氦原子捕获慢速反质子

J. Révai, N. Shevchenko
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引用次数: 5

摘要

摘要对导致反质子氦原子不同终态的部分截面进行了一致的量子力学计算。对于初始态对应的四体散射波函数和最终态对应的反质子氦波函数,采用绝热近似。进一步,引入了He核和反质子两个固定电荷场中的双电子波函数的对称和非对称有效电荷(SEC, NEC)近似。计算了广泛的反质子氦态和低于He原子第一电离阈值的反质子入射能量。详细讨论了某些截面丰富的低能结构的来源。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Capture of slow antiprotons by helium atoms
Abstract.A consistent quantum mechanical calculation of partial cross-sections leading to different final states of antiprotonic helium atom was performed. For the four-body scattering wave function, corresponding to the initial state, as well as for the antiprotonic helium wave function, appearing in the final state, adiabatic approximations were used. Further, symmetric and non-symmetric effective charge (SEC, NEC) approximations were introduced for the two-electron wave functions in the field of the two fixed charges of the He nucleus and the antiproton. Calculations were carried out for a wide range of antiprotonic helium states and incident energies of the antiproton below the first ionization threshold of the He atom. The origin of the rich low-energy structure of certain cross-sections is discussed in detail.
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