Heating of metals in swift heavy ion tracks by electron–ion energy exchange

1998 ◽  
Vol 146 (1-4) ◽  
pp. 137-141 ◽  
Author(s):  
A.E. Volkov ◽  
V.A. Borodin
Keyword(s):  
Energy Exchange ◽  
Heavy Ion ◽  
Ion Energy ◽  
Ion Tracks ◽  
Swift Heavy Ion

scholarly journals Reconciling Anomalously Fast Heating Rate in Ion Tracks with Low Electron-Phonon Coupling

2021 ◽  
Author(s):  
Nikita Medvedev ◽  
Alexander E. Volkov
Keyword(s):  
Energy Transfer ◽  
Energy Exchange ◽  
Energy Surface ◽  
Heavy Ion ◽  
Phonon Coupling ◽  
Fast Heating ◽  
Ion Tracks ◽  
Swift Heavy Ion ◽  
Electron Phonon Coupling ◽  
Electrons And Ions

Abstract Formation of swift heavy ion tracks requires extremely fast energy transfer between excited electrons and a lattice. However, electron-phonon energy exchange is too slow, as known from laser-irradiation experiments and calculations. We resolve this contradiction noticing that electron-phonon coupling is not the sole mechanism of energy exchange between electrons and ions: heating of electrons also alters potential energy surface of atoms, accelerating them and increasing their kinetic energy.

Energetic Ion Irradiation as Advanced Process for Functionalization of Silicon Nanocrystals in a SiO2 Matrix

2012 ◽  
Vol 18-19 ◽  
pp. 241-246 ◽  
Author(s):  
I.V. Antonova ◽  
V.A. Skuratov ◽  
I. Balberg
Keyword(s):  
Silicon Nanocrystals ◽  
Ion Irradiation ◽  
Thick Layer ◽  
Heavy Ion ◽  
Photoluminescence Properties ◽  
Ion Energy ◽  
Ion Tracks ◽  
Heavy Ion Irradiation ◽  
Swift Heavy Ion ◽  
Silicon Nanocrystallites

A physical picture of swift heavy ion irradiation effects on ensembles of silicon nanocrystallites (NCs) embedded in a dielectric SiO2matrix is given following our study of the experimental investigation of structural, electrical and photoluminescence properties of that system We found that ion irradiation can drastically change the structure of the layer by forming an ordered NC chains along the ion tracks in the 400-1000 nm thick layer. The ion energy and dose are then the main tools for functionalization of our system, from changing the size and the concentration of the NCs, to managing the optical and electrical properties.

Multi-scale Investigation of Heterogeneous Swift Heavy Ion Tracks in Stannate Pyrochlore

2021 ◽  
Author(s):  
Eric O'Quinn ◽  
Cameron Tracy ◽  
William F. Cureton ◽  
Ritesh Sachan ◽  
Joerg C. Neuefeind ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Heavy Ion ◽  
X Ray Diffraction ◽  
X Ray ◽  
Structural Modifications ◽  
Multi Scale ◽  
Ion Tracks ◽  
Swift Heavy Ion ◽  
Transmission Electron

Er2Sn2O7 pyrochlore was irradiated with swift heavy Au ions (2.2 GeV), and the induced structural modifications were systematically examined using complementary characterization techniques including transmission electron microscopy (TEM), X-ray diffraction...

Structural analysis of simulated swift heavy ion tracks in quartz

2014 ◽  
Vol 326 ◽  
pp. 289-292 ◽  
Author(s):  
Aleksi A. Leino ◽  
Szymon L. Daraszewicz ◽  
Olli H. Pakarinen ◽  
Flyura Djurabekova ◽  
Kai Nordlund ◽  
...  
Keyword(s):  
Structural Analysis ◽  
Heavy Ion ◽  
Ion Tracks ◽  
Swift Heavy Ion

Microstructure of Swift Heavyion Irradiated MgAl204 Spinel

1998 ◽  
Vol 540 ◽  
Author(s):  
S.J. Zinkle ◽  
Hj. Matzke ◽  
V.A. Skuratov
Keyword(s):  
Heavy Ions ◽  
Room Temperature ◽  
Heavy Ion ◽  
Elastic Collision ◽  
Plan View ◽  
Volumetric Expansion ◽  
Ion Tracks ◽  
Swift Heavy Ion ◽  
Transmission Electron ◽  
Temperature Irradiation

AbstractPlan view and cross-section transmission electron microscopy was used to investigate the microstructure of magnesium aluminate spinel (MgAl2O4) following room temperature irradiation with either 430 MeV Kr, 614 MeV Xe, or 72 MeV I ions. The fluences ranged from 1×1016/m2 (single track regime) to 1×1020/m2. Destruction of the ordered spinel crystal structure on both the anion and cation sublattices was observed in the ion tracks at low fluences. At intermediate fluences, the overlapping ion tracks induced the formation of a new metastable crystalline phase. Amorphization with a volumetric expansion of ∼35% was observed in spinel irradiated with swift heavy ions (electronic stopping powers >7 keV/nm) at fluences above 1×1019/m2. These results demonstrate that swift heavy ion radiation can induce microstructural changes not achievable with conventional elastic collision irradiation at comparable temperatures.

scholarly journals The microscopic model of material excitation in swift heavy ion tracks

2013 ◽  
Vol 10 (4) ◽  
pp. 697-700 ◽  
Author(s):  
S. A. Gorbunov ◽  
N. A. Medvedev ◽  
P. N. Terekhin ◽  
A. E. Volkov
Keyword(s):  
Heavy Ion ◽  
Microscopic Model ◽  
Ion Tracks ◽  
Swift Heavy Ion
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