SAMOP 2021 – scientific programme
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MS: Fachverband Massenspektrometrie
MS 1: Precision Mass Measurements I
MS 1.2: Talk
Monday, September 20, 2021, 11:15–11:30, H3
Latest results of high-precision mass measurements with Pentatrap — •Kathrin Kromer1, José Ramon Crespo López-Urrutia1, Menno Door1, Sergey Eliseev1, Pavel Filianin1, Jost Herkenhoff1,3, Wenjia Huang4, Daniel Lange1,3, Yuri Novikov2, Alexander Rischka1, Rima Xenia Schüssler1, Christoph Schweiger1, Sven Sturm1, Stefan Ulmer5, and Klaus Blaum1 — 1Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany — 2Petersburg Nuclear Physics Institute, Gatchina, Russia — 3Ruprecht-Karls-Universität Heidelberg, 69117 Heidelberg — 4Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China — 5Ulmer Fundamental Symmetries Laboratory, RIKEN, Wako, Saitama 351-0198, Japan
The high-precision Penning-trap mass spectrometer Pentatrap[1] features a stack of five Penning traps and determines mass-ratios with a relative uncertainty below 10−11. Mass-ratio determinations of stable and long-lived highly charged ions have numerous applications, among others, in neutrino physics [2] and the search of possible clock transitions in highly charged ions (HCI)[3]. The unique features of Pentatrap include access to HCI, a stablilized 7 T magnet, and a cryogenic detection system with single ion phase sensitivity. This is achieved by Fourier Transform Ion Cyclotron Resonance (FT-ICR) detection of the image-current induced in the trap electrodes. The latest measurements include the Q value of the β-decay of 163Ho with a relative uncertainty of below 7· 10−12 and the mass of 208Pb. In lead a long-lived metastable electronic state was discovered.
[1] J. Repp, et al., Appl. Phys. B 107 (2012) 983
[2] J. Gastaldo, et al., Appl. Phys. B 226 (2017) 1623
[3] M.G. Kozlov, et al., Rev. Mod. Phys. 90 (2018)