α particle space distribution from fusion reactions in Boron irradiated by mono-energetic protons

Abstract

Abstract. This work presents results regarding the p + 11 B → 3α + 8.7 MeV aneutronic fusion reaction. We obtained such results by directing a 0.675 MeV proton beam from a Tandetron accelerator to a solid Boron sample, varying the incidence angle. Three different detectors were used to reveal the alpha particles emitted during the experiments. The evidence obtained leads us to propose an innovative scheme to investigate the yield of the aneutronic reaction when the proton beam is directed against a 11 B laser induced plasma.

Diagnostic Methodologies of Laser-Initiated 11B(p,α)2α Fusion Reactions

“…This will cause an enhanced effect both on the spectrum and on the overall number of exiting particles. Thus, the actual spectrum will be dependent on the angle of detection with respect to the target normal, because of the different angular-dependent thickness of the particle path in B [2,3,32,41].…”

“…In Figure 4, the number of alpha particles detected in an experiment at CEDAD Laboratory (Lecce, Italy) is shown [41]. A proton beam of 675 keV and 2 nA current was accelerated from a Tandetron and impinged in the normal direction of the surface of a solid boron target for a total of 900 s, corresponding to a total number of protons N p ∼ 10 13 .…”