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An improved integrator circuit for measuring the ion beam current used in nuclear research is described. A condenser is allowed to be charged and upon reaching a definite potential is discharged through a thyratron tube. This action is brought about at the proper point by a trip circuit composed...
A description is presented of the equipment for the measurement of the pulse size from Geiger‐Mueller counters, and the results are given for the gas mixtures 90 percent He 10 percent H 2 , 90 percent Ne 10 percent H 2 , 90 percent A 10 percent H 2 , 100 percent H 2 , and 90 percent A 10...
The properties of beryllium which make it the ideal choice of material for windows used in transmitting long wave‐length x‐rays are discussed. Diffraction x‐ray tubes of the permanently evacuated type using beryllium windows are described.
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