• [1]

    K. Takagi et al., J. Crystal Grototh, 52, 2(1980), 580.[2] B. C. Crabmaler, IEEE Trans, NS. VNS-31 No. 1(1984),372[3] T. 0i et al., J. Appl. Phys. Lett., 36, 4(1980), 278.[4] Y. C. Zhu et al., N1M A244(1986), 579.[5] Harshaw/Filtrol, Harshaw Radiation Detector (1984) p.5.