Study of Neutron Induced Defects in Ceramics using the GiPS Facility

16th International Conference on Positron Annihilation

May-Tal Beck, S.^1 ; Butterling, M.^2 ; Anwand, W.^2 ; Beck, A.^1 ; Wagner, A.^2 ; Brauer, G.^2 ; Ocherashvili, A.^1 ; Israelashvili, I.^1 ; Hen, O.^3

Physics Department, NRCN, PO Box 9001, Beer-Sheva, Israel^1

Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany^2

School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv 69978, Israel^3

关键词: Fluences;    Induced defects;    Irradiated samples;    Irradiation Damage;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/443/1/012076/pdf
DOI  :  10.1088/1742-6596/443/1/012076

来源: IOP

【 摘 要 】

Preliminary results are presented from a study of neutron irradiation damage in Sapphire and B4C, produced with a fluence of 6×1018n/cm2and ∼1015n/cm2, respectively. Measurements were performed at the GiPS facility and the SPONSOR beam at HZDR, and in the PAL spectrometer at NRCN. Bulk and vacancies lifetimes were identified in the Sapphire, ∼150ps and ∼188ps, respectively, with complete trapping in the irradiation induced vacancies. Irradiation damage in B4C found to be limited to the surface. A single lifetime of ∼166ps was measured in both irradiated and non-irradiated samples, and was associated with the bulk.