmacherThis award supports a three-year collaborative research project between Professor Thomas Glasmacher of Michigan State University and Professor Hiroyushi Sakurai of the University of Tokyo in Japan. The researchers will be undertaking a study of nuclei far from stability with exotic structure. The research proposed will be the largest systematic study of neutron-rich nuclei with complementary methods to date. They will combine the experimental methods and techniques developed at the National Superconducting Cyclotron Laboratory (NSCL) at Michigan State and by their Japanese collaborators to make efficient use of the world-class exotic ion-beams available at RIKEN in Japan and at the NSCL. They will study the changes in the structure of neutron-rich nuclei as they become less and less bound when approaching the neutron-dripline. The experiments will measure theoretically relevant and calculable quantities such as excitation energies, reduced transition matrix elements, and spectroscopic factors. These results will then be used in the theoretical models. The project brings together the efforts of two laboratories that have complementary expertise and research capabilities. Combining the Japanese quantum Monte Carlo codes, which currently allow the largest-scale shell model calculations in the world, with the effective nuclear forces developed at the NSCL will greatly enhance the theoretical perspective in the proposed collaboration. It is expected that the research will significantly advance our understanding of the evolution of nuclear structure from stability to the most neutron-rich nuclei with charge Z=28. This research advances international human resources through the participation of postdocs, graduate students and undergraduate students. Through the exchange of ideas and technology, this project will broaden our base of basic knowledge and promote international understanding and cooperation. The researchers plan to publish results of the research in scientific journals and report on the findings at scientific meetings.