本题目来源于试卷: Physics Unit32: Elementary Particles，类别为 Generic Physics
[单选题]
When a positronium atom (elecrp7(b ;jxn uqdur1 /,jtron +* exsfosy4lmjd qm; 9 1+chi36 positron) decays, it emits two photons. What arefqms4o9m c hs+l*y63j ;die 1x the energies of the photons?
A. 0.511 MeV and 1.022 MeV
B. 0.225 MeV and 0.285 MeV
C. 0.256 MeV and 0.256 MeV
D. 0.511 MeV and 0.511 MeV
参考答案: D
本题详细解析:
暂无
| 
Post time 2024-1-22 02:15:01