Hannover 2020 – wissenschaftliches Programm
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MS 1.5: Vortrag
Montag, 9. März 2020, 12:15–12:30, f128
Development of an electronic detectionmethod for FT-ICR-MS — •Sven Böhland1, Steffen Lohse1, 2, Michael Block1, 2, 3, Joaquín Berrocal4, Gabriel Ramirez5, and Daniel Rodríguez4 — 1JGU, Mainz — 2HI Mainz — 3GSI, Darmstadt — 4Universidad de Granada — 5Seven Solutions S.L., Granada
The existance of superheavy elements (Z ≥ 104) stems from an enhanced stability as a result of nuclear shell effects. High-precision Penning trap mass spectrometry provides the nuclear binding energies of these elements. This will help constraining theoretical predictions of nuclear models, and in particular for the so-called Island of Stability, a region of relatively long-lived nuclides expected around Z = 114 – 126 and N = 184. Production rates for superheavy elements are exceptionally low, which requires the highest level of efficency and sensitivity. In recent years the cutting edge technique for mass spectrometry on single ions is the Fourier-Transform Ion-Cyclotron-Resonance method (FT-ICR). The outstanding performance has been shown in several experiments, pushing the border of precision beyond 10-10 for single ions of select stable nuclides. All these experiments have relied on a LC tank circuit formed by the capacity of the Penning trap electrode connected to a superconducting coil and only very recently, a novel quartz amplifier has been built and used for the first time with stored 40Ca+-ions. Following the first tests, the amplifier has been characterized using the heavier 207Pb+-ions. The results pave the way to measurements on super heavy elements.