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Energy Loss of Alpha Particles in Matter


Scientific Study, 2019

3 Pages, Grade: 0.82


Abstract or Introduction

Alpha particles, or Helium nuclei, are projected by a radioactive isotope source into a vacuum chamber filled by varying thicknesses of either metallic foils (aluminium, nickel) or gases (helium, nitrogen, argon). A Silicon detector, placed at the opposite end of the chamber, detects the final energies of the alpha particles as they penetrate through the media. It is theorised by the Bethe-Bloch equation that the greater the thickness of the medium in the vacuum chamber, the lower the final energies. Through comparison between the Bethe-Bloch equation and experimental data, the ionisation values for the various elements used can be found. Our preliminary results for one such element, aluminium, demonstrate an ionisation value of I=141.2eV.

Details

Title
Energy Loss of Alpha Particles in Matter
College
University of Manchester  (The University of Manchester)
Grade
0.82
Author
Year
2019
Pages
3
Catalog Number
V509611
ISBN (eBook)
9783346074706
Language
English
Keywords
energy, loss, alpha, particles, matter
Quote paper
Juli Okayama (Author), 2019, Energy Loss of Alpha Particles in Matter, Munich, GRIN Verlag, https://www.grin.com/document/509611

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