Physics – Instrumentation and Detectors
Scientific paper
2006-02-27
JINST1:P05002,2006
Physics
Instrumentation and Detectors
Paper published in the new online only Journal of Instrumentation, JINST. Work supported by: USDOE grant Number DE-FG02-94ER40
Scientific paper
10.1088/1748-0221/1/05/P05002
We studied electron amplification and light emission from avalanches in oxygen-containing gas mixtures. The mixtures investigated in this work included, among others, CO2 and N2O mixed with Triethylamine (TEA) or N2. Double-Step Parallel Gap (DSPG) multipliers and THick Gas Electron Multipliers (THGEM) were investigated. High light yields were measured from CO2+N2 and CO2+TEA, though with different emission spectra. We observed the characteristic wave-length emission of N2 and of TEA and used a polymer wave-length shifter to convert TEA UV-light into the visible spectrum. The results of these measurements indicate the applicability of optical recording of ionizing tracks in a TPC target-detector designed to study the cross section of the 16O(g,a)12C reaction, a central problem in nuclear astrophysics.
Breskin Amos
Chechik Rachel
Dangendorf Volker
Gai Marco
Tittelmeier Kai
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