citizen science 1configuration interaction 1coronal brightness 1coupled cluster 1fine-structure constant variation 1hyperfine structure 1MHD modeling 1optical clocks 1precision measurement 1radial velocity 1solar corona 1total solar eclipse 1
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physics.atom-ph2026★ 8 cited
Pr10+ as a candidate for a high-accuracy optical clock for tests of fundamental physics
S. G. Porsev, C. Cheung, M. S. Safronova +4
The authors propose the In-like ion Pr10+ as a high‑accuracy optical clock candidate with strong sensitivity to variations of the fine‑structure constant, and they compute its low‑…
physics.atom-ph2026
Precision Spectroscopy of 2S-nS Transitions in Atomic Hydrogen: A Determination of the Proton Charge Radius
R. G. Bullis, W. L. Tavis, M. R. Weiss +4
We present absolute frequency measurements of 2S_{1/2}-nS_{1/2} two-photon transitions with n = 8, 9, and 10 in a cryogenic beam of atomic hydrogen. Each transition has been measur…