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Surface dynamics of a thin polystyrene film probed by low-energy muons

Abstract:

Low-energy muons have been used to probe the local motion in a thin-film sample of polystyrene as a function of depth below the free surface. The muon spin relaxation in zero magnetic field is dominated by a muoniated radical state which is formed on the polystyrene ring. The muon spin-relaxation rate λ is found to be highly sensitive to the dynamical state of the polymer, and λ provides a local probe of changes in the dynamical correlation time around the glass transition. When high-energy m...

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Publication status:
Published

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Publisher copy:
10.1103/PhysRevB.72.121401

Authors


More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Condensed Matter Physics
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Condensed Matter Physics
Role:
Author
Journal:
Physical Review B More from this journal
Volume:
72
Issue:
12
Publication date:
2005-09-01
DOI:
EISSN:
1550-235X
ISSN:
1098-0121
Language:
English
Pubs id:
pubs:27876
UUID:
uuid:6f2c529f-01e9-46c8-8524-e72295e34f71
Local pid:
pubs:27876
Source identifiers:
27876
Deposit date:
2012-12-19

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