Zobrazeno 1 - 10
of 415
pro vyhledávání: '"Zhang, Pei‐Pei"'
Autor:
Qi, Xiao-Qiu, Zhang, Pei-Pei, Yan, Zong-Chao, Tang, Li-Yan, Chen, Ai-Xi, Shi, Ting-Yun, Zhong, Zhen-Xiang
The significant discrepancy in the difference of squared nuclear charge radii $\Delta R^2$ of $^{3,4}$He obtained from electronic-atom or muonic-atom energy levels is a puzzle. In this paper, we show that the tension is resolved by including off-diag
Externí odkaz:
http://arxiv.org/abs/2409.09279
Autor:
Guan, Hua, Qi, Xiao-Qiu, Zhou, Peng-Peng, Sun, Wei, Chen, Shao-Long, Chang, Xu-Rui, Huang, Yao, Zhang, Pei-Pei, Yan, Zong-Chao, Drake, G. W. F., Chen, Ai-Xi, Zhong, Zhen-Xiang, Shi, Ting-Yun, Gao, Ke-Lin
The optical Ramsey technique is used to obtain precise measurements of the hyperfine splittings in the $2\,^3\!S_1$ and $2\,^3\!P_J$ states of $^7$Li$^+$. Together with bound-state quantum electrodynamic theory, the Zemach radius and quadrupole momen
Externí odkaz:
http://arxiv.org/abs/2403.06384
Publikováno v:
Xin-Yu He et al 2024 ApJ 964 28
Cosmic rays travel throughout the Galaxy, leaving traces from radio to ultra-high-energy gamma rays due to interactions with the interstellar gas, radiation field and magnetic field. Therefore, it is necessary to utilize multi-wavelength investigatio
Externí odkaz:
http://arxiv.org/abs/2402.13467
The observations of the energy spectra of cosmic-ray have revealed complicated structures. Especially, spectral hardenings in the boron-to-carbon and boron-to-oxygen ratios above $\sim 200$ GV has been revealed by AMS-02 and DAMPE experiments. One sc
Externí odkaz:
http://arxiv.org/abs/2307.02372
Autor:
Sun, Wei, Zhang, Pei-Pei, Zhou, Peng-peng, Chen, Shao-long, Zhou, Zhi-qiang, Huang, Yao, Qi, Xiao-Qiu, Yan, Zong-Chao, Shi, Ting-Yun, Drake, G. W. F., Zhong, Zhen-Xiang, Guan, Hua, Gao, Ke-lin
We investigate the $2\,^3\!S_1$--$2\,^3\!P_J$ ($J = 0, 1, 2$) transitions in $\rm^6Li^+$ using the optical Ramsey technique and achieve the most precise values of the hyperfine splittings of the $2\,^3\!S_1$ and $2\,^3\!P_J$ states, with smallest unc
Externí odkaz:
http://arxiv.org/abs/2303.07939
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 correlated B-spline basis functions(C-BSBF), in which the interelectro
Externí odkaz:
http://arxiv.org/abs/2301.05442
More and more experiments have identified that the energy spectra of both primary and secondary cosmic-rays exhibit a hardening above $\sim 200$ GV. Most recently, the DAMPE experiment has reported a hardening of boron-to-carbon ratio at $200$ GV. Th
Externí odkaz:
http://arxiv.org/abs/2210.09591
Autor:
Qi, Xiao-Qiu, Zhang, Pei-Pei, Yan, Zong-Chao, Shi, Ting-Yun, Drake, G. W. F., Chen, Ai-Xi, Zhong, Zhen-Xiang
The hyperfine structures of the $2\,^3\!S_1$ and $2\,^3\!P_J$ states of the $^7$Be$^{2+}$ and $^9$Be$^{2+}$ ions are investigated within the framework of the nonrelativistic quantum electrodynamics (NRQED). The uncertainties of present hyperfine spli
Externí odkaz:
http://arxiv.org/abs/2203.05159
Autor:
Duan, Zi-Wei, Liu, Yong, Zhang, Pei-Pei, Hu, Jing-Yan, Mo, Zhi-Xin, Liu, Wen-Qing, Ma, Xin, Zhou, Xiao-Hui, Wang, Xiao-Hui, Hu, Xiu-Hua, Wei, Sheng-Li
Publikováno v:
In Journal of Ethnopharmacology 15 September 2024 331
The diffuse $\gamma$-ray emission was measured up to $957$ TeV by the Tibet-AS$\gamma$ experiment recently. Assuming that it is produced by the hadronic interaction between cosmic ray nuclei and the interstellar medium, it requires that the cosmic ra
Externí odkaz:
http://arxiv.org/abs/2112.04651