Open AccessDynamics of supersonic N-crowdions in bcc tungsten
Author(s) -
Ramil T. Murzaev,
Elena A. Korznikova,
С. В. Дмитриев
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1008/1/012067
Subject(s) - supersonic speed , tungsten , atom (system on chip) , excitation , atomic physics , molecular dynamics , dynamics (music) , crystal (programming language) , materials science , physics , molecular physics , chemistry , mechanics , computational chemistry , engineering , computer science , acoustics , quantum mechanics , metallurgy , programming language , embedded system
An interstitial atom placed in a close-packed atomic row of a crystal is called a crowdion. Such defects are highly mobile; they can move along the close-packed row at subsonic and even supersonic speeds, transferring mass and energy. In this paper, we consider the initial conditions for excitation of N-crowdions, in which N-atoms move simultaneously with high speed. The most efficient methods for initiating supersonic N-crowdions with N = 2 and 4 are demonstrated using molecular dynamics modelling for bcc tungsten.