On anisotropy-modulation in energetic displacement cascades

Abstract

The report consists of two parts: First it is shown that the initial momentum anisotropy of a PKA of 3 keV is modulated into near isotropy during the collisional phase of displacement cascades using molecular dynamics simulation. Secondly in the case of a PKA of the order of 100 MeV, in which electron-bursts are produced by energetic recoil-atoms, a possible new mechanism of defect-production caused by such electron-bursts is proposed.

Key Words:

• atomic displacement cascade
• molecular dynamical simulation
• anisotropy-modulation
• electronic stopping power
• electron-burst
• atomic displacement by electrons