Cloud chamber studies of cosmic rays

by Fletcher, James C.

Abstract (Summary)
The large magnet and 22" diameter cloud chamber constructed by Dr. S. H. Neddermayer and Dr. C. D. Anderson has been used in an attempt to observe mesotron disintegrations at sea level. Although no recognizable disintegrations were observed, useful data concerning energy loss of charged particles in carbon were obtained. It was found that the present theory of energy loss of electrons first derived by Bloch and others is in very good agreement with the experimental results for the energy range 3-25 Mev. Also the results obtained provide good agreement with the theory of knock-on production by mesotrons for knock-ons whose energies lie in the range of 2-50 Mev. It is believed that information about knock-ons of somewhat higher energies than this would be quite useful in determining some of the properties of the mesotron.
Bibliographical Information:

Advisor:C.D. Anserson

School:California Institute of Technology

School Location:USA - California

Source Type:Master's Thesis



Date of Publication:01/01/1948

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