RESONANCE IN THE ELASTIC SCATTERING OF ELECTRONS IN HELIUM
Journal Article
·
· Phys. Rev. Letters
The elastic cross section in helium was examined using electrons with a narrow energy spread. A sharp resonance was found in the scattered electrons at an angle THETA = 72 deg at an energy below the onset of the first excited state. A double electrostatic anaiyzer was used for the experiment. The observation of the resonance in the elastic cross section indicated that compound states played a role in electron scattering by atoms just as they do in neutron scattering by nuclei and electron scattering by molecules. The existence of a compound state has a bearing on calculations of atomic excitation cross sections, particularly near the excitation threshold. (C.E.S.)
- Research Organization:
- Westinghouse Research Labs., Pittsburgh
- NSA Number:
- NSA-17-011408
- OSTI ID:
- 4700861
- Journal Information:
- Phys. Rev. Letters, Journal Name: Phys. Rev. Letters Vol. Vol: 10
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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