In Situ Probing of Fast Defect Annealing in Cu and Ni with a High-Intensity Positron Beam

Autor(en)

Bernd Oberdorfer, Eva-Maria Steyskal, Wolfgang Sprengel, Werner Puff, Philip Pikart, Christoph Hugenschmidt, Michael Zehetbauer, Reinhard Pippan, Roland Würschum

Abstrakt

A high-intensity positron beam is used for specific in situ monitoring of thermally activated fast defect annealing in Cu and Ni on a time scale of minutes. The atomistic technique of positron-electron annihilation is combined with macroscopic high-precision length-change measurements under the same thermal conditions. The combination of these two methods as demonstrated in this case study allows for a detailed analysis of multistage defect annealing in solids distinguishing vacancies, dislocations, and grain growth.

Organisation(en)

Physik Nanostrukturierter Materialien

Externe Organisation(en)

Technische Universität Graz, Technische Universität München, Österreichische Akademie der Wissenschaften (ÖAW)

Journal

Physical Review Letters

Band

105

Anzahl der Seiten

4

ISSN

0031-9007

DOI

https://doi.org/10.1103/PhysRevLett.105.146101

Publikationsdatum

2010

Peer-reviewed

Ja

ÖFOS 2012

103018 Materialphysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/91603e7c-18cb-45cf-bd2c-ac0a6105fa95