Nuclear Structure and Reaction Mechanism Studies Using Intermediate Energy Heavy Ions (Physics)

这笔拨款将支持一项利用中能重离子束研究核反应机制和核结构的计划，该计划将在未来三年内在美国和加拿大的许多不同的加速器实验室进行。反应机理研究将探讨随着束流能量的增加向深度非弹性和破碎反应模式的转变。此外，将进行中子-质子相关测量，以研究重离子反应中核子发射的核体积的热性质和空间/时间范围，以及研究氘核的第一激发态的性质。核结构研究将使用新的巴黎圣母院/阿贡伽玛射线设备进行，并将重点研究钆和铕同位素的超变形，奇质量铊原子核的高自旋态，以及钕同位素的形状转变。

This grant will support a program of studies of nuclear reaction mechanisms and nuclear structure using intermediate energy heavy-ion beams, to be carried out at a number of different accelerator laboratories in the United States and Canada over the next three years. The reaction mechanism studies will probe the transition with increasing beam energy to deep-inelastic and fragmentation reaction modes. In addition, neutron-proton correlation measurements will be undertaken to investigate the thermal properties and space/time extent of the nuclear volume from which nucleons are emitted in heavy-ion reactions, as well as to study the properties of the first excited state of the deuteron. The nuclear structure studies will be carried out using the new Notre Dame/Argonne gamma-ray facility, and will focus on a search for superdeformation in gadolinium and europium isotopes, high-spin states in odd-mass thallium nuclei, and shape transitions in neodymium isotopes.