1 / 12

Deuteron Fusion Reactions in Metallic Environments

Deuteron Fusion Reactions in Metallic Environments. K. Czerski Institute of Physics, University of Szczecin. Euratom Workshop Szczecin, 23 . 03 .200 6. Z 1 Z 2 e 2. Z 1 Z 2 e 2. r. r. Z 1 Z 2 e 2. U e =. a. P ( E ). P ( E+ U e ).

oki
Download Presentation

Deuteron Fusion Reactions in Metallic Environments

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Deuteron Fusion Reactions inMetallic Environments K. Czerski Institute of Physics, University of Szczecin Euratom Workshop Szczecin,23.03.2006

  2. Z1 Z2 e 2 Z1 Z2 e 2 r r Z1 Z2 e 2 Ue = a P(E) P(E+Ue) Electron Screening in Nuclear Reactions exp (- r /a ) V(r) = - Ue ≈ R a screening energy s-wave penetration factor

  3. d d + + Experimental Set-Up 200 kV accelerator TU Berlin

  4. d + d 3He + n d + d 3H + p F(E) metal targets K. Czerski et al., Europhys. Lett. 54 (2001) 449 Enhanced Electron Screening Effect I in metallic environments enhancement factor : Uescreening energy Similar results: J. Kasagi et al., J.Phys.Soc.Jap. 71 (2002) 2281 F. Raiola et al., Eur.Phys.J. A13 (2002) 337 gas target Ue = 25±5 eV U.Greife et al., Z.Phys. A351 (1995) 107

  5. εc(q) Dielectric Function Theory v= c= 1 self-consistent charge formfactor znumber of bound electrons kTFThomas-Fermi wave number valence-electron dielectric function P(q) Lindhard RPA polarizability G(q) local field correction core-electron dielectric function from f-sum rule K. Czerski et al., Europhys. Lett. 68 (2004) 363

  6. Li Be Al Zr Pd Ta C Enhanced Electron Screening Effect II Results D-D Potential dielectric-function theory K. Czerski et al., Europhys. Lett. 68 (2004) 363

  7. Comparison of Experimental Results

  8. Proposal I Experimental: new measurements under ultra-high vacuum conditions looking for the target material and temperature dependence Theoretical: improvement of the dielectric-function theory polarization of deuterons within the crystal lattice Collaboration University of Szczecin: Prof. K. Czerski, Prof. A. Bechler, Ż. Wyrwał-Artyszuk Technical University of Berlin: Prof. P. Heide, Prof. G. von Oppen, Dr. A. Huke Humboldt University of Berlin: Prof. H. Winter, Dr. M. Busch

  9. d + d d + d 3He + n 3H + p Ta a2 Angular Distribution

  10. Energy Spectra

  11. Suppression of Neutron Channel 16 transition matrix elements s, p und d waves channel spin S = 0,1,2 experimental results can be explained if S = 0 Polarisation von Deuteronen ? A. Huke, K. Czerski, accepted Eur. Phys. J. A

  12. Proposal II Experimental: direct measurement of the neutron channel energy and target material dependence of the effect Theoretical: search for a theoretical explanation of the deuteron polarization within the crystal lattice Collaboration University of Szczecin: Prof. K. Czerski, Prof. R. Fedaruk, Prof. J. Stelmach Technical University of Berlin: Prof. P. Heide, Dr. A. Huke, L. Martin Humboldt University of Berlin: Prof. H. Winter, Dr. M. Busch

More Related