29 citations · 97 across the 9 of their papers we have counts for
9 papers
Revised He nuclear charge radius due to electronic hyperfine mixing
Xiao-Qiu Qi, Pei-Pei Zhang, Zong-Chao Yan +4
The significant discrepancy in the difference of squared nuclear charge radii of He obtained from electronic-atom or muonic-atom energy levels is a puzzle. In this p…
Direct Extraction of Nuclear Structure Information Using Precision Lithium-Ion Spectroscopy
Hua Guan, Xiao-Qiu Qi, Jian-Guo Li +14
Accurately describing nuclear interactions within atomic nuclei remains a challenge, which hinders our exploration of new physics beyond the Standard Model. However, these nuclear…
Measurement of hyperfine structure and the Zemach radius in using optical Ramsey technique
Wei Sun, Pei-Pei Zhang, Peng-peng Zhou +10
We investigate the -- () transitions in using the optical Ramsey technique and achieve the most precise values of the hyperfine spl…
Application of the correlated B-spline basis functions to the leading relativistic and QED corrections of helium
Hao Fang, Yong-Hui Zhang, Pei-Pei Zhang +1
B-spline functions have been widely used in computational atomic physics. Different from the traditional B-spline basis (a simple product of two B-splines), the recently developed…
Precision calculation of hyperfine structure of Be ions
Xiao-Qiu Qi, Pei-Pei Zhang, Zong-Chao Yan +4
The hyperfine structures of the and states of the Be and Be ions are investigated within the framework of the nonrelativistic quantu…
Ultrahigh-energy diffuse gamma-ray emission from cosmic-ray interactions with medium surrounding acceleration sources
Pei-pei Zhang, Bing-qiang Qiao, Qiang Yuan +2
The diffuse -ray spectrum at sub-PeV energy region has been measured for the first time by the Tibet-AS experiment. It will shed new light on the understanding of origin and…
Precision calculation of hyperfine structure and the Zemach radii of Li ions
Xiao-Qiu Qi, Pei-Pei Zhang, Zong-Chao Yan +7
The hyperfine structures of the states of the Li and Li ions are investigated theoretically to extract the Zemach radii of the Li and Li nuclei…
QED and relativistic nuclear recoil corrections to the 413 nm tune-out wavelength for the state of helium
Yong-Hui Zhang, Fang-Fei Wu, Pei-Pei Zhang +4
Comparison of high accuracy calculations with precision measurement of the 413 nm tune-out wavelength of the He() state provides a unique test of quantum electro-dynamic…
Precision spectroscopy of the hydrogen molecular ions HD
Zhen-Xiang Zhong, Pei-pei Zhang, Zong-Chao Yan +1
Expectation values of the Breit operators and the terms are calculated for HD with the vibrational number and the total angular momentum . Relativistic and r…