Formation of C60(2-) dianions in collisions between C60- and Na atoms.
Formation of C60(2-) dianions in collisions between C60- and Na atoms.
复制标题
C60- 和 Na 原子碰撞时形成 C60(2-) 双阴离子。
DOI：
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发表时间：
2004
影响因子：
8.6
通讯作者：
S. Tomita
中科院分区：
文献类型：
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作者：
Bo Liu;P. Hvelplund;S. Nielsen;S. Tomita
在C(-)(60)/C(-)(70)与Na原子的碰撞中，我们观察到了C2-60和C2-70的形成。C-60和C-70的电子转移截面分别为36+/-9和57+/-14A(2)。一个简单的模型研究表明，电子从Na原子转移到富勒烯的低位电子态，形成双阴离子。该方法产生了可用于光谱和寿命研究的C60双阴离子的皮安高能束流。
We have observed the formation of C2-60 and C2-70 in collisions between C(-)(60)/C(-)(70) and Na atoms. Cross sections for the electron transfer to the monoanion are determined to be 36+/-9 and 57+/-14 A(2) for C-60 and C-70, respectively. A simple model investigation suggests that the electron is transferred from a Na atom to a low-lying electronic state of the fullerene to form a dianion. The method leads to pico-ampere energetic beams of C60 dianions that can be used for spectroscopy and lifetime studies.