Single-reference high-precision mass measurement with a multi-reflection time-of-flight mass spectrograph

Abstract

A multi-reflection time-of-flight mass spectrograph, competitive with Penning trap mass spectrometers, has been built at RIKEN. We have performed a first online mass measurement, using 8Li+ (T1/2 = 838 ms). A new analysis method has been realized, with which, using only 12C+ references, the mass excess of 8Li was accurately determined to be 20947.6(15)(34) keV (dm/m = 6.6 x 10-7). The speed, precision and accuracy of this first online measurement exemplifies the potential for using this new type of mass spectrograph for precision measurements of short-lived nuclei.

arXiv comment6 pages, 4 figures

References in corpus (5)

• Identification of 45 New Neutron-Rich Isotopes Produced by In-Flight Fission of a 238U Beam at 345 MeV/nucleon
• New Result in the Production and Decay of an Isotope, 278[113], of the 113th Element
• First Penning-trap mass measurement in the millisecond half-life range: the exotic halo nucleus 11Li
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• Improving wide-band mass measurements in a multi-reflection time-of-flight mass spectrograph by usage of a concomitant measurement scheme
• New mass anchor points for neutron-deficient heavy nuclei from direct mass measurements of radium and actinium isotopes
• Toward precision mass measurements of neutron-rich nuclei relevant to $r$-process nucleosynthesis
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• Development of an "$\alpha$-ToF" detector for correlated measurement of atomic masses and decay properties
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• First high-precision direct determination of the atomic mass of a superheavy nuclide