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Recent liquid scintillation (LS) measurements at the National Institute of Standards and Technology (NIST) and at the Laboratoire National Henri Becquerel (LNHB) on a standardized 63 Ni solution that has been tracked for nearly 40 years have resulted in several important findings: (i) a 63 Ni half-life value of 101.2±1.5a has been determined with the present decay data. This value...
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