dc.contributor.author | Kotomin, Eugene | |
dc.contributor.author | Kuzovkov, Vladimir | |
dc.contributor.author | Popov, Anatoli | |
dc.contributor.author | Maier, Joachim | |
dc.contributor.author | Vila, Rafael | |
dc.date.accessioned | 2020-10-02T11:10:16Z | |
dc.date.available | 2020-10-02T11:10:16Z | |
dc.date.issued | 2018 | |
dc.identifier.issn | 1089-5639 | |
dc.identifier.uri | https://dspace.lu.lv/dspace/handle/7/52629 | |
dc.description | The authors thanks A. Ch. Lushchik, M. Izerrouken, and V. Lisitsyn for stimulating discussions. This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euroatom research and training programme 2014-2018 under Grant Agreement No. 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission. R.V. acknowledges the financial support by the MEIC (Ministerio de Economa, Industria y Competitivad; Project ENE2015-70300-C3-1-R). The calculations were performed using facilities of the Stuttgart Supercomputer Center (Project DEFTD 12939). | en_US |
dc.description.abstract | The annealing kinetics of the primary electronic F-type color centers (oxygen vacancies with trapped one or two electrons) is analyzed for three ionic materials (Al2O3, MgO, and MgF2) exposed to intensive irradiation by electrons, neutrons, and heavy swift ions. Phenomenological theory of diffusion-controlled recombination of the F-type centers with much more mobile interstitial ions (complementary hole centers) allows us to extract from experimental data the migration energy of interstitials and pre-exponential factor of diffusion. The obtained migration energies are compared with available first-principles calculations. It is demonstrated that with the increase of radiation fluence both the migration energy and pre-exponent are decreasing in all three materials, irrespective of the type of irradiation. Their correlation satisfies the Meyer-Neldel rule observed earlier in glasses, liquids, and disordered materials.The origin of this effect is discussed. This study demonstrates that in the quantitative analysis of the radiation damage of real materials the dependence of the defect migration parameters on the radiation fluence plays an important role and cannot be neglected. | en_US |
dc.description.sponsorship | Euroatom research and training programme 2014-2018 under Grant Agreement No. 633053; Ministerio de Economa, Industria y Competitivad; Project ENE2015-70300-C3-1-R; Institute of Solid State Physics, University of Latvia as the Center of Excellence has received funding from the European Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement No. 739508, project CAMART² | en_US |
dc.language.iso | eng | en_US |
dc.publisher | American Chemical Society | en_US |
dc.relation | info:eu-repo/grantAgreement/EC/H2020/739508/EU/Centre of Advanced Material Research and Technology Transfer/CAMART² | en_US |
dc.relation.ispartofseries | Journal of Physical Chemistry A;122 (1) | |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | Research Subject Categories::NATURAL SCIENCES:Physics | en_US |
dc.title | Anomalous Kinetics of Diffusion-Controlled Defect Annealing in Irradiated Ionic Solids | en_US |
dc.type | info:eu-repo/semantics/article | en_US |
dc.identifier.doi | 10.1021/acs.jpca.7b10141 | |