Possible biomedical applications of antiproton beams: focused radiation transfer.
Possible biomedical applications of antiproton beams: focused radiation transfer.
复制标题
反质子束可能的生物医学应用：聚焦辐射传输。
作者：
L. Gray;T. Kalogeropoulos
对反质子在水中停止时损失的能量的计算表明，传输的辐射局限于停止点 1 毫米以内。辐射的这种“聚焦”主要是由于从发生湮灭的原子核发射出的严重电离粒子。目前，与其他带电粒子束相比，用于医疗目的的反质子束可能不具有成本效益，但其辐射传输的锐度与反质子射线照相相结合具有高度吸引力和独特的功能，可能会引起特殊的应用。
A calculation of the energy lost by antiprotons stopping in water shows that the radiation transferred is localized within 1 mm of the stopping point. This "focusing" of the radiation is mainly due to heavily ionizing particles emitted from the nuclei on which the annihilation takes place. At present antiproton beams for medical purposes may not be cost effective compared to other charged particle beams, but the sharpness of their radiation transfer combined with antiprotonic radiography are highly attractive and unique features that may invite special applications.