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Title: Cascade morphology transition in bcc metals

Journal Article · · Journal of Physics. Condensed Matter
 [1];  [2];  [2];  [3];  [2];  [1]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  2. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Nuclear Engineering
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

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 similar to 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:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1336581
Journal Information:
Journal of Physics. Condensed Matter, Vol. 27, Issue 22; ISSN 0953-8984
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 33 works
Citation information provided by
Web of Science

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Cited By (6)

Shockwave generates < 100 > dislocation loops in bcc iron journal November 2018
A tungsten-rhenium interatomic potential for point defect studies journal May 2018
Model evaluations of surface modification by energetic incident carbon atoms on graphene coated copper electrodes journal January 2019
Approach to local thermodynamic equilibrium and the evolution to a glassy core following neutron/ion radiation impact journal August 2018
Effect of vacancies on the nucleation of Cr precipitates at grain boundary in α-Fe journal August 2019
Shape Stability of Metallic Nanoplates: A Molecular Dynamics Study journal November 2019

Figures / Tables (8)


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