PT Journal AU Sikorsky, T Geist, J Hengstler, D Kempf, S Gastaldo, L Enss, C Mokry, C Runke, J Dullmann, CE Wobrauschek, P Beeks, K Rosecker, V Sterba, JH Kazakov, G Schumm, T Fleischmann, A TI Measurement of the Th 229 Isomer Energy with a Magnetic Microcalorimeter SO Physical review letters PY 2020 BP Art.Nr.: EP 142503 VL 125 IS 14 DI 10.1103/PhysRevLett.125.142503 LA english ER