✦ LIBER ✦

Absorption of cosmic radiation in matter

✍ Scribed by Arthur Wickes Nye

Publisher: Elsevier Science
Year: 1937
Tongue: English
Weight: 229 KB
Volume: 223
Category: Article
ISSN: 0016-0032
DOI: 10.1016/s0016-0032(37)91263-8

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✦ Synopsis

The paper describes absorption and shower producing effects of cosmic radiation in water, coal, copper sulphate, iron sulphide, sand, and barium sulphate. The measurements were made with triple coincidence Geiger counters, near sea level. The coefficient of absorption was not found to be strictly proportional to density, substances of higher atomic number showing departures. The coefficients per bound electron was found to be constant, within the precision of the observations. Showers were found to follow the direction of the primaries, and to show maxima with increasing thicknesses of shower-producing matter in the region of 5o-Ioo gms./cm3 of material.

i. INTRODUCTION.

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