Predicting quasibound states of negative ions: La− as a test case
Predicting quasibound states of negative ions: La− as a test case
复制标题
DOI：
10.1103/physreva.103.022819
复制
发表时间：
2021-02
影响因子：
2.9
通讯作者：
M. Safronova;C. Cheung;M. Kozlov;Sarah E. Spielman;N. D. Gibson;C. Walter
中科院分区：
文献类型：
--
作者：
M. Safronova;C. Cheung;M. Kozlov;Sarah E. Spielman;N. D. Gibson;C. Walter
我们证明了一个负离子的quasibound光谱的准确预测，使用高精度的理论方法。我们使用${\marthm {La}}^{\ensuremath{-}}$作为测试案例，因为最近的一项实验测量了其光剥离光谱中归因于准束缚态跃迁的11个共振的能量[Phys. Rev. A 102，042812（2020）]。我们确定了所有观察到的共振，并预测了一个刚刚超出先前实验范围的峰。根据理论预测，在预测波长处观察到峰，验证了鉴别。同样的方法也适用于广泛的负离子。
We demonstrated the accurate prediction of a quasibound spectrum of a negative ion using a high-precision theoretical approach. We used ${\mathrm{La}}^{\ensuremath{-}}$ as a test case due to a recent experiment that measured energies of 11 resonances in its photodetachment spectrum attributed to transitions to quasibound states [Phys. Rev. A 102, 042812 (2020)]. We identified all of the observed resonances and predicted one more peak just outside the range of the prior experiment. Following the theoretical prediction, the peak was observed at the predicted wavelength, validating the identification. The same approach is applicable to a wide range of negative ions.