Phillips A B, Prull D E, Ristinen R A, Kraushaar J J
Health Phys. 1986 Sep;51(3):337-42. doi: 10.1097/00004032-198609000-00006.
Neutron-induced gamma-ray-emitting radionuclides in components and surroundings of the University of Colorado 1.3-m sector-focusing cyclotron have been measured with Ge(Li) and HPGe detectors. These measurements were made before decommissioning of the cyclotron and before approving release of the accelerator components and building space for other uses. In addition to the activities expected from previous published work, 13.3-y 152Eu and 8.6-y 154Eu were found in the concrete shielding with specific activities of tens of becquerels per kilogram (a few nanocuries per kilogram).
利用锗锂探测器和高纯锗探测器，对科罗拉多大学1.3米扇形聚焦回旋加速器的部件及周围环境中中子诱发的γ射线发射放射性核素进行了测量。这些测量是在回旋加速器退役之前以及批准将加速器部件和建筑空间用于其他用途之前进行的。除了先前发表的工作中预期的活度外，在混凝土屏蔽层中还发现了半衰期为13.3年的152铕和半衰期为8.6年的154铕，其比活度为每千克几十贝克勒尔（每千克几纳居里）。
