24-29 June 2018
LNGS
Europe/Rome timezone

Mass measurements of short-lived nuclides in CSRe and its impact on some issues in nuclear astrophysics

28 Jun 2018, 14:45
30m
"E. Fermi" conference room (LNGS)

"E. Fermi" conference room

LNGS

Via G. Acitelli, 22 - 67100 Assergi (Italy)

Speaker

Yu Hu Zhang (Institute of Modern Physics, CAS)

Description

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 36 Ar, 58 Ni, 78 Kr, 86 Kr, and 112Sn projectiles. Masses of short-lived nuclides of on both sides of the stability valley were measured[1–10]. Relative mass precision of down to 106 ∼ 107 is routinely achieved and some issues in nuclear structure and nuclear astrophysics have been addressed. In this talk, the experimental details are presented and the progress and some typical results are briefly introduced. The impacts of mass values on the reaction paths in rp- and ν p-process of nucleosynthesis in the stellar environments are discussed. References [1] X. L. Tu et al., Phys. Rev. Lett. 106 (2011) 112501 [2] X. L. Tu et al., Nucl. Instrum. Meth. A 654 (2011) 213 [3] Y. H. Zhang et al., Phys. Rev. Lett. 109 (2012) 102501 [4] X. L. Yan et al., Astrophys. Jour. Lett. 766 (2013) L8 [5] P. Shuai et al., Phys. Lett. B 735 (2014) 327 [6] X. Xu et al., Chin. Phys. C 39 (2015) 104001 [7] X. Xu et al., Phys. Rev. Lett. 117 (2016) 182503 [8] P. Zhang et al., Phys. Lett. B 767 (2017) 20 [9] Q. Zeng et al., Phys. Rev. C 96 (2017) 031303(R) [10] Y. M. Xing et al., Phys. Lett. B 781 (2018) 358

Primary author

Yu Hu Zhang (Institute of Modern Physics, CAS)

Presentation Materials