Nuclear Structure at High Spin (Physics)

这项拨款支持物理实验研究 原子核在极端旋转速度下的运动。 里面的核子 这种快速旋转系统受到离心作用， 科里奥利相互作用，引入显着的变化， 核结构，包括核形状的变化， 转动惯量 这些相互作用也导致 超流体和刚性行为之间的过渡， 集体运动和单粒子运动。 这些现象将 在60到90个核子的原子核中， 射线探测器快速旋转的富中子系统 通过重离子诱导的深部非弹性碰撞， 也可以用这个数组来研究。 另一组实验将寻找 理论上预期的电相变 在不同形状的状态之间，使用 六电子能谱仪与伽玛探测器的组合 阵列在橡树岭国家实验室。

This grant supports experimental research on the physics ofnuclei at extreme rotational velocities. The nucleons inside such a rapidly rotating system are subject to centrifugal and Coriolis interactions which introduce significant changes in nuclear structure, including changes in nuclear shape and moment of inertia. These interactions also cause transitionsbetween superfluid and rigid behaviour and between collective and single-particle motion. These phenomena will be studiedin nuclei with 60 to 90 nucleons using an array of gamma ray detectors. Rapidly rotating neutron-rich systems produced by means of heavy ion induced deep inelastic collisions will also be studied with this array. Another set of experiments will search for thetheoretically expected electric monopole transitions betweenstates with different shapes, using an array of sixelectronspectrometers in combination with a gamma detector array at the Oak Ridge National Laboratory.