重离子轰击导致水分子造成的电离和解离在众多领域都有重要研究价值。实验发现Bragg峰能区水分子解离有明显多重电离效应，且和反应道强相关。目前，国际上能解决该问题的经典理论模型还未有报道。本项目拟从我们已建立的原子多重电离COBI模型出发，考虑电子分子态和空间构型修正，建立能计算Bragg峰能区强扰动下，重离子轰击水分子多重电离并解离的绝对截面经典计算模型。同时,我们将计算伴随入射离子电荷损失的多重电离和解离截面，深入理解解离过程和反应道的关联。

Multiple ionization and fragmentation of water molecule impacted by heavy ions are important in many scientific fields. The experiments had found that the multiple ionization is very important in water molecule dissociation at Bragg peak energies, and the dissociation is strongly correlated with the reaction channels. Until now, the calculation method of this problem by the classical way has not been reported yet. We will construct a theoretical model based on our previous work of COBI model, to give good understandings of multiple ionization effect and the reaction channel correlations.