Influence of the target surface contamination on UHV screening energies

Targosz-Sleczka N., Czerski K., Huke A., Martin L., Heide P., Kilic A. İ., ...More

4th International Conference on Nuclear Physics in Astrophysics, Frascati, Italy, 8 - 12 June 2009, vol.202 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 202
  • Doi Number: 10.1088/1742-6596/202/1/012041
  • City: Frascati
  • Country: Italy
  • Eskisehir Osmangazi University Affiliated: No


The d + d fusion reactions have been investigated in the Zirconium environment under ultra high vacuum (UHV) conditions for projectile energies below 30 keV. The experimentally determined screening energy value of 497 +/- 7 eV is larger than the previous results by a factor of almost two. Despite the UHV conditions a small deviation between experimental data and the theoretical curve arising from the target surface contamination could be still observed at the lowest projectile energies. Calculations made under the assumption of formation of a Zirconium oxide contamination, show that every atomic monolayer reduces the estimated screening energy significantly.