【摘要】 入射能量为69.5MeV的碳束轰击²⁷Al和^natCa靶,用△E-E计数器望远镜鉴别反应产物,测得Li、BC、B、N、O诸元素能谱,在两体反应假设下,得到了质心系能谱、角分布、E-θ平面上双微分截面d²σ/dEdθ的等高线图。假定在断裂时刻碎片相对运动动能可以忽略,绝热近似条件得到满足,并且碎片只有旋转对称的四极形变,从而得到决定断点处碎片运动的三个方程,求解这组方程,得到断点拉长度,并得到出射碎片的总动能。计算得到的出射碎片的形变参数是在0.28—0.44之间,其全阻尼能量与实验结果基本相符。由拟合实验角分布得到的平均寿命是（4—6）×10^-22秒。更多还原

【Abstract】 ²⁷Al and ^natCa target were bombarded by the Carbon beam at incident energy 69.5MeV. The reaction products were identified by △E-E telescope and the spectra of Li, Be, B, N, O elements were obtained.The values of deformation parameter of emitted fragmente are between 0.28—0.44. Calculated energy of full damped fragments are in agreement with the experimental data. The average life-time of the system is about （4—6）×10²² s.更多还原