TITLE

An apparatus for in situ spectroscopy of radiation damage of polymers by bombardment with high-energy heavy ions

AUTHOR(S)
Baake, Olaf; Seidl, Tim; Hossain, Umme Habiba; Delgado, Adriana O.; Bender, Markus; Severin, Daniel; Ensinger, Wolfgang
PUB. DATE
April 2011
SOURCE
Review of Scientific Instruments;Apr2011, Vol. 82 Issue 4, p045103
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A new target station providing Fourier transform infrared (FT-IR) spectroscopy and residual gas analysis (RGA) for in situ observation of ion-induced changes in polymers has been installed at the GSI Helmholtz Centre for Heavy Ion Research. The installations as well as first in situ measurements at room temperature are presented here. A foil of polyimide Kapton HN® was irradiated with 1.1 GeV Au ions. During irradiation several in situ FT-IR spectra were recorded. Simultaneously outgassing degradation products were detected with the RGA. In the IR spectra nearly all bands decrease due to the degradation of the molecular structure. In the region from 3000 to 2700 cm-1 vibration bands of saturated hydrocarbons not reported in literature so far became visible. The outgassing experiments show a mixture of C2H4, CO, and N2 as the main outgassing components of polyimide. The ability to combine both analytical methods and the opportunity to measure a whole fluence series within a single experiment show the efficiency of the new setup.
ACCESSION #
60283557

 

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