Thermal stability of BNCT neutron production target synthesized by lithium deposition and ion implantation

Ishiyama, Shintaro; Baba, Yuji  ; Fujii, Ryo*; Nakamura, Masaru*; Imahori, Yoshio*

To testify thermal stability of the BNCT neutron target synthesized by lithium deposition and ion implantation, laser heating test of the LiN/Li/Cu tri-layered target was conducted in high vacuum chamber of 10 Pa and thermal stability of the tri-layered target was characterized by X-ray photoelectron spectroscopy. Following conclusions were derived; (1) The LiN/Li/Cu tri- layered target with very low oxide and carbon contamination was synthesized by lithium deposition and ion implantation techniques without HO and O additions (2) The starting temperature of evaporation of the LiN/Li/Cu tri-layered target increased by 120 K compared to that of the Li/Cu target and (3) frequent repair synthesis of the damaged LiN/Li/Cu tri-layered target caused by evaporation is possible.