CARBONACEOUS CLUSTERS IN IRRADIATED POLYMERS AS REVEALED BY UV-VIS SPECTROMETRY

被引：195

作者：

FINK, D

CHUNG, WH

KLETT, R

SCHMOLDT, A

CARDOSO, J

MONTIEL, R

VAZQUEZ, MH

WANG, L

HOSOI, F

OMICHI, H

GOPPELTLANGER, P

机构：

[1] UNIV AUTONOMA METROPOLITANA IZTAPALAPA,DEPT FIS,MEXICO CITY 09340,DF,MEXICO

[2] GESELL SCHWERIONENFORSCH MBH,D-64220 DARMSTADT,GERMANY

[3] JAPAN ATOM ENERGY RES INST,TAKASAKI RADIAT CHEM RES ESTAB,TAKASAKI,GUMMA 37012,JAPAN

来源：

RADIATION EFFECTS AND DEFECTS IN SOLIDS | 1995年 / 133卷 / 03期

关键词：

POLYMERS; ION IRRADIATION; CARBON CLUSTERS; UV-VIS SPECTROMETRY; ELECTRONIC ENERGY TRANSFER;

D O I：

10.1080/10420159508223990

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Carbonaceous clusters-supposed to be the carriers of electric conductivity-are formed along latent tracks of energetic ions in polymers. The different experimental techniques for cluster determination are summarized. Here we present some new results which have been derived from UV-Vis spectrometric examinations. Especially the initial phase of cluster growth is studied in derail. There are hints that a threshold energy density has to be deposited in the polymer before cluster growth sets in. This threshold is similar to the one for producing radicals (as seen by EPR studies), and to the one for the onset of strong polymeric conductivity. The cluster growth is shown to scale rather well with the mean transferred electronic energy density. The increase in cluster growth with energy density is much slower than the one of radical formation and conductivity.

引用

页码：193 / 208

页数：16

共 40 条

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