ISOLTRAP's multi-reflection time-of-flight mass separator/spectrometer

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• 作者：R.N. Wolf ; F. Wienholtz ; D. Atanasov ; D. Beck ; K. Blaum ; Ch. Borgmann ; F. Herfurth ; M. Kowalska ; S. Kreim ; Yu. A. Litvinov ; D. Lunney ; V. Manea ; D. Neidherr ; M. Rosenbusch ; L. Schweikhard ; J. Stanja ; K. Zuber
• 关键词：MR-ToF mass separator ; Isobar purification ; Radioactive ion beam ; ISOLTRAP ; Penning trap mass spectrometer ; Mass of 137Eu nuclide
• 刊名：International Journal of Mass Spectrometry
• 出版年：2013
• 出版时间：1 September, 2013
• 年：2013
• 卷：349-350
• 期：Complete
• 页码：123-133
• 全文大小：2758 K

文摘

The online precision mass spectrometer ISOLTRAP at ISOLDE/CERN was recently upgraded by adding a multi-reflection time-of-flight mass separator/spectrometer (MR-ToF MS) between the linear radio-frequency ion trap and the two Penning traps already in place. As a mass separator, the MR-ToF device has improved significantly ISOLTRAP's capability of purification of contaminated ion beams. In addition, the MR-ToF MS can be operated as a mass spectrometer, either to analyze the ISOLDE ion beam or for precision mass measurements of nuclides that are shorter-lived or that have lower yields than those accessible for Penning-trap mass spectrometry. The MR-ToF MS and corresponding components, its integration into ISOLTRAP, and its various operation modes are reviewed. Furthermore, a precision measurement of the ¹³⁷Eu mass is presented, determined with the help of the MR-ToF device as a mass separator.