Neutron fluences of the D-D fusion reaction at 1016 W/cm2 laser-target interactions

Plasma Physics by Laser and Applications 2013 Conference

Cavallaro, S.^1 ; Torrisi, L.^1,2 ; Cutroneo, M.^1,2 ; Krása, J.^3 ; Ullschmied, J.^4

INFN-LNS, Via S. Sofia 44, 95123 Catania, Italy^1

Dip.to di Fisica, Università di Messina, V.le F.S. D'Alcontres 31, Messina, 98166 S. Agata, Italy^2

Institute of Physics, ASCR, V.v.i., 182 21 Prague 8, Czech Republic^3

Institute of Plasma Physics, ASCR, V.v.i., 182 00 Prague 8, Czech Republic^4

关键词: Deuterium deuteriums;    Focal positions;    Laser-target interaction;    Neutron fluences;    Reaction mechanism;    Target thickness;    Thomson spectrometers;    Track detectors;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/508/1/012023/pdf
DOI  :  10.1088/1742-6596/508/1/012023

来源: IOP

【 摘 要 】

In last decade many studies have been carried on deuterium-deuterium nuclear reaction induced in laser-target interactions. The relationships between neutron yields and reaction mechanisms and laser-target patterns need to be further clarified. In this contribution we investigate on fusion yields by changing the target thickness and composition and the laser energy and focal position. The experiment has been performed at PALS Laboratory in Prague. Ion yields have been measured by a Thomson spectrometer and by SiC detectors placed at suitable distances in TOF configuration. Neutron fluences have been evaluated by neutron bubble dosimeters and CR39 track detectors. Results about neutron fluences and fusion process are presented and discussed.