Electron screening in the 1H(7Li,)4He reaction

• Published in: The European physical journal. A, Hadrons and nuclei Vol. 44; no. 1; pp. 71 - 75
• Main Authors: Lipoglavšek, M., Čadež, I., Markelj, S., Pelicon, P., Vavpetič, P.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer-Verlag 01-04-2010; Springer
• Subjects: Exact sciences and technology; Hadrons; Heavy Ions; Nuclear Fusion; Nuclear Physics; Particle and Nuclear Physics; Physics; Physics and Astronomy; Regular Article - Experimental Physics; Hydrogen Concentration; Elastic Recoil Detection Analysis; Electron Screening; Bare Nucleus; Beam Dose; Screening; Tensile stress; Diffusion; Cross sections
• ISSN: 1434-6001; 1434-601X
• DOI: 10.1140/epja/i2010-10937-7

We have measured the cross-section for the
1
H(
7
Li,
)
4
He reaction at lithium beam energies from 0.34 to 1.05MeV. Hydrogen was forced by diffusion into Pd and PdAg alloy foils. A large electron screening effect was observed only when foils were under tensile stress. A dependence of the screening potential on hydrogen concentration or Hall coefficient of the metallic host could not be established.