反质子与核的电荷交换反应和非弹性散射  

Antiproton -Nucleus Charge Exchange Reaction and Inelastic Scattering

作　　者：李扬国[1] 

机构地区：[1]汕头大学物理系

出　　处：《高能物理与核物理》1996年第11期1021-1027,共7页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金

摘　　要：在扭曲波冲量近似下，讨论了反质子与核的电荷交换反应Ａ（ｐ，ｎ）Ｂ和非弹性散射Ａ（ｐ，ｐ’）Ａ。并具体地计算能量为和４６．８ＭｅＶ下１２Ｃ（ｐ，ｎ）１２Ｂ，１８Ｏ（ｐ，ｎ）１８Ｎ和１８Ｏ（ｐ，ｐ’）１８Ｏ的微分截面．用严格的分波法处理扭曲波．非弹性散射的微分截面能符合实验．同时预示了在这些能量下，反质子与核发生电荷交换反应可能出现的微分截面理论结果．Under the distorted wave impulse approximation, we discuss the antiprotonnucleus charge exchange reaction A B and the inelastic scattering ACalculations are presented for the differential cross sections of 12C 12B,18O 18N and 18O 18O at antiprotion energies 179.7MeV and 46.8MeV. Distorted wave functions are calculated by the exact partial wave method. It is shown that the theoretical inelastic scattering results fit the experimental data quite well. The theoretical resultes of the diferential cross sections for antiproton-nucleus charge exchange reactions are also predicted.

关 键 词：反质子 电荷交换反应 非弹性散射 扭曲波 

分 类 号：O571.418[理学—粒子物理与原子核物理]