More Like this

1. Absolute frequency measurement of the $2p^2{(}^{3}P)3s{}^{2}P–2p^2{(}^{3}P)3p{}^2{D}^o$ transitions in neutral ${}^{14}\mathrm{N}$

   https://doi.org/10.1103/PhysRevA.108.042815  

   Ahrendsen, K J; Maruko, C; Albert-Aranovich, K R; Berfield-Brewer, Q; Esseln, A; Guo, L; Ishimwe, A E; Kuzniar, Y; McKenna, A E; Villarreal, K_J Soto; et al (October 2023, Physical Review A)

   We report absolute frequency measurements on the three excited-state transitions connecting the 2p2 (3P)3s 2P1/2,3/2 and 2p2 (3P)3p 2D◦ 3/2,5/2 states in neutral 14N using saturated absorption spectroscopy in a glass cell filled with a mixture of nitrogen and argon gas and driven with a radio-frequency electric field. The absolute transition frequencies are found to be 319 288 834(150), 319 085 445(125), and 316 795 808(140) MHz for the 1/2–3/2, 3/2–5/2, and 3/2–3/2 transitions, respectively. This work represents the saturated absorption measurements for these transitions. These results are approximately a factor of 5 improvement over previous results, despite being conservative estimates. We found that the overlapping hyperfine structure prevented fitting individual spectral features, presenting difficulties for possible future tests of quantum electrodynamics in seven-electron systems. A better understanding of the amplitude behavior of a merged hyperfine structure will allow the extrapolation of the center of gravity frequencies for these transitions to sub-MHz precision using our collected data. 

   more » « less
2. High-precision measurement and ab initio calculation of the $\left(6s^{2}6p^2\right) {}^3{P}_0{\to }^3{P}_2$ electric-quadrupole-transition amplitude in ${}^{208}\mathrm{Pb}$

   https://doi.org/10.1103/PhysRevA.100.052506  

   Maser, Daniel L.; Hoenig, Eli; Wang, B.-Y.; Rupasinghe, P. M.; Porsev, S. G.; Safronova, M. S.; Majumder, P. K. (November 2019, Physical Review A)
3. ${}^{28}\mathrm{Al}$ half-life measurement and the negative mirror asymmetry between the ${}^{28}\mathrm{Al}\left({\beta }^{-}\right){}^{28m}\mathrm{Si}$ and ${}^{28}\mathrm{P}\left({\beta }^{+}\right){}^{28m}\mathrm{Si}$ decays

   https://doi.org/10.1103/wyxw-hbgd  

   Liu, B; Brodeur, M; Bardayan, D W; Becchetti, F D; Boomershine, C; Burdette, D P; Caves, L; Olivas-Gomez, O; Henderson, S L; Kolata, J J; et al (October 2025, Physical Review C)
4. $K^{*}{\left(892\right)}^0$ and $\varphi \left(1020\right)$ production at midrapidity in $pp$ collisions at $\sqrt{s}=8$ TeV

   https://doi.org/10.1103/PhysRevC.102.024912  

   Acharya, S.; Adamová, D.; Adhya, S. P.; Adler, A.; Adolfsson, J.; Aggarwal, M. M.; Aglieri Rinella, G.; Agnello, M.; Agrawal, N.; Ahammed, Z.; et al (August 2020, Physical Review C)

   null (Ed.)
5. Electron-impact excitation of the ( $5s^{2}5p$ ) ${}^{2}P_{1/2}\to (5s^{2}6s$ ) ${}^{2}S_{1/2}$ transition in indium: Theory and experiment

   https://doi.org/10.1103/PhysRevA.102.022801  

   Hamilton, K. R.; Zatsarinny, O.; Bartschat, K.; Rabasović, M. S.; Šević, D.; Marinković, B. P.; Dujko, S.; Atić, J.; Fursa, D. V.; Bray, I.; et al (August 2020, Physical Review A)

   null (Ed.)