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An improved Bunsen ice calorimeter has been constructed and calibrated for use in measuring critical region heat capacities. A novel method for continuously monitoring the weight of the mercury displaced by using a flexible capillary between the calorimeter and an analytical balance makes...
Experiments were conducted to determine ac losses, principally near 10 5 cps, in coils and leads fabricated from high field superconducting wires. The samples were placed in an environment similar to what might be experienced in actual use in a low temperature experiment utilizing adiabatic...
A pressure bar gauge was constructed from beryllium. The active element is a PZT polarized ferroelectric disk. The gauge was subjected to step pressure loading; the time taken for the output signal to increase from 10 to 90% of its final steady value is 0.54 μsec which is substantially faster...
A copper block drop calorimeter to measure the heat content of intensely alpha active materials has been constructed. The furnace, calorimeter, and aluminum isothermal jacket are contained within an inert atmosphere glovebox. This permits the use of unencapsulated materials without exposing...
A probe assembly is described which permits the use of an electron microscope to irradiate materials with low energy (50–150 keV) electrons. The electron beam current produced by the microscope can be monitored quickly and accurately with this unit so that the irradiation rate can be closely...
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