D-D nuclear fusion processes induced in polyethylene foams by TW Laser-generated plasma

0447608 - ÚJF 2016 RIV FR eng C - Konferenční příspěvek (zahraniční konf.)
Torrisi, L. - Cutroneo, Mariapompea - Cavallaro, S. - Ullschmied, Jiří
D-D nuclear fusion processes induced in polyethylene foams by TW Laser-generated plasma.
EPJ Web of Conferences. Vol. 96. Cedex: E D P Sciences, 2015, Č. 01032. ISSN 2100-014X.
[International conference on Dark Matter, Hadron Physics and Fusion Physics. Messina (IT), 24.09.2014-26.09.2014]
Institucionální podpora: RVO:61389021 ; RVO:61389005
Klíčová slova: neutron-production * matter * irradiation
Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače; BH - Optika, masery a lasery (UFP-V)

Deuterium-Deuterium fusion processes were generated by focusing the 3 TW PALS Laser on solid deuterated polyethylene targets placed in vacuum. Deuterium ion acceleration of the order of 4 MeV was obtained using laser irradiance I lambda(2) similar to 5 x 10(16) W mu m(2)/cm(2) on the target. Thin and thick targets, at low and high density, were irradiated and plasma properties were monitored "on line" and "off line". The ion emission from plasma was monitored with Thomson Parabola Spectrometer, track detectors and ion collectors. Fast semiconductor detectors based on SiC and fast plastic scintillators, both employed in time-of-flight configuration, have permitted to detect the characteristic 3.0 MeV protons and 2.45 MeV neutrons emission from the nuclear fusion reactions. From massive absorbent targets we have evaluated the neutron flux by varying from negligible values up to about 5 x 10(7) neutrons per laser shot in the case of foams targets, indicating a reaction rate of the order of 10(8) fusion events per laser shot using "advanced targets".
Trvalý link: http://hdl.handle.net/11104/0249410