Radiation damage induced in Al2O3 single crystal sequentially irradiated with reactor neutrons and 90 MeV Xe ions

被引：11
|
作者：
Zirour, H. [1 ]
Izerrouken, M. [2 ]
Sari, A. [3 ]
机构：
[1] USTHB, Fac Phys, BP 32, Algiers, Algeria
[2] Ctr Rech Nucl Draria, BP 43, Algiers, Algeria
[3] Ctr Rech Nucl Berine, BP 108, Ain Oussara, Djelfa, Algeria
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2016年 / 377卷
关键词：
Nuclear materials; Swift heavy ions; Fast neutrons; Radiation damage; Phonon; Raman; X-ray diffraction; FTIR; Amorphization; SWIFT HEAVY-IONS; ALUMINUM-OXIDE; SAPPHIRE; RAMAN; CERAMICS; STRESS; PHOTOLUMINESCENCE; AMORPHIZATION; SPECTROSCOPY; CORUNDUM;
D O I：
10.1016/j.nimb.2016.04.003
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The present investigation reports the effect of 90 MeV Xe ion irradiation on neutron irradiated Al2O3 single crystals. Three irradiation experiments were performed, with neutrons only, 90 MeV Xe ions only and with neutrons followed by 90 MeV Xe ions. Neutron and 90 MeV Xe ion irradiations were performed at NUR research reactor, Algiers, Algeria and at GANIL accelerator, Caen, France respectively. After irradiation, the radiation damage was investigated by Raman spectroscopy, Fourier Transform Infrared Spectroscopy (FTIR), optical absorption measurements, and X-ray diffraction (XRD) techniques. Raman technique revealed that the concentration of the defects formed in Al2O3 samples subsequently irradiated with neutrons and 90 MeV Xe ions is lower than that formed in Al2O3 samples which were irradiated only with neutrons. This reveals the occurrence of ionization-induced recovery of the neutron damage. Furthermore, as revealed by XRD analysis, a new peak is appeared at about 2 theta = 38.03 degrees after irradiation at high fluence (>3 x 10(13) Xe/cm(2)). It can be assigned to the formation of new lattice plane. (C) 2016 Elsevier B.V. All rights reserved.
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收藏
页码：105 / 111
页数：7
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