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11 B(p ,α1 ) 8Be (1 ) ( 2α)三体级联衰变中居间核8Be(1 ) 衰变成两个α粒子的连续能谱呈马鞍形分布 .编写了模拟三体级联衰变连续能谱的Monte Carlo程序 ,计算结果表明 :沿居间核8Be(1 ) 运动方向α发射强度增强的各向异性分布 ,能较好地解释实验结果 ,揭示p + 1 1 B核反应中8Be(1 ) 核α衰变各向异性发射 .
The continuum spectra of intergranular nucleus 8Be (1) decaying into two α-particles in a three-body cascade decay are saddle-shaped and the simulated three-body cascading decay The Monte Carlo program for continuous energy spectra shows that the anisotropy distribution of emission intensities along the movement direction α of the intermediate nucleus 8Be (1) can explain the experimental results well and reveal that 8Be (1 Nuclear α decay Anisotropy emission.