一种使存储反质子高度极化的方法
A Method to Polarize Stored Antiprotons to a High Degree
摘要：
极化反质子可以在储存环中通过与纯电子极化氢气靶的自旋相关相互作用产生。极化过程是基于从目标原子的极化电子到轨道反质子的自旋转移。在使用专用的大接受环对能量为$T\approx 40-170$ MeV的反质子束进行大约两个寿命的自旋过滤之后，反质子束的极化将达到$P=0.2-0.4$。极化反质子将为$\bar{p}p$相互作用中的自旋物理实验开辟新的独特的研究机会。
英文摘要：
Polarized antiprotons can be produced in a storage ring by spin--dependent interaction in a purely electron--polarized hydrogen gas target. The polarizing process is based on spin transfer from the polarized electrons of the target atoms to the orbiting antiprotons. After spin filtering for about two beam lifetimes at energies $T\approx 40-170$ MeV using a dedicated large acceptance ring, the antiproton beam polarization would reach $P=0.2-0.4$. Polarized antiprotons would open new and unique research opportunities for spin--physics experiments in $\bar{p}p$ interactions.
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