全球精确的神经网络潜在能量表面和国家对国家量子动力学计算Ne2S) + H2+/D2+ → NeH+/NeD+ + H/D反应
Zijiang Yang1, Wenwen Li1, Tao Xue1
1School of Physics and Electronic Technology, Liaoning Normal University, Dalian 116029, People's Republic of China.
The Journal of chemical physics
|September 3, 2025
概括
这项研究为NeH2+反应提供了一个新的潜在能量表面,对于理解等离子体物理和反应动态至关重要. 量子计算揭示了复杂的分离和直接抽象机制,
科学领域:
- 化学物理
- 量子动力学
- 计算化学
背景情况:
- 涉及Ne和H2+的质子转移反应对等离子体物理学至关重要.
- 了解基本反应动力学需要准确的潜在能量表面 (PES).
研究的目的:
- 构建一个高度精确的基态NeH2+潜在能量表面 (PES).
- 在新的PES上进行Ne+H2+/D2+反应的状态对状态量子力学计算.
主要方法:
- 开发了一个全球准确的NeH2+ PES,使用换不变的多项式神经网络方法.
- 在UCCSD (T) /AV5Z级别计算了35,035个ab initio点.
- 进行了Ne2S) + H2+/D2+ (v0 = 0, j0 = 0) 反应的状态对状态量子力学计算.
主要成果:
- 新的PES准确地描述了NeH2+系统.
- 对于接近值的碰撞能量,产物通过短暂的复杂解离形成.
- 在较高的碰撞能量下,直接抽象机制成为主导.
结论:
- 新建的PES可以对Ne+H2+系统进行精确的量子动力学研究.
- 未来的研究可以研究振动激发和反应物的空间对齐效应.
- 这项工作有助于对基本化学反应的基本理解.
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