Two peaks resonant model of energy absorption by irradiated linear polymers

Research output: Contribution to journalConference articlepeer-review

Abstract

A detailed experimental study has shown resonant energy absorption by some linear polymers (polytetra-fluoroethylene and others) at definite temperatures on the background of monotone change in the heat capacity C(T) and the thermal conductivity λ(T). Curves of λ(T) and C(T) for polytetrafluoroethylene exhibit two peaks in the room temperature region. The paper presents two peaks resonant model of energy absorption. The first peak is associated with absorption of energy by the oscillating system (models of string and spring) before the phase transition and the second one with energy absorption after the phase transition. Decrease of the peak amplitude with increase of the exposure dose is explained by destruction of the material and shift of peak towards lower temperatures is due to decrease of the effective length of elementary cell.

Original languageEnglish
Pages (from-to)239-241
Number of pages3
JournalOptical Materials
Volume12
Issue number2
DOIs
Publication statusPublished - 1 Jan 1999
Externally publishedYes
EventProceedings of the 1998 Molecular Photonics for Optical Telecommunications: Materials, Physics and Device Technology - Strasbourg
Duration: 15 Jun 199819 Jun 1998

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Computer Science(all)
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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