An ultrafast quenched plastic scintillation detector was used to measure the fusion fuel ion temperature at low implosion (DT) neutron yield in the initial experiment performed at the Shenguang II laser facility. The typical temperatures of exploding pusher targets for direct drive were around 4 keV and the uncertainties were ±15–23%. The detection efficiency of the detector to DT neutrons was calibrated at a K-400 accelerator. The time response function of the detection system was calibrated by implosion neutrons from a DT-filled capsule, which can be regarded as a δ function pulsed neutron source due to its much narrower pulse width than that of the measured neutron time-of-flight spectrum.
Fusion fuel ion temperature diagnostic for directly driven implosions
J. B. Chen, Z. J. Zheng, H. S. Peng, B. H. Zhang, Y. K. Ding, M. Chen, H. S. Chen, T. S. Wen; Fusion fuel ion temperature diagnostic for directly driven implosions. Rev. Sci. Instrum. 1 September 2001; 72 (9): 3534–3536. https://doi.org/10.1063/1.1396665
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