photoproton

例句：

1. 1.The photon beam was used to detect the presence of the particle.
   光子束被用来探测粒子的存在。
2. 2. The positron emitted by the decay of a radioactive nuclide is detected using a detector.
   放射性核素衰变产生的正电子被探测器检测到。
3. 3. The study of these particles has led to important advancements in medical imaging.
   对这些粒子的研究导致了医学成像的重要进步。