Radiation Damage Theory

Golubov, S.I.; Barashev, A. V.; Stoller, R.E.

doi:10.1016/b978-0-08-056033-5.00029-x

Cited by 85 publications

(70 citation statements)

References 133 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At the moment this theory is the most promising candidate to provide the basis for predictive modeling of materials behavior under irradiation. According to [3], in the commercially important case of cascade-type damage (neutron, ions) and for a material with a low dislocation density, d, the steady state rate of swelling S is independent on the irradiation dose  and can be expressed as:…”

Section: Introductionmentioning

confidence: 99%

“…Any practically useful prediction that exceeds available experimental data should be a) based on the best available theory and b) realized as a computational approach through the models of necessary scales. The modern approach to generalized radiation damage theory, described in [3], is able to explain qualitatively and, in many cases, quantitatively radiation-induced phenomena such as the effects of recoil energy spectra and grain boundaries on swelling; void ordering and void lattice formation; radiation induced segregation and radiation growth in anisotropic materials [3][4][5][6][7][8][9][10]. At the moment this theory is the most promising candidate to provide the basis for predictive modeling of materials behavior under irradiation.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The role of nickel in radiation damage of ferritic alloys

et al. 2015

View full text Add to dashboard Cite

According to the modern theory damage evolution under neutron irradiation depends on the fraction of self-interstitial atoms (SIAs) produced in the form of one-dimensionally glissile clusters. These clusters, having a low interaction cross-section with other defects, are absorbed mainly by grain boundaries and dislocations creating the so-called production bias. It is known empirically that addition of certain alloying elements influence many radiation effects, including swelling, however the mechanisms are unknown in many cases. In this paper we report the results of an extensive multi-technique atomistic level modeling study of SIA clusters mobility in bcc Fe-Ni alloys. We have found that Ni interacts strongly with the periphery of clusters affecting their mobility. The total effect is defined by the number of Ni atoms interacting with the cluster at the same time and can be significant even in low-Ni alloys. Thus 1nm (37SIAs) cluster is practically immobile at T<500K in the Fe-0.8at.% Ni alloy. Increasing cluster size and Ni content enhance cluster immobilization. This effect should have quite broad consequences in void swelling, matrix damage accumulation and radiation induced hardening and the results obtained help to better understand and predict the effects of radiation in Fe-Ni ferritic alloys.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The role of nickel in radiation damage of ferritic alloys

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Recently the role of self-interstitial atom clusters and their one-dimensional mobility, as well as a production bias of isolated vacancies vs. interstitials and their clusters, has been clarified in the problem of irradiation defect growth. Simulations show the metastability of small-vacancy clusters, up to about 52 vacancies, whereas ion beam irradiation experiments give very different results [23] [24]. The role of point-defect cluster evolution in space and time varying local environments again examplifies the emphasis on self-organized defects in MSS.…”

Section: Radiation Damage In Nuclear Materialsmentioning

confidence: 99%

“…The theory of radiation damage in matter has a long history of development based on rateequation formulations with various approximations for sources and sinks; essentially it is also a form of transition-state theory with detailed account of the point defect concentrations [24]. Recently the role of self-interstitial atom clusters and their one-dimensional mobility, as well as a production bias of isolated vacancies vs. interstitials and their clusters, has been clarified in the problem of irradiation defect growth.…”

Section: Radiation Damage In Nuclear Materialsmentioning

confidence: 99%

Materials aging at the mesoscale: Kinetics of thermal, stress, radiation activations

Short

Yip

2015

Current Opinion in Solid State and Materials Science

View full text Add to dashboard Cite

“…If the system time evolution goes beyond 100 ps, the kinetic lattice Monte-Carlo method can also be used (Rong et al, 2007). However, if the time scale exceeds several hundreds of nanoseconds (also called the annealing stage), the rate theory (Maksimov and Ryazanov, 1980;Golubov et al, 2012) has to be called in for studying the steady-state properties of the surviving defects (up to hours or days or even months).…”

Section: Introductionmentioning

confidence: 99%

Multi-Timescale Microscopic Theory for Radiation Degradation of Electronic and Optoelectronic Devices

Huang¹,

Gao²,

Cardimona³

et al. 2015

American Journal of Space Science

View full text Add to dashboard Cite

A multi-timescale hybrid model is proposed to study microscopically the degraded performance of electronic devices, covering three individual stages of radiation effects studies, including ultra-fast displacement cascade, intermediate defect stabilization and cluster formation, as well as slow defect reaction and migration. Realistic interatomic potentials are employed in molecular-dynamics calculations for the first two stages up to 100 ns as well as for the system composed of layers with thicknesses of hundreds of times the lattice constant. These quasi-steady-state results for individual layers are input into a ratediffusion theory as initial conditions to calculate the steady-state distribution of point defects in a mesoscopic-scale layered-structure system, including planar biased dislocation loops and spherical neutral voids, on a much longer time scale. Assisted by the density-functional theory for specifying electronic properties of point defects, the resulting spatial distributions of these defects and clusters are taken into account in studying the degradation of electronic and optoelectronic devices, e.g., carrier momentum-relaxation time, defect-mediated non-radiative recombination, defect-assisted tunneling of electrons and defect or charged-defect Raman scattering as well. Such theoretical studies are expected to be crucial in fully understanding the physical mechanism for identifying defect species, performance degradations in field-effect transistors, photo-detectors, light-emitting diodes and solar cells and in the development of effective mitigation methods during their microscopic structure design stages.

show abstract

Radiation Damage Theory

Cited by 85 publications

References 133 publications

The role of nickel in radiation damage of ferritic alloys

The role of nickel in radiation damage of ferritic alloys

Materials aging at the mesoscale: Kinetics of thermal, stress, radiation activations

Multi-Timescale Microscopic Theory for Radiation Degradation of Electronic and Optoelectronic Devices

Contact Info

Product

Resources

About