QEC value of the superallowed β emitter 42Sc
Eronen, T., Hardy, J. C., Canete, L., Jokinen, A., Hakala, J., Kankainen, A., . . . Äystö, J. (2017). QEC value of the superallowed β emitter 42Sc. Physical Review C, 95 (2), 025501. doi:10.1103/PhysRevC.95.025501
Published inPhysical Review C
© 2017 American Physical Society. Published in this repository with the kind permission of the publisher.
The QEC value of the superallowed β+ emitter 42Sc has been measured with the JYFLTRAP Penning-trap mass spectrometer at the University of Jyvaskylä to be 6426.350(53) keV. This result is at least a factor of four more precise than all previous measurements, which were also inconsistent with one another. As a byproduct we determine the excitation energy of the 7+ isomeric state in 42Sc to be 616.762(46) keV, which deviates by 8σ from the previous measurement.