Formation of dislocations in LiF irradiated with 3He and 4He ions
Source abstract
Abstract
Abstract Influence of the irradiation with 13.5 MeV 3He and 5 MeV 4He ions on the micro-structure and mechanical properties of LiF single crystals was studied. The depth profiles of nanoindentation, dislocation mobility, selective chemical etching and photoluminescence served for the characterization of damage. Strong ion-induced increase of hardness and decrease in dislocation mobility at the stage of track overlapping due to accumulation of dislocations and other extended defects was observed. At high fluences (1015 ions/cm2) the hardness saturates at about 3.5 GPa (twofold increase in comparison to a virgin crystal) thus confirming high efficiency of light projectiles in modifications of structure and properties. The effects of ion-induced increase of hardness and decrease of dislocation mobility are observed also beyond the ion range and possible mechanisms of such damage are discussed.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Ion-surface interactions and analysis · Metal and Thin Film Mechanics · Diamond and Carbon-based Materials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (28)
Show source-provided references
1. Experimental study of point-defect creation in high-energy heavy ion tracks10.1103/PhysRevB.41.3943 ↗
2. Damage and track morphology in LiF crystals irradiated with GeV ions10.1103/PhysRevB.58.11232 ↗
3. Single ion induced surface nanostructures: a comparison between slow highly charged and swift heavy ions10.1088/0953-8984/23/39/393001 ↗
4. A review of colour center and nanostructure creation in LiF under heavy ion irradiation10.1088/0031-8949/90/9/094011 ↗
5. MeV–GeV ion induced dislocation loops in LiF crystals10.1016/j.nimb.2013.10.043 ↗
6. Nanostructuring and strengthening of LiF crystals by swift heavy ions: AFM, XRD and nanoindentation study10.1016/j.nimb.2011.08.042 ↗
7. A Study of interstitial clusters in irradiated alkali halides using direct electron microscopy
8. Radiation-induced stored energy in rock salt10.1016/0022-3115(94)90301-8 ↗
9. Formation of dislocations and hardening of LiF under high-dose irradiation with 5-21 MeV 12C ions10.1007/s00339-017-0934-1 ↗
10. Energy loss effect on color center creation in LiF crystals under irradiation with 12C, 14N, 40Ar, 84Kr, and 130Xe ions10.1016/j.nimb.2015.07.051 ↗
11. Dislocation etch pit formation in lithium fluoride10.1063/1.1723277 ↗
12. Swift-ion-induced hardening andreduction of dislocation mobility in LiF crystals10.1088/0022-3727/41/7/074008 ↗
13. Regel · Phys. Status Solidi · 1982 · 73 · 25510.1002/pssa.2210730133 ↗
14. Damage profiles in alkali halides irradiated with high-energy heavy ions10.1016/0168-583X(89)90883-5 ↗
15. Color centers beyond the swift ion ranges in LiF crystals10.1016/j.nimb.2012.05.012 ↗
16. Ziegler · 1985
17. An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments10.1557/JMR.1992.1564 ↗
18. Dislocations, point-defect clusters, and cavities in neutron irradiated LiF crystals10.1063/1.1723322 ↗
19. Depth-resolved photo- and ionoluminescence of LiF and Al2O310.1016/j.nimb.2011.12.037 ↗
20. Fluorescent detection of single tracks of alpha particles using lithium fluoride crystals10.1016/j.nimb.2016.12.003 ↗
21. F center creation and aggregation in LiF crystals irradiated with 14N, 40Ar, and 84Kr ions10.1016/j.nimb.2013.09.026 ↗
22. Creation of nanosize defects in LiF crystals under 5- and 10-MeV Au ion irradiation at room temperature10.1103/PhysRevB.76.054114 ↗
23. Channeling of MeV projectiles in diatomic ionic crystals10.1002/pssa.2210080109 ↗
24. Evaluated nuclear data file (ENDF), https://www-nds.iaea.org.
25. ENSDF: Evaluated nuclear structure data, https://www.nndc.bnl.
26. Optical spectroscopy and imaging of colour centres in lithium fluoride crystals and thin films irradiated by 3 MeV proton beams10.1016/j.nimb.2013.09.036 ↗
27. Nanostructuring and hardening of LiF crystals irradiated with 3–15 MeV Au ions10.1007/s00339-011-6387-z ↗
28. Hardening and long-range stress formation in lithium fluoride induced by energetic ions10.1016/S0168-583X(02)02001-3 ↗