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Ion Acceleration and D-D Nuclear Fusion in Laser-Generated Plasma from Advanced Deuterated Polyethylene

机译:先进氘代聚乙烯在激光产生等离子体中的离子加速和D-D核聚变

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摘要

Deuterated polyethylene targets have been irradiated by means of a 1016 W/cm2 laser using 600 J pulse energy, 1315 nm wavelength, 300 ps pulse duration and 70 micron spot diameter. The plasma parameters were measured using on-line diagnostics based on ion collectors, SiC detectors and plastic scintillators, all employed in time-of-flight configuration. In addition, a Thomson parabola spectrometer, an X-ray streak camera, and calibrated neutron dosimeter bubble detectors were employed. Characteristic protons and neutrons at maximum energies of 3.0 MeV and 2.45 MeV, respectively, were detected, confirming that energy spectra of reaction products coming from deuterium-deuterium nuclear fusion occur. In thick advanced targets a fusion rate of the order of 2 × 108 fusions per laser shot was calculated.
机译:氘代聚乙烯靶材已通过10 16 W / cm 2 激光辐照,使用600 J脉冲能量,1315 nm波长,300 ps脉冲持续时间和70微米光斑直径。使用基于离子收集器,SiC检测器和塑料闪烁器的在线诊断程序测量血浆参数,所有这些都用于飞行时间配置中。此外,还使用了Thomson抛物线光谱仪,X射线条纹照相机和校准的中子剂量计气泡检测器。检测到最大能量分别为3.0 MeV和2.45 MeV的特征性质子和中子,证实发生了氘-氘核聚变反应产物的能谱。在较厚的先进目标中,每激光发射的融合率约为2×10 8

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