The excitation of the carbon \(2^+\) state at 4.439 MeV by \(70{-}150\) MeV electron impact and its subsequent decay to the ground state by photon emission is described within the distorted-wave Born approximation. The transition densities are obtained from the nuclear quasiparticle phonon model. The photon angular distributions are compared with earlier results and with experiment, including the influence of bremsstrahlung. Predictions for spin asymmetries in the case of polarized electron impact are also made.

中文翻译：

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在$$（e，e'\ gamma）$$（e，e'γ）反应中在$$ ^ {12} $$ 12 C中激发$$ 2 ^ + _ 1 $$ 2 1 +态

在畸变波博恩近似中描述了由\（70 {-} 150 \） MeV电子撞击在4.439 MeV激发碳\（2 ^ + \）态及其随后通过光子发射衰减至基态的过程。跃迁密度从核准粒子声子模型获得。将光子角度分布与早期结果和实验进行了比较，包括致辐射的影响。还可预测极化电子撞击情况下的自旋不对称性。