Precision Mass Measurements of Short-lived Nuclides at the Heavy-ion Storage Ring in Lanzhou |
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Authors: | ZHANG Yuhu WANG Meng Yu A Litvinov XU Hushan |
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Institution: | 1.Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science,Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;2.GSI Helmholtzzentrum fur Schwerionenforschung, Planckstrae 1, Darmstadt 64291, Germany |
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Abstract: | Recent commissioning of the Cooler Storage Ring at the Heavy Ion Research Facility in Lanzhou enabled us to conduct high-precision mass measurements at the Institute of Modern Physics in Lanzhou (IMP). In the past few years, mass measurements were performed using the CSRe-based isochronous mass spectrometry employing the fragmentation of the energetic beams of 58Ni, 78Kr, 86Kr, and 112Sn projectiles. Masses of short-lived nuclides on both sides of the stability valley were addressed. Relative mass precision of down to 10−6 ~ 10−7 is routinely achieved. The mass values were used as an input for dedicated nuclear structure and astrophysics studies, providing for instance new insights into the rp-process of nucleosynthesis in X-ray bursts. In this contribution, we briefly review the so far conducted experiments and the main achieved results, as well as outline the plans for future experiments. |
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Keywords: | storage ring isochronous mass spectrometry binding energy isobaric multiplet mass equation X-ray burst |
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