[2] Zhi Jungong, Bo Li, Sheng Huali. Radiation Measurements, 2012, 47(9): 841.

[5] Rendell H M, Khanlary M R, Townsend P D, et al. Mineralogical Magazine, 1993, 57(2): 217.

[7] Gong Gelian, Xia Bin, Liu Shunsheng. Nuclear Instruments and Methods in Physic Research Section, B. Beam Interactions with Materials and Atoms, 2006, 215(1): 143.