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在２５ＭｅＶ／ｕ４０Ａｒ＋１１５Ｉｎ反应的在平面和出平面大角度关联测量中，提取了碎片和α粒子之间的方位角关联函数和方位角非对称性因子．φ＝９０时，方位角关联函数呈现为最小值，表明在集体类转动效应影响下，反应产生的轻带电粒子和碎片优先在反应平面内发射．随着关联对质量的增加，在平面关联粒子的发射相对于束流轴不对称性逐渐增大．随着关联对质量的增加，相继衰变和粒子末态相互作用对φ＝０的关联粒子对方位角关联函数值的影响逐渐降低并直至消失，同时集体转动效应增强，方位角非对称性增加．
In the planar and out-of-plane large-angle correlation measurements of the 25MeV / u40Ar + 115In reaction, the azimuthal correlation function and the azimuthal asymmetry factor between the debris and the alpha particle are extracted. At φ = 90, the azimuthal correlation function assumes the minimum value, indicating that under the influence of collective rotation, the charged charged particles and fragments generated by the reaction preferentially emit in the reaction plane. As the mass of association increases, the asymmetry of the emission of plane-associated particles relative to the beam axis gradually increases. With the increase of correlation mass, the effect of successive decay and particle end-state interaction on the value of the azimuth correlation function of φ = 0 gradually decreases and disappears until the collective rotation effect increases and the azimuthal asymmetry increases.