Hannover 2013 – wissenschaftliches Programm

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MS: Fachverband Massenspektrometrie

MS 6: Ion Storage Rings and Precision Mass Spectrometry

MS 6.1: Hauptvortrag

Mittwoch, 20. März 2013, 11:00–11:30, F 442

Recent results in mass measurements of short-lived nuclides at CSRe-Lanzhou — •Yuhu Zhang¹, Hushan Xu¹, and Yuri Litvinov^2,1 — ¹IMP, Lanzhou, China — ²GSI, Germany

Nuclear mass is the fundamental property of a nucleus. The complex interplay of strong, weak and electromagnetic interactions in the nucleus contributes to the difference between its mass and the sum of the masses of its constituent nucleons. Precise and systematic measurements of nuclear masses not only provide information on nuclear structure, but also find their important applications in nuclear astrophysics. Recent commissioning of the Cooler Storage Ring at the Heavy Ion Research Facility in Lanzhou (HIRFL-CSR) has allowed us for direct mass measurements at the Institute of Modern Physics in Lanzhou (IMP), Chinese Academy of Sciences. In the past few years, a series of mass measurement experiments have been carried out using the CSRe-based isochronous mass spectrometry. Masses of short-lived neutron-deficient nuclides have been measured via fragmentation of the energetic beams of ⁷⁸Kr, ⁵⁸Ni. The implications of these results with respect to nuclear structures and nucleosynthesis in the rp-process of x-ray bursts are discussed.