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

该奖项由美国-巴西合作科学计划颁发，支持理论物理学领域的合作研究，在美国由田纳西大学诺克斯维尔分校的Michael W. Guidry博士和劳伦斯伯克利实验室的John O. Rasmussen博士进行，在巴西由劳伦斯伯克利实验室的John O. Rasmussen博士进行。来自巴西里约热内卢联邦大学的Raul Donangelo和Filipe Canto以及圣保罗大学的Mahir Hussein博士。研究的重点将是使用半经典方法来获得当其中一个碰撞伙伴变形时重离子碰撞的理论描述。这项工作可能会导致一个实用和可靠的工具来解释现在和未来的重离子实验。该项目将扩展先前的计算，对重离子转移反应进行更全面的处理，包括对双粒子和单粒子转移反应的处理，并将纳入核结构的新思想，如费米子动力学对称模型。这种形式将允许研究大量的高自旋转移数据，目前很少有理论计算，并且应该证明对理解将在GAMMASPHERE和EUROBALL中可用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.