New target with low photoneutron yield for LINAC radiotherapy applications

This paper presents three new materials composed of Ti_XV_0,035XCu_X-1,035 (X = 2, 4 and 6%), is proposed as Linear Accelerator target. Its response to electron beam based on photoneutron production, is assessed by MC simulation and nuclear track-etch methodology. The outcome is compared to a tungsten target irradiated by energetic 16 MeV electron beam. Photoneutron yield, of two energy groups (thermal and epithermal) were determined via converter matter ¹⁰B (98%) and Cd-filter by PADC-track density comparison. The multi-metal Ti₂V_0,07Cu_97.93 target related to therapy beam quality, resulted advantageous in comparison to that provided by W-target, commonly used in the LINAC.