First isochronous mass measurements with two time-of-flight detectors at CSRe

Xing, Y.M.; Wang, M.; Zhang, Y.H.; Shuai, P.; Xu, X.; Chen, R.J.; Yan, X.L.; Tu, X. L.; Zhang, W.; Fu, C.Y; Xu, H.S.; Litvinov, Yuri A.; Blaum, Klaus; Chen, X.C.; Ge, Z.; Gao, B. S.; Huang, W.J.; Litvinov, S.A.; Liu, D.W.; Ma, X.W.; Mao, R.S.; Xiao, G.Q.; Yang, J.C.; Yuan, Y.J.; Zeng, Q.; Zhou, X.H.

doi:10.1088/0031-8949/2015/T166/014010

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First isochronous mass measurements with two time-of-flight detectors at CSRe

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Tu, X. L.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Litvinov, Yuri A.
Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences;
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
GSI Helmholtz Centre for Heavy Ion Research;

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Blaum, Klaus
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Gao, B. S.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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http://dx.doi.org/10.1088/0031-8949/2015/T166/014010
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Citation

Xing, Y., Wang, M., Zhang, Y., Shuai, P., Xu, X., Chen, R., et al. (2015). First isochronous mass measurements with two time-of-flight detectors at CSRe. Physica Scripta T, 2015(T166): 014010. doi:10.1088/0031-8949/2015/T166/014010.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0029-310C-D

Abstract

Isochronous mass spectrometry (IMS) established in heavy-ion storage rings has proven to be a powerful tool for mass measurements of short-lived nuclides. In IMS, the revolution times of stored ions should be independent of their velocity spread. However, this isochronous condition is fulfilled only in the first order and in a small range of revolution times. To correct for non-isochronicity, an additional measure of the velocity or magnetic rigidity of each stored ion is required. For this purpose two new time-of-flight (TOF) detectors were installed in one of the straight sections of the experimental cooler storage ring in Lanzhou. It is expected that the resolving power of the IMS will significantly be improved with such a double-TOF arrangement. The double-TOF system was tested in a recent experiment with the ⁷⁸Kr fragments. Some of the experimental results are presented in this contribution.