Metals, a Plasma of the Poor Man: Electron Screening in 7Li(p,{alpha}){alpha} and 6Li(p,{alpha})3He for Different Environments

Journal Article · Wed May 24 04:00:00 EDT 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2213068· OSTI ID:20798715

Rolfs, C ^[1]

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1. Institut fuer Physik mit Ionenstrahlen, Ruhr-Universitaet Bochum (Germany)

The electron screening in the 7Li(p,{alpha}){alpha} reaction has been studied at Ep = 30 to 100 keV for different environments: Li2WO4 insulator, Li metal, and PdLi alloys. For the insulator a screening potential energy of Ue = 185{+-}150 eV was observed, consistent with previous work and the atomic adiabatic limit. However, for the Li metal and the PdLi alloys we find large values of Ue = 1280{+-}60 and 3790{+-}330 eV, respectively: the values can be explained by the plasma model of Debye applied to the quasi-free metallic electrons in these samples. Similar results have been found for the 6Li(p,{alpha})3He reaction supporting the hypothesis of the isotopic independence of the electron screening effect. The data together with previous studies of d(d,p)t and 9Be(p,{alpha})6Li in metals verify the Debye model scaling Ue {proportional_to} Zt (charge number of target)

• OSTI ID: 20798715
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 837; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BERYLLIUM 9
DEUTERON REACTIONS
ELECTRONS
EV RANGE
HELIUM 3
KEV RANGE
LITHIUM 6
LITHIUM 6 TARGET
LITHIUM 7
LITHIUM 7 TARGET
LITHIUM ALLOYS
PLASMA
POTENTIAL ENERGY
PROTON REACTIONS
PROTON-NUCLEON INTERACTIONS