9 June 2006 Erasure of elementary holograms in LiNbO3:Fe by neutron irradiation
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Proceedings Volume 6252, Holography 2005: International Conference on Holography, Optical Recording, and Processing of Information; 62520N (2006) https://doi.org/10.1117/12.676860
Event: Holography 2005: International Conference on Holography, Optical Recording, and Processing of Information, 2005, Varna, Bulgaria
Abstract
Experimental studies on the erasure effect of thermal neutron irradiation on elementary photorefractive hologram in LiNbO3:Fe single crystals are reported. This phenomenon results from the large effective cross-section of 6Li for thermal neutrons and from the large number of the electrons excited to the conduction band by the kinetic energy that is released during the neutron generated α-decay of 6Li nuclei. The excited electrons decrease the electric space-charge field of the previously recorded holographic grating and decrease its diffraction efficiency. The sensitivity threshold of the effect is better than 53 mSv (4×109 cm-2 fluence) at neutron energy of 0. 17 eV. Discussion of potential application ofthe phenomenon is also given.
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Gabor Mandula, Gabor Mandula, Romano A. Rupp, Romano A. Rupp, M. Balaskó, M. Balaskó, "Erasure of elementary holograms in LiNbO3:Fe by neutron irradiation", Proc. SPIE 6252, Holography 2005: International Conference on Holography, Optical Recording, and Processing of Information, 62520N (9 June 2006); doi: 10.1117/12.676860; https://doi.org/10.1117/12.676860
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