Bρ-defined isochronous mass spectrometry: An approach for high-precision mass measurements of short-lived nuclei

被引:21
|
作者
Wang, M. [1 ,2 ]
Zhang, M. [1 ,2 ]
Zhou, X. [1 ,2 ]
Zhang, Y. H. [1 ,2 ]
Litvinov, Yu. A. [1 ,3 ]
Xu, H. S. [1 ,2 ]
Chen, R. J. [1 ,3 ]
Deng, H. Y. [1 ,2 ]
Fu, C. Y. [1 ]
Ge, W. W. [1 ]
Li, H. F. [1 ,2 ]
Liao, T. [1 ,2 ]
Litvinov, S. A. [1 ,3 ]
Shuai, P. [1 ]
Shi, J. Y. [1 ,2 ]
Si, M. [1 ,2 ]
Sidhu, R. S. [3 ]
Song, Y. N. [1 ,2 ]
Sun, M. Z. [1 ]
Suzuki, S. [1 ]
Wang, Q. [1 ,2 ]
Xing, Y. M. [1 ]
Xu, X. [1 ]
Yamaguchi, T. [4 ]
Yan, X. L. [1 ]
Yang, J. C. [1 ,2 ]
Yuan, Y. J. [1 ,2 ]
Zeng, Q. [5 ]
Zhou, X. H. [1 ,2 ]
机构
[1] Chinese Acad Sci, Inst Modern Phys, CAS Key Lab High Precis Nucl Spect, Lanzhou 730000, Peoples R China
[2] Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China
[3] GSI Helmholtzzentrum Schwerionenforsch, Planckstr 1, D-64291 Darmstadt, Germany
[4] Saitama Univ, Dept Phys, Saitama 3388570, Japan
[5] East China Univ Technol, Sch Nucl Sci & Engn, Nanchang 330013, Peoples R China
基金
国家重点研发计划; 欧洲研究理事会;
关键词
CR STORAGE-RING; EXOTIC NUCLEI; PROJECT; IONS;
D O I
10.1103/PhysRevC.106.L051301
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
A technique for broadband high-precision mass measurements of short-lived exotic nuclides is reported. It is based on the isochronous mass spectrometry (IMS) and realizes simultaneous determinations of revolution time and velocity of short-lived stored ions at the cooler storage ring CSRe in Lanzhou. The technique, named the B rho-defined IMS or B rho-IMS, boosts the efficiency, sensitivity, and accuracy of mass measurements, and is applied here to measure masses of neutron-deficient fp-shell nuclides. In a single accelerator setting, masses of 46Cr, 50Fe, and 54Ni are determined with relative uncertainties of (5-6)x10-8, thereby improving the input data for testing the unitarity of the Cabibbo-Kobayashi-Maskawa quark mixing matrix. This is the technique of choice for future high-precision measurements of the most rarely produced shortest-lived nuclides.
引用
收藏
页数:7
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