The CO molecular ionization and Coulomb explosion are systematically investigated utilizing a high-resolution time-of-flight mass spectrometer. It is found that the main dissociation channels of highly charged CO${}^{3+}$, CO${}^{4+}$, and CO${}^{5+}$ are (2,1), (2,2), and (3,2) respectively, i.e., the charge-symmetric dissociation channel, and their kinetic energy release keep constant with increasing the laser intensity. We obtain the contribution of different molecular states to the dissociation channel by Gaussian fitting the distribution of the channel’s kinetic energy release. With the laser intensity of $1.0\times {10}^{15}$ W/${\mathrm{cm}}^2$, the angular distributions of CO${}^{x+}$($x$=2,3,4), which exhibit high anisotropy, are generated from these different dissociation channels. According to the present theory, we can qualitatively understand that the anisotropy depends on the molecular orbital profile.

使用高分辨率飞行时间质谱仪系统地研究了CO分子电离和库仑爆炸。发现高电荷CO的主要离解通道${}^{3+}$，一氧化碳${}^{4+}$和${}^{5+}$分别为（2,1），（2,2）和（3,2），即电荷对称解离通道，其动能释放随着激光强度的增加而保持恒定。我们通过高斯拟合通道动能释放的分布来获得不同分子态对解离通道的贡献。随着激光强度$1.0\times {10}^{15}$ W /${\mathrm{厘米}}^2$，CO的角分布${}^{X+}$（$X$从这些不同的解离通道生成具有高各向异性的= 2,3,4）。根据目前的理论，我们可以定性地理解各向异性取决于分子的轨道轮廓。