[考古] 98台联24题

楼主: retryi12 (WOW)   2010-06-29 14:40:32
Find the lower limit of γ-ray frequency for pair production
(electron-positron creation)
(A)2.0*10^20 Hz(B)2.5*10^20 Hz(C)3.0*10^20 Hz(D)3.5*10^20 Hz(E)4.0*10^20 Hz
然后顺便问一下这个题目需要考虑静止能量?
谢谢~
作者: r19891011 (弧形)   2010-06-30 01:06:00
我猜要吧?

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