Systematic Study of (d,n) Reactions at Ed = 16 MeV Using a Deuterated Scintillator Array

We have developed a multi-element deuterated liquid scintillator array for the study of reactions involving neutrons utilizing high-speed digital signal processing. A systematic study of (d,n) reactions at Ed = 16 MeV on 9Be, 11B, 13C, 14N, 15N, and 19F has been conducted from 10° to 160° (lab). In addition to previously unmeasured back-angle cross sections, this data can complement existing and future (3He,d) measurements as an analog to (p,γ) for astrophysics applications

Systematic Study of (d,n) Reactions at E

We have developed a multi-element deuterated liquid scintillator array for the study of reactions involving neutrons utilizing high-speed digital signal processing. A systematic study of (d,n) reactions at Ed = 16 MeV on 9Be, 11B, 13C, 14N, 15N, and 19F has been conducted from 10° to 160° (lab). In addition to previously unmeasured back-angle cross sections, this data can complement existing and future (3He,d) measurements as an analog to (p,γ) for astrophysics applications

Proton pair correlations and the neutrinoless double-beta decay of Ge-76

Proton pair correlations relevant for the neutrinoless double-β decay of 76Ge have been probed via the 74,76Ge(3He,n) reactions at 16 MeV. No evidence for pairing vibrations in either nucleus is observed at sensitivity limits of ∼6% and ∼19% of the ground-state strength in 76Se and 78Se, respectively. These results are relevant for the understanding of matrix elements for neutrinoless double-β decay. The lack of pairing vibrations is consistent with a simple BCS structure for the ground states of 76Ge and 76Se, assumed in quasiparticle random phase approximation (QRPA) models of the process

Backscattering measurement of 6 He on 209 Bi: Critical interaction distance

An elastic backscattering experiment has been performed at energies below the Coulomb barrier to investigate static and dynamic effects in the interaction of He6 with Bi209. The measured cross sections are presented in terms of the dσ/dσRuth ratio, as a function of the distance of closest approach on a Rutherford trajectory. The data are compared with a three-body CDCC calculation and good agreement is observed. In addition, the critical distance of interaction was extracted. A larger value was obtained for the exotic He6 nucleus as compared with the weakly bound Li6 and Be9 nuclei and the tightly bound He4, C12, and O16 nucle