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ERIC Number: EJ818989
Record Type: Journal
Publication Date: 2008-Sep
Pages: 7
Abstractor: As Provided
Reference Count: 9
ISSN: ISSN-0143-0807
A Novel Experiment to Investigate the Attenuation of Alpha Particles in Air
Andrews, D. G. H.
European Journal of Physics, v29 n5 p1077-1083 Sep 2008
A simple student experiment investigating dependence on air pressure of the attenuation of alpha particles in air is described. An equation giving the pressure needed to absorb all alpha particles of a given energy is derived from the Bethe-Bloch formula. Results are presented for the attenuation of alpha particles from americium 241 and radium 226. The experimental results are in close agreement with the theoretical predictions. (Contains 4 figures.)
Institute of Physics Publishing. The Public Ledger Building Suite 929, 150 South Independence Mall West, Philadelphia, PA 19106. Tel: 215-627-0880; Fax: 215-627-0879; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education; Secondary Education
Audience: Students; Teachers
Language: English
Sponsor: N/A
Authoring Institution: N/A