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The sensitive time of a thin gap spark chamber immersed in a magnetic field was measured. The magnetic field was normal to the electric field of the chamber, and various amounts of Freon 12 (CCl 2 F 2 ) were used to decrease the sensitive time. A concentration of 100 ppm Freon 12 was sufficient...
An apparatus is described for the measurement of the kinetics of fairly fast (half times 1–5 min), homogeneous, liquid chemical reactions, by recording the temperature‐time curve in an adiabatic batch reactor. Adiabatic conditions are maintained by keeping the metal reactor as closely as...
The single electron statistics of a porous KCl transmission dynode are studied experimentally. Pulse amplification for subsequent analysis in a multichannel analyzer is obtained by coupling the output of the transmission dynode to a 14 stage electron multiplier. The observed pulse height...
The piezoelectric and mechanical behavior at 79°K of uniaxially strained X‐cut quartz has been experimentally investigated by an impact technique for stresses ranging between 6 and 21 kbar. Knowledge of this behavior is necessary to extend to liquid nitrogen temperature the use of large...
A new plasma source is described. A collimated beam of photons of 6 μsec duration generates a plasma by single quantum photoionization of a rarefied gas. A uniform plasma column with sharply defined initial boundaries is produced remote from the container walls and in the absence of currents or...
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