| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Radiation Effects in Metals and Ceramics
|
| Presentation Title |
Reassessment of TRIM Simulations for Damage Production in Materials |
| Author(s) |
William J. Weber, Yanwen Zhang |
| On-Site Speaker (Planned) |
William J. Weber |
| Abstract Scope |
The TRIM code is commonly applied to predict radiation damage dose, and there is controversy over the inconsistencies (factor of 2) in determining atomic displacement numbers using full-cascade and quick (modified Kinchin–Pease) TRIM modes. Full-cascade TRIM simulations are consistent with full-cascade simulations using other modern Monte Carlo codes with the same ZBL scattering cross sections and SRIM electronic stopping powers. Furthermore, the full-cascade TRIM simulations agree with numerical solutions for displacement functions determined from coupled integro-differential equations, which supports the accuracy of full-cascade TRIM simulations. The discrepancies between full-cascade and quick TRIM simulations are due in part to misunderstandings regarding the derivation of the modified Kinchin-Pease model and limitations of the energy partition model employed, which often provides inaccurate predictions (factor of 2) of the energy loss by recoils to electrons and is not valid for polyatomic materials. This work was supported by the U.S. DOE, BES, MSED. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |