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File:Zertrümmerungsterne.jpg

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First observation of a cosmic ray colliding with and disintegratiing an atomic nucleus.

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Description
English: In 1937, Marietta Blau and Hertha Wambacher discovered nuclear disintegration stars (Zertrümmerungsterne) due to spallation in nuclear emulsions that had been exposed to cosmic radiation at a height of 2300m on the Hafelekarspitze above Innsbruck, Austria. 8 charged particle tracks are identified (diagram) from the disintegration of a Silver or Bromine nucleus; tracks moving at a steep angle w.r.t. the nuclear emulsion are less well focussed by the camera optics. Higher grain density = lower velocity, for equal electric charge.
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Author Reculet

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Creative Commons CC-Zero This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication.
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current11:24, 26 December 2023Thumbnail for version as of 11:24, 26 December 20232,087 × 2,811 (309 KB)Reculet (talk | contribs)Uploaded own work with UploadWizard

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