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Titel: Positron trapping in deformed copper down to millikelvins
Autor(en): M. Haaks Person, C. Tramm, I. Müller Person, T. Staab Person, C. Zamponi Person, P. Herzog und K. Maier Person
Journal: Mater. Sci. Forum
Jahr: 2004
Band: 445-6
Seite(n): 96-98
DOI: 10.4028/www.scientific.net/MSF.445-446.96
Datei / URL: http://www.scientific.net/MSF.445-446.96
Zusammenfassung: We have performed a study of the temperature dependence of the S-parameter on slightly deformed (7%) copper over a temperature range from room temperature (300 K) down to 7 mK, using a (3)He/(4)He dilution refrigerator. The sample used is expected to contain a spectrum of lattice defects with both deep and shallow traps. The data show a decrease of the S-parameter with temperature down to about 1K and a slight increase below 800 mK.

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