反质子与原子核的非弹性碰撞

ANTIPROTON-NUCLEUS INELASTIC COLLISION

在扭曲波冲量近似的框架下,本文讨论了A(p,p)A~*非弹性碰撞.并具体地计算了能量为46.8MeV和179.7MeV的^(12)C(p,p)C~*的2^+,3^-态微分截面.用严格的分波法处理扭曲波.计算表明,在低能区,反质子非弹性过程用DWIA是一个好的近似.同时,讨论了束缚态行为的重要性.由于反质子受核的强吸收原因,要求具有准确的核外束缚态波函数.

In the framework of the distorted wave impulse approximation, we discuss the antiprotonnucleus inelastic scattering. Calculations are presented for the ^(12)C(p,p')^(12)C~*, 2^+ and 3^+ states at antiproton energies of 46.8 and 179.7 MeV. Distorted waves are calculated by exact partial wave calculations. It is shown that the DWIA is quite good for the low energies. The importance of the behaviour of bound state wave function is discussed. Due to the strong absorption of antiproton by nucleus, the use of exact bound state wave function is essential.