Measurement of astrophysical S factors and electron screening potentials for d ³He reaction in Zr[D.sub.2], Ti[D.sub.2], [D.sub.2]O, and C[D.sub.2] targets in the ultralow energy region using plasma accelerators

• Published in: Physics of atomic nuclei Vol. 75; no. 1; pp. 53 - 62
• Main Authors: Bystritsky, V.M, Bystritskii, Vit. M, Dudkin, G.N, Filipowicz, M, Gazi, S, Huran, J, Kobzev, A.P, Mesyats, G.A, Nechaev, B.A, Padalko, V.N, Parzhitskii, S.S, Pen'kov, F.M, Philippov, A.V, Kaminskii, V.L, Tuleushev, Yu. Zh, Wozniak, J
• Format: Journal Article
• Language: English
• Published: Springer 01.01.2012
• Subjects: Electrons; Heavy water; Measurement; Toy industry; Zirconium
• ISSN: 1063-7788; 1562-692X
• DOI: 10.1134/S1063778812010048

The paper is devoted to study electron screening effect influence on the rate of d[(d, n).sup.3] He reaction in the ultralow deuteron collision energy range in the deuterated polyethylene (C[D.sub.2]), frozen heavy water ([D.sub.2]O) and deuterated metals (Zr[D.sub.2] and Ti[D.sub.2]). The Zr[D.sub.2] and Ti[D.sub.2] targets were fabricated via magnetron sputtering of titanium and zirconium in gas (deuterium) environment. The experiments have been carried out using high-current plasma pulsed accelerator with forming of inverse Z pinch (HCEI RAS, Russia) and pulsed Hall plasma accelerator (NPI at TPU, Russia). The detection of neutrons with energy of 2.5 MeV from dd reaction was done with plastic scintillation spectrometers. As a result of the experiments the energy dependences of astrophysical S factor for the dd reaction in the deuteron collision energy range of 2-7 keV and the values of the electron screening potential [U.sub.e] of interacting deuterons have been measured for the indicated above target: [U.sub.e](C[D.sub.2]) ≤ 40 eV; [U.sub.e]([D.sub.2]O) ≤ 26 eV; [U.sub.e](Zr[D.sub.2]) = 157 ± 43 eV; [U.sub.e](Ti[D.sub.2]) = 125 ± 34 eV. The value of astrophysical S factor, corresponding to the deuteron collision energy equal to zero, in the experiments with [D.sub.2]O target is found: [S.sub.b](0) = 58.6 ± 3.6 keV b. The paper compares our results with other available published experimental and calculated data.