کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1192622 | 1492283 | 2013 | 5 صفحه PDF | دانلود رایگان |
For trans-uranium elements, stable atomic isobars do not exist. In order to provide isobaric reference ions for the mass measurement of trans-uranium elements, an electrospray ion source (ESI) was combined with an rf-carpet to collect molecular ions efficiently. The rf-carpet allows for simplification of the pumping system to transport ions from the ESI to a precision mass analyzer. Molecular ions appropriate for isobaric references of trans-uranium elements were extracted from the rf-carpet and analyzed by a multi-reflection time-of-flight mass spectrograph (MRTOF-MS) with a resolving power of Rm ≳ 100, 000.
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► A molecular ion source that provides mass calibrants for the multi-reflection time-of-flight mass spectrograph (MRTOF-MS).
► The MRTOF-MS will be used for mass measurements of short-lived nuclei and superheavy elements.
► The ion source differs from conventional electrospray systems by the use of an rf-carpet instead of the standard skimmer.
► The use of the rf-carpet allows efficient extraction from the ion source and simple pumping system.
► The molecular ions were analyzed by the MRTOF-MS, which could reach a mass resolving power of 100,000.
Journal: International Journal of Mass Spectrometry - Volume 337, 1 March 2013, Pages 24–28