Abstract
We have measured protons and tritons from the d (d,p) t reaction in liquid In, Sn, Pb and Bi during the D+3 molecular deuterium beam bombardment for 15 < E < 60 keV. Observed energy spectra and yield excitation functions are anomalous and suggest that the target deuteron is also in motion. It is found that the reaction mechanism is unique to the molecular beam in such a way that one deuteron in a molecule is elastically scattered by a host metal atom and then it collides with the other to cause the d+d reaction. We call it as the cooperative colliding mechanism (CCM). Experimental data are compared with the CCM calculation and values of the screening energy of the d+d reaction are deduced. They are 380 ± 80, 570 ± 80, 670 ± 100 and 490 ± 100 eV for In, Sn, Pb and Bi, respectively. It is concluded that the screening energy of the d+d reaction in an electron plasma in metal is really large: the averaged value of 530 eV is more than ten times larger than the simple Thomas-Fermi screening prediction.
Original language | English |
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Title of host publication | Experiments and Methods in Cold Fusion - Proceedings of the ICCF 19 Conference |
Editors | Jean-Paul Biberian |
Publisher | International Society for Condensed Matter Nuclear Science (ISCMNS) |
Pages | 127-134 |
Number of pages | 8 |
Volume | 19 |
ISBN (Electronic) | 9780000000002 |
Publication status | Published - 2016 Jun 1 |
Event | 19th International Conference on Condensed Matter Nuclear Science, ICCF 2015 - Padua, Italy Duration: 2015 Apr 13 → 2015 Apr 17 |
Other
Other | 19th International Conference on Condensed Matter Nuclear Science, ICCF 2015 |
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Country | Italy |
City | Padua |
Period | 15/4/13 → 15/4/17 |
Keywords
- Cooperative colliding mechanism
- DD reaction in metal
- Liquid metal
- Low-energy deuteron beam
- Screening potential
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Nuclear and High Energy Physics
- Nuclear Energy and Engineering
- Condensed Matter Physics