Accelerator mass spectrometry for tests of the Pauli exclusion principle and for detection of beta beta decay products
1991
Three experiments with accelerator mass spectrometry (AMS) are described. (1) The cross section of the reaction 60N(n,2n)59Ni with 14.8 MeV neutrons was measured with AMS to be 410+or-100 mb in agreement with the predictions of calculations. On the basis of a radioactivity measurement of 59Ni performed for the same reaction by another group, a half-life of 290000+or-100000 y was deduced for 59Ni. (2) Tests of the Pauli exclusion principle were performed by looking for non-Paulian atoms with three electrons in the K shell and for non-Paulian nuclei with three protons or three neutrons in the nuclear 1 s1/2 shell.
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