中子辐照擦除LiNbO3:Fe中初等全息图

International Conference on Holography, Optical Recording, and Processing of Information Pub Date : 2006-05-20 DOI:10.1117/12.676860

G. Mandula, R. Rupp, M. Balaskó

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引用次数: 1

摘要

本文报道了热中子辐照对LiNbO3:Fe单晶初等光折变全息图的擦除效应。这一现象源于6Li对热中子的有效截面大，以及6Li原子核在中子生成α-衰变过程中释放的动能将大量电子激发到导带。被激发的电子使先前记录的全息光栅的电场空间电荷场减小，使其衍射效率降低。在中子能量为0时，该效应的灵敏度阈值优于53 mSv (4×109 cm-2)。17 eV。对这一现象的潜在应用进行了讨论。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Erasure of elementary holograms in LiNbO3:Fe by neutron irradiation

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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International Conference on Holography, Optical Recording, and Processing of Information

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