Fast-response, Low-Afterglow 4,4$”'$-Bis[(2-butyloctyl)oxy]-1,1$'$:4$'$,1$”$:4$”$,1$”'$-quarterphenyl Dye-Based Liquid Scintillator for High-Contrast Detection of Laser Fusion-Generated Neutrons
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概要
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4,4$”'$-Bis[(2-butyloctyl)oxy]-1,1$'$:4$'$,1$”$:4$”$,1$”'$-quaterphenyl (BBQ) dye dissolved in xylene and enriched with oxygen is shown to exhibit the characteristics of an ideal neutron scintillator for time-of-flight (TOF) measurement in a laser fusion experiment. Initial results from excitation with 290-nm pulses show that it has a 0.76-ns fast decay component and a negligible slow decay component or afterglow. By using this scintillator for TOF measurement, we have successfully discriminated between nuclear fusion-generated neutrons and X-rays. This would dramatically improve neutron diagnostics in fast ignition experiments where neutrons have to be detected in the presence of an intense X-ray burst.
- 2011-08-25
論文 | ランダム
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