Abstract
The 4π-β-γ coincidence calibration is normally used only for nuclides with decay schemes which are both reasonably well known and fairly simple. In this paper it is shown that by a systematic variation of the “mean” β-efficiency a m (the ratio of the coincidence to the γ-counts) the error caused by the self-absorption of the β-rays can (in 4β-π counting) be eliminated by an extrapolation method. This is possible even for very complex and uncertain decay schemes, provided that at least one β-γ cascade is known. The results of a calibration of a solution of Ce 144 + Pr 144 are reported as an example.
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More From: The International Journal of Applied Radiation and Isotopes
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