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BASE-high-precision comparisons of the fundamental properties of protons and antiprotons.
Latacz BM, Arndt BP, Bauer BB, Devlin JA, Erlewein SR, Fleck M, Jäger JI, Schiffelholz M, Umbrazunas G, Wursten EJ, Abbass F, Micke P, Popper D, Wiesinger M, Will C, Yildiz H, Blaum K, Matsuda Y, Mooser A, Ospelkaus C, Quint W, Soter A, Walz J, Yamazaki Y, Smorra C, Ulmer S. Latacz BM, et al. Among authors: popper d. Eur Phys J D At Mol Opt Phys. 2023;77(6):94. doi: 10.1140/epjd/s10053-023-00672-y. Epub 2023 Jun 5. Eur Phys J D At Mol Opt Phys. 2023. PMID: 37288385 Free PMC article.
Sympathetic cooling of a trapped proton mediated by an LC circuit.
Bohman M, Grunhofer V, Smorra C, Wiesinger M, Will C, Borchert MJ, Devlin JA, Erlewein S, Fleck M, Gavranovic S, Harrington J, Latacz B, Mooser A, Popper D, Wursten E, Blaum K, Matsuda Y, Ospelkaus C, Quint W, Walz J, Ulmer S; BASE Collaboration. Bohman M, et al. Among authors: popper d. Nature. 2021 Aug;596(7873):514-518. doi: 10.1038/s41586-021-03784-w. Epub 2021 Aug 25. Nature. 2021. PMID: 34433946 Free PMC article.
A 16-parts-per-trillion measurement of the antiproton-to-proton charge-mass ratio.
Borchert MJ, Devlin JA, Erlewein SR, Fleck M, Harrington JA, Higuchi T, Latacz BM, Voelksen F, Wursten EJ, Abbass F, Bohman MA, Mooser AH, Popper D, Wiesinger M, Will C, Blaum K, Matsuda Y, Ospelkaus C, Quint W, Walz J, Yamazaki Y, Smorra C, Ulmer S. Borchert MJ, et al. Among authors: popper d. Nature. 2022 Jan;601(7891):53-57. doi: 10.1038/s41586-021-04203-w. Epub 2022 Jan 5. Nature. 2022. PMID: 34987217
A high-Q superconducting toroidal medium frequency detection system with a capacitively adjustable frequency range >180 kHz.
Völksen F, Devlin JA, Borchert MJ, Erlewein SR, Fleck M, Jäger JI, Latacz BM, Micke P, Nuschke P, Umbrazunas G, Wursten EJ, Abbass F, Bohman MA, Popper D, Wiesinger M, Will C, Blaum K, Matsuda Y, Mooser A, Ospelkaus C, Smorra C, Soter A, Quint W, Walz J, Yamazaki Y, Ulmer S. Völksen F, et al. Among authors: popper d. Rev Sci Instrum. 2022 Sep 1;93(9):093303. doi: 10.1063/5.0089182. Rev Sci Instrum. 2022. PMID: 36182508