Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Japan.
Phys Rev Lett. 2011 Jul 29;107(5):053401. doi: 10.1103/PhysRevLett.107.053401. Epub 2011 Jul 26.
We have unambiguously identified interatomic Coulombic decay in NeAr from the inner-valence double-vacancy state Ne-Ar(2+)(3s(-2)) to outer-valence triple-vacancy states Ne(+)(2p(-1))-Ar(2+)(3p(-2)) by momentum-resolved electron-ion multicoincidence. This is the first observation of interatomic Coulombic decay where three electrons (3e) participate. The results suggest that this 3e interatomic Coulombic decay is significantly faster than other competing processes like fluorescence decay and charge transfer via curve crossing.
我们通过动量分辨的电子-离子多符合实验，明确地识别了 NeAr 中的原子间库仑衰变，其初始态为内壳层双空位态 Ne-Ar(2+)(3s(-2))，末态为外壳层三空位态 Ne(+)(2p(-1))-Ar(2+)(3p(-2))。这是首次观测到三个电子（3e）参与的原子间库仑衰变。实验结果表明，与其他竞争过程（如荧光衰减和通过曲线交叉的电荷转移）相比，这种 3e 原子间库仑衰变要快得多。
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