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

Molecules

Lorenzo Torrisi¹  Peter V. Bonnesen¹ 

[1] Dipartimento di Fisica e SdT, Università di Messina, V.le S.F. d’Alcontres 31, 98166 S. Agata, Messina, Italy; E-Mail

关键词: D-D fusion;    laser-generated plasma;    time-of-flight measurements;   

DOI  :  10.3390/molecules191017052

来源: mdpi

【 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.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.