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首页> 外文期刊>Journal of Physics, G. Nuclear and Particle Physics: An Institute of Physics Journal >A model for explaining fusion suppression using the classical trajectory method
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A model for explaining fusion suppression using the classical trajectory method

机译：用经典轨迹法解释融合抑制的模型

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A two-dimensional classical trajectory model is used to explain the projectile breakup and above-barrier fusion suppression for the reactions ~6Li+~(209)Bi, ~6Li+~(152)Sm and ~6Li+~(144)Sm. To obtain the initial conditions of the equations of motion, a simplified model of the 6Li nucleus has been developed. Numerical solutions of the equations lead to the classification of orbits into breakup and no-breakup trajectories. The breakup fraction is studied as a function of the impact parameter. Using quantum mechanical arguments, the cut-off impact parameter for fusion is determined by proposing a sharp cut-off model which assumes that there is an angular momentum limit to fusion. We introduce a simple formula for the explanation of fusion suppression, according to which fusion suppression is given by the average of the breakup fractions evaluated at impact parameters ranging from head-on collision up to the cut-off impact parameter. We find that there is excellent agreement between the experimental fusion cross section (σ_(exp)) and the calculated fusion cross section (σ_(cal)) for the systems studied.
机译：二维经典轨迹模型用于解释〜6Li +〜（209）Bi，〜6Li +〜（152）Sm和〜6Li +〜（144）Sm反应的弹丸破裂和高阻融合抑制。为了获得运动方程的初始条件，已经开发了6Li核的简化模型。方程的数值解导致将轨道分为破裂和不破裂轨迹。研究破碎率与冲击参数的关系。使用量子力学论据，通过提出一个尖锐的截断模型来确定用于融合的截断影响参数，该模型假定对聚变存在角动量极限。我们引入一个简单的公式来解释融合抑制，根据该公式，融合抑制是由在从正面碰撞到截止碰撞参数的冲击参数下评估的破碎分数的平均值给出的。我们发现，对于所研究的系统，实验融合截面（σ_（exp））与计算出的融合截面（σ_（cal））之间存在极好的一致性。

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