Search for Superscreening Effects in a Superconductor
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2013
Authors
Ujić, PredragSantos, F. de Oliveira
Lewitowicz, Marek
Achouri, Lynda N.
Assie, Marlène
Bastin, Beyhan
Borcea, Catalin
Borcea, Ruxandra
Buta, Anna
Coc, A.
de France, Gilles
Kamalou, O.
Kiener, Jürgen K.
Lepailleur, A.
Meot, V.
Pautrat, A.
Saint Laurent, M. G.
Sorlin, Olivier
Stanoiu, Mihai
Tatischeff, V.
Article (Published version)
,
© 2013 American Physical Society
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The decay of O-19(beta(-)) and Ne-19(beta(+)) implanted in niobium in its superconducting and metallic phases was measured using purified radioactive beams produced by the SPIRAL GANIL facility. Half-lives and branching ratios measured in the two phases are consistent within a 1 sigma error bar. This measurement casts strong doubts on the predicted strong electron screening in a superconductor, the so-called superscreening. The measured difference in screening potential energy is 110(90) eV for Ne-19 and 400(320) eV for O-19. Precise determinations of the half-lives were obtained for O-19, 26.476(9) s, and for Ne-19, 17.254(5) s.
Source:
Physical Review Letters, 2013, 110, 3, 032501-Funding / projects:
- Nuclear physics, methods and application (RS-MESTD-Basic Research (BR or ON)-171018)
- European Commission within the FP6 through I3-EURONS [RII3-CT-2004-506065]
- French-Romanian Collaboration Agreement IN2P3-IFIN-HH Bucharest [03-33]
- Region Normandie
- French-Serbian CNRS-MSCI Collaboration Agreement [20505]
Note:
- Preprint version available at: https://arxiv.org/pdf/1212.3579.pdf
DOI: 10.1103/PhysRevLett.110.032501
ISSN: 0031-9007
PubMed: 23373914
WoS: 000313422400003
Scopus: 2-s2.0-84872312216
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VinčaTY - JOUR AU - Ujić, Predrag AU - Santos, F. de Oliveira AU - Lewitowicz, Marek AU - Achouri, Lynda N. AU - Assie, Marlène AU - Bastin, Beyhan AU - Borcea, Catalin AU - Borcea, Ruxandra AU - Buta, Anna AU - Coc, A. AU - de France, Gilles AU - Kamalou, O. AU - Kiener, Jürgen K. AU - Lepailleur, A. AU - Meot, V. AU - Pautrat, A. AU - Saint Laurent, M. G. AU - Sorlin, Olivier AU - Stanoiu, Mihai AU - Tatischeff, V. PY - 2013 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5262 AB - The decay of O-19(beta(-)) and Ne-19(beta(+)) implanted in niobium in its superconducting and metallic phases was measured using purified radioactive beams produced by the SPIRAL GANIL facility. Half-lives and branching ratios measured in the two phases are consistent within a 1 sigma error bar. This measurement casts strong doubts on the predicted strong electron screening in a superconductor, the so-called superscreening. The measured difference in screening potential energy is 110(90) eV for Ne-19 and 400(320) eV for O-19. Precise determinations of the half-lives were obtained for O-19, 26.476(9) s, and for Ne-19, 17.254(5) s. T2 - Physical Review Letters T1 - Search for Superscreening Effects in a Superconductor VL - 110 IS - 3 SP - 032501 DO - 10.1103/PhysRevLett.110.032501 ER -
@article{ author = "Ujić, Predrag and Santos, F. de Oliveira and Lewitowicz, Marek and Achouri, Lynda N. and Assie, Marlène and Bastin, Beyhan and Borcea, Catalin and Borcea, Ruxandra and Buta, Anna and Coc, A. and de France, Gilles and Kamalou, O. and Kiener, Jürgen K. and Lepailleur, A. and Meot, V. and Pautrat, A. and Saint Laurent, M. G. and Sorlin, Olivier and Stanoiu, Mihai and Tatischeff, V.", year = "2013", abstract = "The decay of O-19(beta(-)) and Ne-19(beta(+)) implanted in niobium in its superconducting and metallic phases was measured using purified radioactive beams produced by the SPIRAL GANIL facility. Half-lives and branching ratios measured in the two phases are consistent within a 1 sigma error bar. This measurement casts strong doubts on the predicted strong electron screening in a superconductor, the so-called superscreening. The measured difference in screening potential energy is 110(90) eV for Ne-19 and 400(320) eV for O-19. Precise determinations of the half-lives were obtained for O-19, 26.476(9) s, and for Ne-19, 17.254(5) s.", journal = "Physical Review Letters", title = "Search for Superscreening Effects in a Superconductor", volume = "110", number = "3", pages = "032501", doi = "10.1103/PhysRevLett.110.032501" }
Ujić, P., Santos, F. d. O., Lewitowicz, M., Achouri, L. N., Assie, M., Bastin, B., Borcea, C., Borcea, R., Buta, A., Coc, A., de France, G., Kamalou, O., Kiener, J. K., Lepailleur, A., Meot, V., Pautrat, A., Saint Laurent, M. G., Sorlin, O., Stanoiu, M.,& Tatischeff, V.. (2013). Search for Superscreening Effects in a Superconductor. in Physical Review Letters, 110(3), 032501. https://doi.org/10.1103/PhysRevLett.110.032501
Ujić P, Santos FDO, Lewitowicz M, Achouri LN, Assie M, Bastin B, Borcea C, Borcea R, Buta A, Coc A, de France G, Kamalou O, Kiener JK, Lepailleur A, Meot V, Pautrat A, Saint Laurent MG, Sorlin O, Stanoiu M, Tatischeff V. Search for Superscreening Effects in a Superconductor. in Physical Review Letters. 2013;110(3):032501. doi:10.1103/PhysRevLett.110.032501 .
Ujić, Predrag, Santos, F. de Oliveira, Lewitowicz, Marek, Achouri, Lynda N., Assie, Marlène, Bastin, Beyhan, Borcea, Catalin, Borcea, Ruxandra, Buta, Anna, Coc, A., de France, Gilles, Kamalou, O., Kiener, Jürgen K., Lepailleur, A., Meot, V., Pautrat, A., Saint Laurent, M. G., Sorlin, Olivier, Stanoiu, Mihai, Tatischeff, V., "Search for Superscreening Effects in a Superconductor" in Physical Review Letters, 110, no. 3 (2013):032501, https://doi.org/10.1103/PhysRevLett.110.032501 . .