Zobrazeno 1 - 10
of 195
pro vyhledávání: '"Drake, G W F"'
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
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
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:
Henson, B. M., Ross, J. A., Thomas, K. F., Kuhn, C. N., Shin, D. K., Hodgman, S. S., Zhang, Yong-Hui, Tang, Li-Yan, Drake, G. W. F., Bondy, A. T., Truscott, A. G., Baldwin, K. G. H.
Publikováno v:
Science 376 (2022) 199-203
Despite quantum electrodynamics (QED) being one of the most stringently tested theories underpinning modern physics, recent precision atomic spectroscopy measurements have uncovered several small discrepancies between experiment and theory. One parti
Externí odkaz:
http://arxiv.org/abs/2107.00149
Autor:
Qi, Xiao-Qiu, Zhang, Pei-Pei, Yan, Zong-Chao, Drake, G. W. F., Zhong, Zhen-Xiang, Shi, Ting-Yun, Chen, Shao-Long, Huang, Yao, Guan, Hua, Gao, Ke-Lin
Publikováno v:
Phys. Rev. Lett. 125, 183002 (2020)
The hyperfine structures of the $2\,^3\!S_1$ states of the $^6$Li$^+$ and $^7$Li$^+$ ions are investigated theoretically to extract the Zemach radii of the $^6$Li and $^7$Li nuclei by comparing with precision measurements. The obtained Zemach radii a
Externí odkaz:
http://arxiv.org/abs/2009.03114
Akademický článek
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Akademický článek
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Autor:
Chung, H. -K., Braams, B. J., Bartschat, K., Csaszar, A. G., Drake, G. W. F., Kirchner, T., Kokoouline, V., Tennyson, J.
Publikováno v:
J. Phys. D: Appl. Phys. 49 (2016) 36300 (Topical Review)
Sources of uncertainty are reviewed for calculated atomic and molecular data that are important for plasma modeling: atomic and molecular structure and cross sections for electron-atom, electron-molecule, and heavy particle collisions. We concentrate
Externí odkaz:
http://arxiv.org/abs/1603.05923
Autor:
Lu, Z. -T., Mueller, P., Drake, G. W. F., Noertershaeuser, W., Pieper, Steven C., Yan, Z. -C.
The neutron-rich 6He and 8He isotopes exhibit an exotic nuclear structure that consists of a tightly bound 4He-like core with additional neutrons orbiting at a relatively large distance, forming a halo. Recent experimental efforts have succeeded in l
Externí odkaz:
http://arxiv.org/abs/1307.2872
Autor:
Daneshvar, Hoofar, Drake, G. W. F.
We consider a spin-boson Hamiltonian which is generalized such that the Hamiltonians for the system ($\hat{H}_{\cal S}$) and the interaction with the environment ($\hat{H}_{\rm int}$) do not commute with each other. Considering a single-mode quantize
Externí odkaz:
http://arxiv.org/abs/1110.0072