Electro-optical properties of an ABS-type insulating polymer irradiated with neutrons
- and others
An extruded insulating polymer [a possible candidate for the outer walls of resistive plate counters in the muon sub-systems for the Large Hadron Collider detectors] shows a significant drop in its bulk electrical resistivity after irradiation with neutrons (3-4 MeV peak, flux 3.6x10{sup 6}/sec/cm{sup 2}). Irradiation times were 11, 50, and 77 days. Also, the dielectric constant was studied at 30{degrees}C via a Cole-Cole plot using a Precision Time-Domain Dielectric Spectrometer. A depolarization current was investigated from 30{degrees} to minus 120{degrees}C using Thermally Stimulated Current Spectroscopy (TSCS). Most interesting was a correlation discovered between resistivity and absorption/transmission of polarized light in the visible region when a sample of the polymer is inserted between crossed polarizers. This experiment illustrates the birefringent nature of the material as it shows a dependence of transmitted light intensity on both the rotation angle of the sample and on wavelength. An electro-optical mechanism is suggested to qualitatively describe this discovery of common fluctuations in resistivity and birefringent behavior after neutron irradiation.
- OSTI ID:
- 182229
- Report Number(s):
- CONF-950140-; TRN: 96:006894
- Resource Relation:
- Conference: 3. international conference on polymer characterization, Denton, TX (United States), 11-15 Jan 1995; Other Information: PBD: 1995; Related Information: Is Part Of Third international conference on polymer characterization; PB: 109 p.
- Country of Publication:
- United States
- Language:
- English
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