Excited state fragments following molecular ionization and dissociation in strong fields
Excited state fragments following molecular ionization and dissociation in strong fields
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强场中分子电离和解离后的激发态碎片
DOI：
10.1063/1.1291965
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发表时间：
1999
影响因子：
--
通讯作者：
G. Gibson
中科院分区：
文献类型：
--
作者：
J. Nibarger;M. Li;Saipriya V. Menon;G. Gibson
我们第一次观察到双原子分子中的电荷不对称解离使其中一个碎片处于电子激发态。使用一种新的双脉冲技术，我们确定了解离后碎片的状态。例如，我们观察到反应I2+（pulse1）→（I22+）**→I0++（I2+）*+（pulse2）→I0++I3+，证明I2+碎片一定处于激发态。更一般地说，正如不对称解离意味着初始分子离子处于激发电子态，在解离后电离中观察到的不对称通道表明离子碎片本身是电子激发的。
We have observed for the first time that charge asymmetric dissociation in diatomic molecules leaves one of the fragments in an electronically excited state. Using a new double pulse technique, we determine the state of the post dissociation fragments. For example, we observed the reaction I2+(pulse1)→(I22+)**→I0++(I2+)*+(pulse2)→I0++I3+ demonstrating that the I2+ fragment must have been in an excited state. More generally, just as asymmetric dissociation implies that the initial molecular ion is in an excited electronic state, the observation of asymmetric channels in the post-dissociation ionization shows that the ionic fragments are themselves electronically excited.