[en] A method was developed for making high-purity carbon-14 films by radio-frequency cracking of carbon-14 labelled acetylene. The method requires only small volumes of acetylene and achieves isotopic purity of over 95% in the targets produced. The process has overall efficiency of about 22% with about 29% of the acetylene deposited on the target discs. A process for making acetylene from carbon-14 labelled barium carbonate by reacting the carbonate with magnesium and the resulting carbide with water was found to give better yields than the process based on reaction of the carbonate with lithium

[en] Liquid mercury is recovered from its partial amalgam with copper by heating to the dissociation temperature and condensing the vapor on the walls of a reactor vessel. The technique has been used to recover small quantities of isotopically enriched mercury

[en] A new technique which produces high quality self-supporting calcium targets between 0.5 to 10 mg/cm² thickness was developed. Calcium metal is evaporated onto the mirror finish of a chromium coated metal plate from which it can be lifted without the use of a parting agent. The resulting targets are of high purity, uniform, mechanically stable, and relatively chemically inactive

[en] This chapter reviews the production technology for stripping foils that can withstand long-term bombardment and retain their original areal density and mechanical integrity while resulting in minimum energy loss. Topics considered include the theory of ion stripping, the development of two-stage-acceleration machines, stripping in tandem accelerators, carbon as a stripping foil, methods of preparation of carbon films (the carbon-arc method, the electron bombardment technique, the JAERI method), the limitations of carbon films under heavy-ion bombardment, the laser graphitization of carbon films, the preparation of stripper foils by the glow-discharge cracking of ethylene gas, the mechanical relaxation of carbon films, the characterization of cracked-ethylene foils used in heavy-ion stripping, engineering problems in mechanisms for accelerator-terminal foil changing, and foil stripping in cyclotrons. It is concluded that the use of solid strippers has increased in importance in the search for higher output energies with the advent of more sophisticated heavy-ion machines

[en] A technique that produces high quality self-supporting isotopic cadmium targets has been developed. Cadmium oxide is dissolved in dilute sulfuric acid and the metal extracted by the electrolysis process. It is then evaporated onto a glass substrate which has been previously coated with a thin film of cadmium chloride. The metal is released from its substrate by immersion in methyl hydrate

[en] The new Chalk River Heavy Ion Facility will consist of a 13-MV MP Tandem Accelerator injecting into a K=520 (ME/q²) superconducting cyclotron. Physics research will be carried out in such fields as the study of nuclei far from β stability, heavy ion reactions, study of nuclei with very high spin, atomic physics, etc. The laboratory will supply not only targets needed for the experiments, but also the large quantity of carbon stripper foils for the cyclotron and the large polypropylene windows needed for various detectors and counters. It will supply such materials as carbon-14 and tritium targets to other laboratories on a limited basis

[en] A technique is described for evaporating a conductive coating on stretched polypropylene films. These are used as electrodes in a parallel plate avalanche counters for heavy ions. The stretching technique is briefly described. Stretched polypropylene films also have applications as windows for high-vacuum isolation, soft x-ray proportional counters, gas absorption cells, and energy-loss nuclear detectors

[en] Multilayer targets containing a central layer sufficiently thin so that all recoil nuclei can traverse it and subsequently stop in a suitable cubic environment have been prepared. Such targets are required in experiments making use of a magnetic field acting on an ion moving through a ferromagnetic material. The preparation and annealing of the ferromagnetic foils (iron and gadolinium) and the fabrication of the multilayer targets are described. (orig.)

[en] A technique for the fabrication of thin, deuterated polyethylene, leak proof bags is described. They are ideal for target holders for (n,γ) studies. Typical weight of a 10 cm³ bag is about 50 mg and the neutron radiative capture probability per unit thermal neutron flux is only 2.2 x 10^-5. (orig.)

[en] The techniques and apparatus described in this paper were developed to fulfill the needs of nuclear physics research at Chalk River. They include: a safe apparatus for the preparation of adsorbed tritium targets, a technique for the fabrication of temperature resistant targets of isotopically enriched selenium, an apparatus for the preparation of reactive metal targets for scattering experiments, and a technique for the fabrication and mounting of ultra-thin, 2 μg/cm² carbon stripper films. (author)