The Theory of the Dynamics of Hadronic and Muonic Atoms

1.研究了强激光场对正电子与反质子低能碰撞中反氢形成速率的影响。研究发现，只要适当选择激光场的参数(如强度、频率、偏振)，这一速率就会增加。2.建立了一个简单的非绝热电离模型，近似地得到了奇异原子形成的截面。它很好地再现了简单系统的精确量子力学结果，也使人们有可能获得关于复杂系统的信息，对于这些复杂系统，精确的计算是不可能的。3.在实验中只对氦发现了超长寿命的奇异原子，但从理论上预测了长寿命奇异锂原子和其他奇异碱性原子的存在和形成的可能性。4.利用超球坐标耦合通道(HSCC)方程对类氢介子原子到质子同位素的Muon转移进行了量子力学处理，得到了非常精确的截面。5.利用复势用一种全新的理论研究了正电子与原子和分子碰撞中的正负电子对湮没。这导致了与著名的Wigner阈值定律截然不同的阈值行为，并在直接和间接湮灭过程之间产生了新的干涉效应。6.文献中预测的氦离子正电子散射中的一些特别广泛的共振已经被精确的HSCC计算和一种新的共振分析理论方法彻底否定。7.用HSCC方法精确地研究了正电子与正电子的碰撞电子脱离。在横截面上发现了丰富的共振结构。

1.The effects of a strong laser field on the formation rate of antihydrogen in low-energy collisions between positronium with antiproton have been studied. The rate has been found to increase if the parameters for the laser field (e.g., intensity, frequency ; polarization) are appropriately chosen.2.A simple diabatic-ionization model has been established to obtain the cross section for exotic atom formation approximately. It reproduces accurate quantum mechanical results for simple systems very well, and also makes it possible to obtain information on complex systems for which accurate calculations are impossible.3.Extraordinarily long-lived exotic atoms were found experimentally only for helium, but the existence of and the possibility of the formation of long-lived exotic lithium and other exotic alkali atoms have been predicted theoretically.4.Muon transfer from hydrogenlike muonic atoms to proton isotopes has been treated quantum mechanically in terms of the hyperspherical-coordinate coupled-channel (HSCC) equations to obtain extremely accurate cross sections.5.Electron-positron pair annihilation in collisions of positrons with atoms and molecules has been studied by an entirely new theory using a complex potential. This leads to a threshold behavior that is very different from the well-known Wigner threshold law, and to newly found interference effects between direct and indirect annihilation processes.6.Some particularly broad resonances in positron scattering by the helium ion predicted in the literature have been denied definitively by the accurate HSCC calculations and a new theoretical method for resonance analysis.7.Photon-impact electron detachment from the positronium negative ions has been studied accurately by using the HSCC method. Rich resonance structure in the cross sections has been found.