Precision isochronous mass measurements at the storage ring CSRe in Lanzhou

Tu, X.L.; Wang, M.; Litvinov, Yuri A.; Zhang, Y.H.; Xu, H.S.; Sun, Z.Y.; Audi, G.; Blaum, K.; Du, C.M.; Huang, W.X.; Hu, Z.G.; Geng, P.; Jin, S.L.; Liu, L.X.; Liu, Y.; Mei, B.; Mao, R.S.; Ma, X.W.; Suzuki, H.; Shuai, P.; Sun, Y.; Tang, S.W.; Wang, J.S.; Wang, S.T.; Xiao, G.Q.; Xu, X.; Xia, J.W.; Yang, J.C.; Ye, R.P.; Yamaguchi, T.; Yan, X.L.; Yuan, Y.J.; Yamaguchi, Y.; Zang, Y.D.; Zhao, H.W.; Zhao, T.C.; Zhang, X.Y.; Zhou, X.H.; Zhan, W.L.

doi:10.1016/j.nima.2011.07.018

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Precision isochronous mass measurements at the storage ring CSRe in Lanzhou

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Litvinov, Yuri A.
Institute of Modern Physics, Chinese Academy of Sciences;
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
GSI Helmholtzzentrum für Schwerionenforschung;

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

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http://www.sciencedirect.com/science/article/pii/S0168900211014471
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Citation

Tu, X., Wang, M., Litvinov, Y. A., Zhang, Y., Xu, H., Sun, Z., et al. (2011). Precision isochronous mass measurements at the storage ring CSRe in Lanzhou. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 654(1), 213-218. doi:10.1016/j.nima.2011.07.018.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0012-1C8A-3

Abstract

Direct mass measurements of ⁷⁸Kr projectile fragments have been performed in the recently commissioned storage ring CSRe employing the isochronous mass spectrometry method. A new data-analysis technique has been developed to correct the drifts in the revolution frequencies caused by instabilities of the magnetic fields in the CSRe, thus yielding a mass resolving power of R=m/Δm≈1.7×10⁵ (sigma). Masses for ⁴⁵V, ⁴⁷Cr, ⁴⁹Mn and ⁵¹Fe nuclei are determined with a relative mass precision of δm/m≈2×10⁻⁷ (sigma) which is an improvement by a factor of ∼2 compared to the literature values.