Zobrazeno 1 - 5 of 5 pro vyhledávání: '"Michael Hammen"'
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Akademický článek
High precision hyperfine measurements in Bismuth challenge bound-state strong-field QED
Autor: Johannes Ullmann, Zoran Andelkovic, Carsten Brandau, Andreas Dax, Wolfgang Geithner, Christopher Geppert, Christian Gorges, Michael Hammen, Volker Hannen, Simon Kaufmann, Kristian König, Yuri A. Litvinov, Matthias Lochmann, Bernhard Maaß, Johann Meisner, Tobias Murböck, Rodolfo Sánchez, Matthias Schmidt, Stefan Schmidt, Markus Steck, Thomas Stöhlker, Richard C. Thompson, Christian Trageser, Jonas Vollbrecht, Christian Weinheimer, Wilfried Nörtershäuser
Publikováno v: Nature Communications, Vol 8, Iss 1, Pp 1-7 (2017)
Precision measurements provide a sensitive test of fundamental constants and their uncertainties. Here the authors precisely measure the hyperfine structure splitting in bismuth ions, and report significant discrepancy with the theoretical prediction
Externí odkaz: https://doaj.org/article/af36d1e2f6aa4742bd787a0a1e163217
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2
Precision Test of Many-Body QED in the Be+ 2p Fine Structure Doublet Using Short-Lived Isotopes
Autor: Wilfried, Nörtershäuser, Christopher, Geppert, Andreas, Krieger, Krzysztof, Pachucki, Mariusz, Puchalski, Klaus, Blaum, Mark L, Bissell, Nadja, Frömmgen, Michael, Hammen, Magdalena, Kowalska, Jörg, Krämer, Kim, Kreim, Rainer, Neugart, Gerda, Neyens, Rodolfo, Sánchez, Deyan T, Yordanov
Publikováno v: Physical review letters. 115(3)
Absolute transition frequencies of the 2s 2S{1/2}→2p2P{1/2,3/2} transitions in Be^{+} were measured for the isotopes ^{7,9-12}Be. The fine structure splitting of the 2p state and its isotope dependence are extracted and compared to results of ab in
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::fa4a3c50ccef3679d9657a6af7d7fb3d
https://pubmed.ncbi.nlm.nih.gov/26230786
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