Cascade morphology transition in bcc metals
Journal Article
·
· Journal of Physics. Condensed Matter
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Univ. of Tennessee, Knoxville, TN (United States). Dept. of Nuclear Engineering
- 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
Cited by: 33 works
Citation information provided by
Web of Science
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