| Summary: | The ionization chamber described herein has the following characteristics: 1. It recharges itself after having collected a definite charge. 2. It generates a pulse at the instant of recharging that is easily amplified electronically. 3. The constant of the ionization chamber is independent of the constants of vacuum tubes but does depend on the constancy of a quartz fiber, the pressure of the gas, and the potential of the charging battery. It has been successfully used to measure cosmic-ray ionization at balloon altitudes both in the United States and in northern Greenland. Copyright © 1953 American Institute of Physics. Received June 5, 1952. It is a pleasure to acknowledge the assistance of Dr. Bernard Steenson, Mr. Edward Stern, and Mr. Alan Johnston, who assisted in the construction and testing of some 40 of these instruments. Assisted in part by the U.S. Office of Naval Research and the U.S. Atomic Energy Commission. Published - NEHrsi53b.pdf
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