Cascade morphology transition in bcc metals
Journal Article
·
· Journal of Physics: Condensed Matter, 27(22):Article No. 225402
Energetic atom collisions in solids induce shockwaves with complex morphologies. In this paper, we establish the existence of a morphological transition in such cascades. The order parameter of the morphology is defined as the exponent, $$b$$, in the defect production curve as a function of cascade energy ($$N_F$$$$ \sim$$$$E_{MD}^b$$). Response of different bcc metals can be compared in a consistent energy domain when the energy is normalized by the transition energy, $$\mu$$, between the high- and the low-energy regime. Using Cr, Fe, Mo and W data, an empirical formula of $$\mu$$ as a function of displacement threshold energy, $$E_d$$, is presented for bcc metals.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1182917
- Report Number(s):
- PNNL-SA-101067; AT2030110
- Journal Information:
- Journal of Physics: Condensed Matter, 27(22):Article No. 225402, Journal Name: Journal of Physics: Condensed Matter, 27(22):Article No. 225402
- Country of Publication:
- United States
- Language:
- English
Similar Records
Cascade morphology transition in bcc metals
First Principles Calculations of Helium Solution Energies in BCC Transition Metals
Accurate atomistic simulations of the Peierls barrier and kink-pair formation energy for {lt}111{gt} screw dislocations in bcc-Mo
Journal Article
·
Mon May 18 00:00:00 EDT 2015
· Journal of Physics. Condensed Matter
·
OSTI ID:1182917
+3 more
First Principles Calculations of Helium Solution Energies in BCC Transition Metals
Conference
·
Tue Jul 01 00:00:00 EDT 2008
·
OSTI ID:1182917
Accurate atomistic simulations of the Peierls barrier and kink-pair formation energy for {lt}111{gt} screw dislocations in bcc-Mo
Conference
·
Fri May 23 00:00:00 EDT 1997
·
OSTI ID:1182917