High thermal neutron flux effects on structural and macroscopic properties of alkali-borosilicate glasses used as neutron guide substrate

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:374

Article

Boffy, R.¹  Peuget, S.²  Schweins, R.¹  Beaucour, J.¹  Bermejo, F. J.³ 

[1] Inst Laue Langevin, 71 Ave Martyrs,CS 20156, F-38042 Grenoble 9, France

[2] CEA, DEN, DTCD, SECM,LMPA Marcoule, F-30207 Bagnols Sur Ceze, France

[3] CSIC, Inst Estruct Mat, Serrano 119, E-20886 Madrid, Spain

关键词: Radiation damage;    Glass;    Borosilicate;    Raman;    NMR;   

DOI  :  10.1016/j.nimb.2015.10.011

来源: Elsevier

【 摘 要 】

The behaviour of four alkali-borosilicate glasses under homogeneous thermal neutron irradiation has been studied. These materials are used for the manufacturing of neutron guides which are installed in most facilities as devices to transport neutrons from intense sources such as nuclear reactors or spallation sources up to scientific instruments. Several experimental techniques such as Raman, NMR, SANS and STEM have been employed in order to understand the rather different macroscopic behaviour under irradiation of materials that belong to a same glass family. The results have shown that the remarkable glass shrinking observed for neutron doses below 0.5.10(18) n/cm(2) critically depends upon the presence of domains where silicate and borate network do not mix. (C) 2015 Elsevier B.V. All rights reserved.

【 授权许可】

Free