Q value of the superallowed decay of Mg22 and the calibration of the Na21(p,γ) experiment

26 October 2004

journal article
research article
Published by American Physical Society (APS) in Physical Review C

Vol. 70 (4) , 042501
https://doi.org/10.1103/physrevc.70.042501

Abstract

The masses of the radioactive nuclei and have been measured with the Canadian Penning trap on-line mass spectrometer to a precision of and , respectively. A value of for the superallowed decay of is obtained from the difference of these two masses. With this precise value, the value for this decay is determined with improved precision and is found to be consistent with the existing precision data set of superallowed Fermi emitters. This provides an important test of the isospin symmetry-breaking corrections. If the mass of determined here is used in the calibration of a recent measurement, part of the discrepancy observed in that measurement is removed.

Keywords

This publication has 13 references indexed in Scilit:

Review of Particle Physics
Physics Letters B, 2004
High Statistics Measurement of the $K^{+} \to π^{0} e^{+} ν$ ( $K_{e 3}^{+}$ ) Branching Ratio
Physical Review Letters, 2003
The Ame2003 atomic mass evaluation
Nuclear Physics A, 2003
High Precision Measurement of the Superallowed $0^{+} \to 0^{+} β$ Decay of ${}^{22}{M g}$
Physical Review Letters, 2003
Development and operation of gas catchers to thermalize fusion–evaporation and fragmentation products
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2003
Improvements in the injection system of the Canadian Penning trap mass spectrometer
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2002
Calculated corrections to superallowed Fermi $β$ decay: New evaluation of the nuclear-structure-dependent terms
Physical Review C, 2002
The Canadian Penning trap mass spectrometer
Nuclear Physics A, 1997
A new cooling technique for heavy ions in a Penning trap
Physics Letters A, 1991
The accuracy of heavy-ion mass measurements using time of flight-ion cyclotron resonance in a Penning trap
Journal of Applied Physics, 1990