【摘要】 本文完善了T.Udagawa和T.Tamura等人发展的参数化方法,利用EFR-DWBA程序分析了导致连续态的²⁰⁸Pb(¹²C,⁸Be)²¹²Po的α转移反应的实验双微分能谱,从中提取了在²¹²Po核表面α粒子的预形成几率,结果与由α衰变实验数据提取的预形成几率在计算误差范围内一致。更多还原

【Abstract】 The method of parametrization of EFR-DWBA overlap integral developed by T. Udagawa and T. Tamura et al., is improved. Using the improved method we have fitted the experimental double differential energy spectrum of ⁸Be-cluster coming from the reaction ²⁰⁸Pb (¹²C, ⁸Be) ²¹²Po leading to the continuum states and extracted the preformation probability of α-cluster at the surface of ²¹²Po nucleus. Within the range of calculation error, the result is in agreement with that extracted from fitting the experimental data of α-decay.更多还原