Precision test of the isobaric multiplet mass equation for the A=32, T=2 quintet Academic Article uri icon


  • Masses of the radionuclides Si32,33 and P34 and of the stable nuclides S32 and P31 have been measured with the Low Energy Beam and Ion Trap (LEBIT) Penning trap mass spectrometer. Relative mass uncertainties as low as 310-9 have been achieved. The measured mass value of Si32 differs from the literature value by four standard deviations. The precise mass determination of Si32 and S32 have been employed to test the validity of the quadratic form of the isobaric multiplet mass equation (IMME) for the most well known A=32, T=2 isospin quintet. The new experimental results indicate a dramatic breakdown of the model. 2009 The American Physical Society.

published proceedings


author list (cited authors)

  • Kwiatkowski, A. A., Barquest, B. R., Bollen, G., Campbell, C. M., Lincoln, D. L., Morrissey, D. J., ... Block, M.

citation count

  • 43

complete list of authors

  • Kwiatkowski, AA||Barquest, BR||Bollen, G||Campbell, CM||Lincoln, DL||Morrissey, DJ||Pang, GK||Prinke, AM||Savory, J||Schwarz, S||Folden, CMIII||Melconian, D||Sjue, SKL||Block, M

publication date

  • November 2009