Is the fast process at the glass transition mainly due to long wavelength excitations?

被引：79

作者：

Buchenau, U ^{[1
]}

Wischnewski, A ^{[1
]}

Richter, D ^{[1
]}

Frick, B ^{[1
]}

机构：

[1] INST MAX VON LAUE PAUL LANGEVIN, F-38042 GRENOBLE 9, FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.77.4035

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Inelastic coherent neutron spectra from deuterated polybutadiene in the neighborhood of the glass transition allows one to discriminate long wavelength and other excitations. The analysis reveals the unexpected result that a dominating part of the so-called fast process in polybutadiene, commonly attributed to picosecond relaxations, rather originates from a strong softening of the sound waves.

引用

页码：4035 / 4038

页数：4

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