A.20kV低能X線(xiàn) B.30kV低能X線(xiàn) C.鈷γ線(xiàn)或高能X線(xiàn) D.高能電子線(xiàn) E.以上任意一種射線(xiàn)均可
A.10~30keV光電效應(yīng)占優(yōu)勢(shì),30keV~25MeV康普頓效應(yīng)占優(yōu)勢(shì),25~100MeV電子對(duì)效應(yīng)占優(yōu)勢(shì) B.10~30keV康普頓效應(yīng)占優(yōu)勢(shì),30keV~25MeV光電效應(yīng)占優(yōu)勢(shì),25~100MeV電子對(duì)效應(yīng)占優(yōu)勢(shì) C.10~30keV電子對(duì)效應(yīng)占優(yōu)勢(shì),30keV~25MeV康普頓效應(yīng)占優(yōu)勢(shì),25~100MeV光電效應(yīng)占優(yōu)勢(shì) D.10~30keV光電效應(yīng)占優(yōu)勢(shì),30keV~25MeV電子對(duì)效應(yīng)占優(yōu)勢(shì),25~100MeV康普頓效應(yīng)占優(yōu)勢(shì) E.10~30keV康普頓效應(yīng)占優(yōu)勢(shì),30keV~25MeV電子對(duì)效應(yīng)占優(yōu)勢(shì),25~100MeV光電效應(yīng)占優(yōu)勢(shì)
A.對(duì)低能γ線(xiàn)和原子序數(shù)高的物質(zhì),康普頓效應(yīng)為主 B.對(duì)中能γ線(xiàn)和原子序數(shù)低的物質(zhì),光電效應(yīng)為主 C.對(duì)低能γ線(xiàn)和原子序數(shù)高的物質(zhì),電子對(duì)效應(yīng)為主 D.對(duì)低能γ線(xiàn)和原子序數(shù)高的物質(zhì),光電效應(yīng)為主 E.對(duì)高能γ線(xiàn)和原子序數(shù)高的物質(zhì),康普頓效應(yīng)為主