Elsevier

Nuclear Physics

Volume 85, Issue 1, September 1966, Pages 227-240
Nuclear Physics

The decay of 164Ho

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Abstract

164Ho activity is produced by bombarding natural holmium with 14 MeV neutrons. Two beta groups of 875±20 and 965±20 keV are measured using a lithium drifted silicon detector. Photons of 36, 46, 51, 72 and 90 keV are found and the decay of each is followed with a scintillation spectrometer. The β-γ, γ-γ and x-γ coincidence experiments are performed. A metastable state is found in 164Ho. The half-lives of the metastable and ground states of 164Ho are found to be 39.0±0.5 and 23.9±0.5 min, respectively. The cross sections for the production of the two states by the (n, 2n) reaction at 14 MeV neutron energy are estimated to be 1050±100 and 730±100 mb, respectively. The 51 and 36 keV gamma rays belong to the decay of 164mHo.

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