Concept

Collision cascade

Related publications (77)

Synergistic effects of PKA and helium on primary damage formation in Fe-0.1%He

Molecular dynamics (MD) simulation of displacement cascades in Fe-0.1%He are used to investigate the synergistic effects of primary knock-on atoms (PKA) and He on the irradiation damage production at temperatures between 10 K and 523 K. The results indicat ...

2007

Study of cascades damage in Ni by MD with different interatomic potentials

Zhongwen Yao

Molecular dynamics (MD) simulations, performed with embedded atom potentials, are used to understand the formation of defects following displacement cascades in Ni. Different empirical potentials, presenting large differences in stacking fault energy (SFE) ...

2007

Photodissociation of Alkyl Iodides in Helium Nanodroplets I: Kinetic Energy Transfer

Marcel Drabbels, Andreas Braun

The photodissociation of (fluorinated) alkyl iodides in helium nanodroplets at a wavelength of 266 nm has been investigated by means of ion imaging techniques. It is found that a significant fraction of the created fragments escapes from the helium droplet ...

2007

Oxide dispersion strengthened steel irradiation with helium ions

Manuel Alexandre Pouchon, Wolfgang Hoffelner

Oxide dispersion strengthened (ODS) ferritic steels are investigated as possible structural material for the future generation of high temperature gas cooled nuclear reactors. ODS-steels are considered to replace other high temperature materials for tubing ...

Elsevier2006

Venus plus delta f: A bootstrap current calculation module for 3-D configurations

Wilfred Anthony Cooper, Stephan Brunner, Trach-Minh Tran

A new three-dimensional code, VENUS+delta f, for neoclassical transport calculations in nonaxisymmetric toroidal systems is presented. Numerical drift orbits from the original VENUS code and the delta f method developed for tokamak transport calculations a ...

2006

Molecular dynamics simulations of phase formation and stability in the Al(Ni) system under irradiation

Molecular dynamics simulations of displacement cascades in aluminium, aluminium-nickel solid solutions and inhomogeneous samples containing amorphous or crystalline Al3Ni precipitates are performed. It is shown that no segregation occurs inside the displac ...

2005

Ion implantation in Ni-Ti shape memory alloy thin films

The present thesis focuses on the effect of 5 MeV Ni ion irradiation on the microstructure and the thermomechanical behavior in prestrained (ε∼4%) martensitic Ti-rich NiTi thin films. At this ion energy, damage is limited to a depth of approximately 2 µm ( ...

EPFL2005

The relationship between the irradiation induced damage and the mechanical properties of single crystal Ni

Zhongwen Yao

Irradiation is known to lead to a degradation of the mechanical properties of materials. This is particularly crucial in the case of materials that will be used in the future thermonuclear fusion reactor, where extremely high irradiation doses are expected ...

EPFL2005

Enhancement of the binding energy of charged excitons in disordered quantum wires

Elyahou Kapon, Benjamin Dwir, Marc-André Dupertuis, Daniel Oberli, Klaus Leifer, Nicolas Moret

Negatively and positively charged excitons are identified in the spatially resolved photoluminescence spectra of quantum wires. We demonstrate that charged excitons are weakly localized in disordered quantum wires. As a consequence, the enhancement of the ...

2005

Sign of the state-to-state steric asymmetry of rotationally inelastic atom-molecule collisions

Marcel Drabbels

The sign of the theoretically predicted steric asymmetry S in rotational inelastic state resolved molecule–atom collisions is questioned. It is shown that the sign of the T-matrix obtained on a basis of non-oriented rotational states of the molecule depend ...

2004

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