The short-time regime of spontaneous light emission by few-electron ions is examined in detail, with a specific emphasis on the angular momentum of the emitted light. It is found that, in general, photons carrying a higher angular momentum are emitted with important probabilities, at short times, in transitions that are not of the electric dipole type. The probability of emission of such photons is found to be parametrically non-negligible in this time regime, and even numerically dominant for some cases. It is also found that, in all time regimes, the emission of electric 2 ⁿ⁺¹-pole fields is typically numerically dominant over the emission of magnetic 2 ⁿ -pole fields by many orders of magnitude. These results refine and deepen our understanding of the emission of angular momentum-carrying light by simple atomic systems.

详细检查了少数电子离子自发发光的短时机制，特别强调了发射光的角动量。已经发现，通常，携带较高角动量的光子在短时间内以非电偶极型跃迁的重要概率发射。发现这种光子的发射概率在此时间范围内在参数上不可忽略，在某些情况下甚至在数值上占优势。还发现，在所有时间范围内，电2 ^{n +1}极场的发射通常在数值上优于磁2 ⁿ的发射 极场的数量级。这些结果完善并加深了我们对通过简单原子系统发射角动量光的理解。