The preparation, properties, and uses of americium-241, alpha-, gamma-, and neutron sources
U.S. Atomic Energy Commission, 1962 - Science - 68 pages
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60-kev gamma radiations absorption cross-section activation analysis alpha particles alpha radioactivity alpha sources Am-B sources americium AmF_ AmOp aqueous phase atomic number beryllium boron calibration curve capsule chemical column contact smear count rate counter Decay Scheme detector eluate elution emitted Encapsulation evaporation film Flowing Streams Fluoroscopy foil gamma emission gamma photons gamma source Gamma Spectra gamma spectrometry geometry glove box gram half-life high-energy isotopic leakage low-intensity neutron sources LUCITE measurements metal method micrograms milligram milliliters mixture Molar Concentration monitored mr/hr neutron absorptiometry Neutron Absorption Neutron Activation Neutron Activation Analysis neutron emission Neutron Energy Distribution NH^SCN nickel number of atoms paraffin phases were allowed plutonium polyethylene Prompt Gamma purification quantity radiographic rare earths ratio sealed separatory funnel shown in Figure solutions containing Source Container Source Holder Source Preparation source window specific activity stainless steel technique tion UNCLASSIFIED ORNL-LR-DWG