Color and fluorescence of polytetrafluoroethylene treated by γ-irradiation near the melting point

Autor:	S. A. Khatipov, D. I. Seliverstov, S.T. Sychkova, V. G. Klimenko, Ravil' N Nurmukhametov, T. V. Sakhno, Yuriy Sakhno
Rok vydání:	2011
Předmět:	Nuclear and High Energy Physics Materials science Polytetrafluoroethylene Analytical chemistry γ irradiation Fluorescence chemistry.chemical_compound chemistry Melting point sense organs Irradiation Molecular oxygen Absorption (chemistry) Instrumentation Layer (electronics)
Zdroj:	Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 269:2600-2604
ISSN:	0168-583X
DOI:	10.1016/j.nimb.2011.07.017
Popis:	Spectral characteristics of absorption and fluorescence of the optical centers formed in PTFE during gamma-irradiation near its melting temperature have been established. It was determined, that the different optical centers are responsible for the fluorescence and coloration of the irradiated PTFE. The fluorescent structures are formed both at a near-surface layer and in the bulk of the samples. Their concentration slightly changes at the various dosage of gamma-radiation (which ranged from 0.2 to 1.0 MGy), while it decreases notably with deepening into a sample. It was confirmed, that the molecular oxygen traces in a sample play a key role in the formation of the optical emission centers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::290e44cb65cf108372c285b15a13590c https://doi.org/10.1016/j.nimb.2011.07.017 Zobrazit plný text záznamu Full Text from ScienceDirect