Negative muon capture ratios for nitrogen oxide molecules
Negative muon capture ratios for nitrogen oxide molecules
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DOI：
10.1007/s10967-018-6366-3
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发表时间：
2019-03-01
影响因子：
1.6
通讯作者：
Miura, Taichi
中科院分区：
文献类型：
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作者：
Ninomiya, Kazuhiko;Ito, Takashi U.;Miura, Taichi
根据三个氮氧化物样品(NO、N2O和NO2)在100kPa下的特征Muon X射线测量，精确地确定了每个原子的Muon俘获比。如果我们用提出的Muon俘获模型来解释实验结果，就需要在N原子上有比O原子更高的共价电子密度。通过分子轨道计算，我们发现N原子上只有最高占据轨道(HOMO)的电子分布占主导地位，HOMO中的电子对氮氧化物分子中的Muon俘获现象有显著的贡献。
Per-atom muon capture ratios are precisely determined from characteristic muonic X-ray measurements of three nitrogen oxide samples (NO, N2O, and NO2) at pressures below 100kPa. A higher density of covalent electrons at the N atoms relative to the O atoms is required if we explain the experimental results using the proposed muon capture models. From molecular orbit calculations, we found that the electron distributions of only the highest occupied molecular orbitals (HOMO) are dominant at the N atoms, and the electrons in the HOMO significantly contribute to the muon capture phenomena in the nitrogen oxide molecules.