"Branching Ratio of the d+d Reactions in Metallic Environments at Very Low Energies"
Ali ihsan Kilic, Ph.D student
(id #104)
Seminar: NoPoster: Yes
Invited talk: No
Branching Ratio of the d+d Reactions in Metallic Environments at Very Low Energies
A. I. Kilic1, K. Czerski1,2, A. Huke2, P. Heide2, G. Ruprecht2, N. Targosz-Ślęczka1
1 Institute of Physics, University of Szczecin, Poland
2 Institut fuer Optik und Atomare Physik, Technische Universitaet Berlin, Germany
Our recent investigations of the mirror reactions 2H(d,n)3He and 2H(d,p)3H in the energy range 5 keV – 60 keV applying different self-implanted deuterized metallic targets show that the neutron-to-proton branching ratio and the corresponding angular distributions depend on the target material. Experimental results obtained for the transition metals Zr, Pd, Ta and Al do not differ from those known from gas-target experiments. For the (earth) alkaline metals Li, Sr and Na at deuteron energies below 20 keV an enhancement of the angular anisotropy in the neutron channel and a quenching of the neutron-to-proton branching ratio by about 20% have been observed. This effect can be explained by an induced polarization of the reacting deuterons within the crystal lattice, which could be simulated by changing of the individual transition matrix elements within both R-matrix and DWBA calculations. The reasons for the deuteron polarization in metallic environment remains, however, still unknown.
A. I. Kilic1, K. Czerski1,2, A. Huke2, P. Heide2, G. Ruprecht2, N. Targosz-Ślęczka1
1 Institute of Physics, University of Szczecin, Poland
2 Institut fuer Optik und Atomare Physik, Technische Universitaet Berlin, Germany
Our recent investigations of the mirror reactions 2H(d,n)3He and 2H(d,p)3H in the energy range 5 keV – 60 keV applying different self-implanted deuterized metallic targets show that the neutron-to-proton branching ratio and the corresponding angular distributions depend on the target material. Experimental results obtained for the transition metals Zr, Pd, Ta and Al do not differ from those known from gas-target experiments. For the (earth) alkaline metals Li, Sr and Na at deuteron energies below 20 keV an enhancement of the angular anisotropy in the neutron channel and a quenching of the neutron-to-proton branching ratio by about 20% have been observed. This effect can be explained by an induced polarization of the reacting deuterons within the crystal lattice, which could be simulated by changing of the individual transition matrix elements within both R-matrix and DWBA calculations. The reasons for the deuteron polarization in metallic environment remains, however, still unknown.
