THE DEVELOPMENT OF A LIQUID LITHIUM NEUTRON GENERATING TARGET FOR ACCELERATOR BASED NEUTRON CAPTURE THERAPY

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The prospect of realizing a stable and long-lived neutron-generating target using liquid lithium was investigated for an accelerator-based system which can be used for the selective treatment of cancer via boron-neutron capture therapy. Using an incident proton beam energy of 2MeV at a current of 20mA and a beam diameter of 3cm to generate neutrons from the ^7Li(p,n)^7Be reaction, it was confirmed that a stable liquid lithium flow (i.e., flow rate of 30m/s, 50mm in width, 50mm in length, thickness of 0.5mm) which can remove 40kW of heat, can be achieved along the inside surface of a cylindrical curved plate. From the experiments performed, the parameters necessary for the fabrication of the liquid lithium neutron generating target were determined