Rostock 2019 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 8: Precision Mass Spectrometry
MS 8.2: Vortrag
Donnerstag, 14. März 2019, 11:00–11:15, U A-Esch 2
Improved ion thermalization and preparation with the cryogenic buffer-gas stopping cell of SHIPTRAP — •Francesca Giacoppo1,2, Brankica Andelić1,3, Klaus Blaum4, Michael Block1,2,5, Premaditya Chhetri6, Christian Droese7, Christoph E. Düllmann1,2,5, Martin Eibach2,7, Julia Even3, Stephan Götz1,2,5, Nasser Kalantar-Nayestanaki3, Oliver Kaleja2,4,5, Mustapha Laatiaoui1,2,5, Andrew K. Mistry1,2, Enrique Minaya Ramirez8, Tobias Murböck1,2, Sebastian Raeder1,2, Lutz Schweikhard7, and Peter G. Thirolf9 — 1HIM Mainz — 2GSI Darmstadt — 3KVI-CART, RU Groningen — 4MPIK Heidelberg — 5JGU Mainz — 6TU Darmstadt — 7Univ. Greifswald — 8IPN Orsay — 9LMU München
During summer 2018 direct mass measurements of very heavy elements such as 251No (Z=102), 254Lr (Z=103) as well as the first superheavy element 257Rf (Z=104) have been successfully achieved, for the first time, with the SHIPTRAP mass spectrometer. Such challenging experiments face the problem of very low production rates, down to few ions per hour(s) and demand a very efficient ion preparation and manipulation. In particular the ion thermalization after production and prior to transfer to the Penning traps is the most crucial step. The latter is achieved slowing down the ions into a buffer-gas stopping cell. In this talk the latest optimization of the recently implemented SHIPTRAP cryogenic buffer-gas stopping cell and its enhanced performance in term of efficiency and purity will be presented.