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First application of combined isochronous and Schottky mass spectrometry: Half-lives of fully-ionized 49Cr24+ and 53Fe26+ atoms

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Tu,  X. L.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China;

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

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引用

Tu, X. L., Chen, X.-C., Zhang, J.-T., Shuai, P., Yue, K., Xu, X., Fu, C.-Y., Zeng, Q., Zhou, X., Xing, Y.-M., Wu, J.-X., Mao, R.-S., Mao, L.-J., Fang, K.-H., Sun, Z.-Y., Wang, M., Yang, J.-C., Litvinov, Y. A., Blaum, K., Zhang, Y.-H., Yuan, Y.-J., Ma, X.-W., Zhou, X.-H., & Xu, H.-S. (2018). First application of combined isochronous and Schottky mass spectrometry: Half-lives of fully-ionized 49Cr24+ and 53Fe26+ atoms. Physical Review C, 97(01):. doi:10.1103/PhysRevC.97.014321.


引用: http://hdl.handle.net/21.11116/0000-0000-6E7F-8
要旨
Lifetime measurements of β-decaying highly charged ions have been performed in the experimental storage ring (CSRe) by applying the isochronous Schottky mass spectrometry. The fully ionized 49Cr and 53Fe ions were produced in projectile fragmentation of 58Ni primary beam and were stored in the CSRe tuned into the isochronous ion-optical mode. The new resonant Schottky detector was applied to monitor the intensities of stored uncooled 49Cr24+ and 53Fe26+ ions. The extracted half-lives T1/2(49Cr24+)=44.0(27) min and T1/2 (53Fe26+)=8.47(19) min are in excellent agreement with the literature half-life values corrected for the disabled electron capture branchings. This is an important proof-of-principle step towards realizing the simultaneous mass and lifetime measurements on exotic nuclei at the future storage ring facilities.