Abstract
Multiple-reflection time-of-flight mass spectrometers (MR-TOF-MS) have been demonstrated to have a mass resolving power in the range of few hundreds of thousand. The TITAN MR-TOF-MS has been used to separate isobaric impurities and measure masses of many rare isotopes. Recently we have measured the mass and half-lives of neutron-rich Rubidium isotopes with the MR-TOF-MS. This technique is capable of measuring the half-life of rare isotopes in the range of few tens of millisecond. In this proceeding, we present the measurement of half-life of 100Rb that was found to be 50±5 ms, in good agreement with literature value of 48±3 ms.
Highlights
Measuring atomic masses precisely is challenging and ion traps have played a crucial role therein [1]
In comparison to the Penning trap, MR-TOF-MS can provide a quick broadband spectrum which is useful for separating several isobars in a single run, but at the cost of precision
As part of a mass-measurement campaign of neutron-rich Rb and Sr isotopes, we have measured the half-life of 100Rb using the TITAN MR-TOF-MS
Summary
Measuring atomic masses precisely is challenging and ion traps have played a crucial role therein [1]. A half-life measurement is possible by employing an ion trap for decay of mother nuclei and subsequent mass measurement inside a Penning trap mass spectrometer (PTMS) or an MRTOF-MS [8]. As part of a mass-measurement campaign of neutron-rich Rb and Sr isotopes, we have measured the half-life of 100Rb using the TITAN MR-TOF-MS. The measurement relies on counting the mother as a function of the storage time in a buffer-gas-filled trap and requires identification of the radioactive species in the analyzer section.
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