Hostname: page-component-cd9895bd7-fscjk Total loading time: 0 Render date: 2024-12-25T02:14:23.623Z Has data issue: false hasContentIssue false

The Capture of Electrons by α-Particles

Published online by Cambridge University Press:  24 October 2008

H. C. Webster
Affiliation:
Clare College
E. Rutherford
Affiliation:
Clare College

Extract

Davis and Barnes have recently reported new and unexpected phenomena concerning the capture of electrons by swift α-particles. A beam of α-particles from a polonium source was passed through a stream of electrons emitted from an oxide-coated filament and accelerated by a known voltage so as to move in directions roughly parallel to those of the α-particles. The α-particles were then deflected by a magnetic field, and finally fell on a zinc sulphide screen, where the scintillations were counted. If any of the α-particles captured electrons while passing through the electron stream, they would fall on a different part of the screen, since the magnetic deflection is proportional to the charge. Any capture could thus easily be detected, and its dependence on the accelerating voltage examined.

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 1931

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

* Davis, and Barnes, , Phys. Rev., 34, 152 (1929)CrossRefGoogle Scholar; Barnes, A. H., Phys. Rev., 35, 217 (1930).CrossRefGoogle Scholar

* Davis, , Barnes, and Hull, , Washington Meeting of American Physical Society, 04 1930.Google Scholar

Cravath, , Phys. Rev., 35, 659 (1930).Google Scholar

Kallmann and Rosen, private communication.

§ Kenty, , Phys. Rev., 32, 624 (1928).CrossRefGoogle Scholar

Mohler, , Phys. Rev., Suppl. 1, 216 (1925).Google Scholar

* Rutherford, , Phil. Mag., 47, 277 (1924).CrossRefGoogle Scholar

* Davis, , Barnes, and Hull, , Washington Meeting of American Physical Society, 04 1930.Google Scholar

Curie, I., Ann. de phys., 3, 299 (1925).CrossRefGoogle Scholar

* Rutherford, , Phil. Mag., 47, 277 (1924.)CrossRefGoogle Scholar