Abstract
We discuss the film flow of liquid lithium planned for the target and coolant of BNCT (Boron Neutron Capture Therapy) using accelerators which makes tumors curable with cell-level selections. The internal structure of the boundary layer in the film flowing down on a guide plate is analyzed assuming that the guide plate is flat. The object of our research is the thin film flow in a vacuum because of the ambiance using accelerators, and they serve both as a target of accelerators and as a coolant for the target itself. The latter role requires high-speed film flow for sufficient removals of proton beam heating. In this paper, we show the design condition to maintain the above thin film flow under these severe conditions.
