Screening and resonance enhancements of the H-2(d, p)H-3 reaction yield in metallic environments

Czerski K., Weissbach D., Kilic A. İ., Ruprecht G., Huke A., Kaczmarski M., ...More

EPL, vol.113, no.2, 2016 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 113 Issue: 2
  • Publication Date: 2016
  • Doi Number: 10.1209/0295-5075/113/22001
  • Journal Name: EPL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Eskisehir Osmangazi University Affiliated: No

Abstract

The H-2(d, p)H-3 reaction cross-section has been measured for deuteron energies below 25 keV in a deuterized Zr target under improved ultra-high-vacuum conditions and controlled target surface contamination. The increase of reaction enhancement factors towards lower energies is much weaker than that determined before and can result not only from the electron screening effect but also from a suggested 0(+) threshold resonance in He-4. The cross-section calculations performed within the T-matrix approximation enable to estimate a coherent resonance contribution and explain the observed energy dependence of the enhancement factors. Additionally, indications for the increase of the screening energies due to impurities at the target surface could be found. Copyright (C) EPLA, 2016