U.S.-Brazil Cooperative Research: Semiclassical Methods forHeavy Ion Collisions

这项来自美国-巴西合作科学计划的奖项支持由田纳西大学诺克斯维尔分校的迈克尔·W·古德里博士和劳伦斯·伯克利实验室的约翰·O·拉斯穆森博士在美国进行的理论物理合作研究，在巴西，里约热内卢联邦大学的劳尔·多南杰洛博士和菲利佩·坎托博士以及圣保罗大学的马希尔·侯赛因博士发表了上述研究报告。研究的重点将是使用半经典方法来获得重离子碰撞的理论描述，当碰撞对之一变形时。这项工作可能会带来一个实用而可靠的工具来解释现在和未来的重离子实验。该项目将把以前的计算扩展到更全面地处理重离子转移反应，包括处理两粒子和单粒子转移反应，并将在核结构中纳入新的想法，如费米子动力学对称模型。形式主义将允许研究大量的高自旋转移数据，目前几乎没有理论计算，并且应该被证明对于理解将在GAMMASPHERE和Euroball中获得的转移数据是有价值的。该项目汇集了一群国际知名的物理学家，他们过去合作得很好。

This award from the U.S.-Brazil Cooperative Science Program supports collaborative research in theoretical physics to be conducted, in the U.S. by Dr. Michael W. Guidry of the University of Tennessee, Knoxville and Dr. John O. Rasmussen of the Lawrence Berkeley Laboratory and, in Brazil by Drs. Raul Donangelo and Filipe Canto of the Federal University, Rio de Janeiro and Dr. Mahir Hussein of the University of Sao Paulo. The focus of the research will be to use semiclassical methods to gain a theoretical description of heavy-ion collisions when one of the collision partners is deformed. The work could lead to a practical and reliable tool to interpret present and future heavy-ion experiments. The project will extend previous calculations to a more comprehensive treatment of heavy-ion transfer reactions including the treatment of two- and one-particle transfer reactions, and will incorporate new ideas in nuclear structure such as the Fermion Dynamical Symmetry Model. The formalism will permit study of a substantial body of high-spin transfer data for which there are presently few theoretical calculations, and should prove valuable for understanding transfer data that will become available with GAMMASPHERE and EUROBALL. The project brings together a group of internationally known physicists who have collaborated well in the past.