Henry C. Griffin
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Activity determination by gamma-ray spectrometry is a valuable aid which is widely used where radioactive sources are applied. For the construction of an efficiency curve vs. energy in a standard… Expand
Solvent extraction was used to prepare pure solutions of (237)Np and (233)Pa. Portions were used for liquid scintillation counting (disintegration rates) and gamma-ray spectroscopy with HPGe… Expand
Stock solutions of (233)Th were produced by the (232)Th(n,gamma) reaction and multiple purifications were used to obtain relative intensities of weak transitions. Liquid scintillation counting… Expand
Study to determine the importance of images to experienced chemists and the nature of images among learners, with particular attention to correlations with level of learning.
Abstract The energies and emission probabilities (intensities) of gamma-rays emitted in radioactive decays of particular nuclides are the most important characteristics by which to quantify mixtures… Expand
A systematic study of thermal silver ion exchange used for the fabrication of optical channel waveguides is reported in a single-alkali glass. The diffusion equilibrium and diffusion dynamics are… Expand
Abstract Solvent extraction was used to prepare pure solutions of 237Np and 233Pa. Portions were used for liquid scintillation counting (disintegration rates) and γ -ray spectroscopy with HPGe… Expand
Abstract The emission of K X-rays by fission fragments within ≈ 1 nsec after fission has been studied as a function of fragment mass and nuclear charge for thermal neutron-induced fission of 233 U,… Expand
Abstract Consistent, clean, and high chemical recovery is important for 63 Ni analysis of low-level radioactive waste samples from nuclear power reactors. These samples generally contain numerous… Expand
Abstract A stock solution of 238 Np was produced by the 237 Np(n,γ) reaction and was purified by solvent extraction. Three small portions were used to measure absolute activity by liquid… Expand