Image: Physicist Studying Alpha Rays GPN-2000-000381

Description: NACA Physicits studying Alpha Rays in a continuous cloud chamber. A cloud chamber is used by Lewis scientists to obtain information aimed at minimizing undesirable effects of radiation on nuclear-powered aircraft components. Here, alpha particles from a polonium source emit in a flower-like pattern at the cloud chamber's center. The particles are made visible by means of alcohol vapor diffusing from an area at room temperature to an area at minus -78 deg. Centigrade. Nuclear-powered aircraft were never developed and aircraft nuclear propulsion systems were canceled in the early 1960s.
Title: Physicist Studying Alpha Rays GPN-2000-000381
Credit: NIX C1957-45925 GPN-2000-000381
Author: NASA/GRC/Bill Bowles
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License: Public domain
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