Köln 2004 – wissenschaftliches Programm
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HK: Physik der Hadronen und Kerne
HK 28: Nuclear and Particle Astrophysics I
HK 28.6: Vortrag
Mittwoch, 10. März 2004, 12:15–12:30, F
Electron Screening in metals — •Franceso Raiola and Claus Rolfs — Institut für Experimentalphysik III, Ruhr-Universität Bochum, Universitätsstr. 150, 44780 Bochum
The electron screening effect in the d(d,p)t reaction has been studied at the Ruhr-Universität Bochum for 30 deuterated metals and 11 deuterated insulators/semiconductors. The deuterated metals were produced via implantation of low-energy deuterons.
As compared to measurements performed with a gaseous D2 target, a large effect has been observed in the metals. An explanation of the large effect in metals is possibly provided by the classical plasma screening of Debye applied to the quasi-free metallic electrons.
A critical test of the classical Debye model is the temperature dependence Ue ∝ T1/2. This temperature testing is on the way and new results will be presented. We thank Sheng Zeng (China) for the assistance during the experiment.