IFIN-HH

Address: 30 Reactorului St., Magurele, jud. Ilfov, ROMANIA, Zip RO-077125

Tel: +(4021) 404.23.00, Fax: +(4021) 457.44.40

Deuteron-induced reactions at low and medium energies: Consistent direct and statistical model analyses

C. Project description

C2. Objectives.

The description of deuteron-nucleus interaction represents an important test for both the appropriateness of reaction mechanism models and evaluation of nuclear data requested especially for fusion reactor technology. The weak binding energy of the deuteron, B=2.224 MeV, is responsible for the high complexity of the interaction process that supplementary involves a variety of reactions initiated by the neutrons and protons coming from deuteron breakup. This has been the reason hampering so far the comprehensive analysis involving large A-range of targets and incident-energy domain. The difficulties to interpret the deuteron-induced reaction data in terms of the usual reaction mechanism models have recently been re-investigated4,5,6,7,8 in the frame of the OECD/NEA JEFF project, looking for a consistent way to include the breakup contribution within the activation cross section calculations too. Nevertheless additional theoretical work is needed in a systematic way on deuteron breakup and its consequences on the final interaction products, being a first objective of this project proposal.

On the other hand, even the total reaction cross sections are less accurately described since, unlike the nucleon case, there are no global optical model potentials (OMP) able to describe the scattering data over a wide range of nuclei and energies sufficiently well. Therefore simultaneous analysis of the deuteron elastic scattering and induced activation appears essential for a consistent input of nuclear model assessment, a prime interest for the deuteron OMP parameters being motivated by their further use in the estimation of deuteron interaction cross sections. Third, usually neglected or very poorly taken into account, the stripping (d,p) and (d,n) and the pick-up (d,t) reactions description is still an open question. The present project proposal aims to deeper understanding of all above-mentioned problems of deuteron interactions with nuclei, all together and consistently with the better-known and described statistical emission.

Overall, the theoretical description of the deuteron interactions with nuclei needs significant improvements that could be validated only by suitable description of experimental data. At the same, following the project eventual achievements as well as in order to additionally check them, setting up of well-documented proposals for the further measurements is planned. There are concerned in this respect experiments at SPIRAL2 and IFIN-HH Tandem VdG accelerator.

References
  • [4] P. Bem, E. Simeckova, M. Honusek, U. Fischer, S. P. Simakov, R.A. Forrest, M. Avrigeanu, A.C. Obreja, F.L. Roman, and V. Avrigeanu, Phys. Rev. C 79, 044610(2009).
  • [5] M. Avrigeanu et al., Fusion Eng. Design 84, 418 (2009).
  • [6] M. Avrigeanu and V. Avrigeanu, EPJ Web of Conferences 2, 01004 (2010).
  • [7] M. Avrigeanu and V. Avrigeanu, J. Phys: Conf. Ser. 205, 012014 (2010).
  • [8] E. Simeckova et al., M. Avrigeanu, and V. Avrigeanu, EPJ Web of Conferences 8, 07002 (2010).