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Title: Correlation between hot spots and 3-D defect structure in single and polycrystalline high-explosive materials

Authors:
 [1];  [1]; ;
  1. National Security Technologies, LLC. (NSTec), Mercury, NV (United States)
Publication Date:
Research Org.:
Nevada Test Site/National Security Technologies, LLC (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP) (NA-10)
OSTI Identifier:
1352283
Report Number(s):
DOE/NV/25946-3188
DOE Contract Number:
DE-AC52-06NA25946
Resource Type:
Conference
Resource Relation:
Conference: 14th Hypervelocity Impact Symposium, at the University of Kent, Canterbury, UK, April 24 to 27, 2017
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; tomography, topography, high-explosive materials

Citation Formats

Hawkins, M. Cameron, Fussell, Zachary, Tschauner, Oliver, and Smith, Jesse. Correlation between hot spots and 3-D defect structure in single and polycrystalline high-explosive materials. United States: N. p., 2017. Web.
Hawkins, M. Cameron, Fussell, Zachary, Tschauner, Oliver, & Smith, Jesse. Correlation between hot spots and 3-D defect structure in single and polycrystalline high-explosive materials. United States.
Hawkins, M. Cameron, Fussell, Zachary, Tschauner, Oliver, and Smith, Jesse. Tue . "Correlation between hot spots and 3-D defect structure in single and polycrystalline high-explosive materials". United States. doi:. https://www.osti.gov/servlets/purl/1352283.
@article{osti_1352283,
title = {Correlation between hot spots and 3-D defect structure in single and polycrystalline high-explosive materials},
author = {Hawkins, M. Cameron and Fussell, Zachary and Tschauner, Oliver and Smith, Jesse},
abstractNote = {},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 25 00:00:00 EDT 2017},
month = {Tue Apr 25 00:00:00 EDT 2017}
}

Conference:
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  • Using transmission electron microscopy techniques, we have begun a program to study cascade defects in the high-{Tc} superconductor YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}}. In situ ion irradiations in the High Voltage Electron Microscope (HVEM)-Accelerator Facility at Argonne National Laboratory were performed to simulate low dose neutron irradiation at both room temperature and 40 K. Diffraction contrast experiments performed in two-beam dark field conditions in different operating reflections indicated defect cascades with hydrostatic pressure-like strain fields. Visible cascade defect yields ranged from 0.3 {minus} 1.0, depending on incident ion mass. High resolution micrographs revealed that at least some of these cascades havemore » recrystallized regions that have rotated with respect to the surrounding lattice. Samples which were neutron irradiated to doses sufficient to produce overlapped cascades show a cellular' structure of good crystalline material surrounded by highly defective or amorphous cell walls. It is suggested that the recrystallization observed in isolated cascade defects produced by low dose ion irradiation provides the mechanism for the formation of the cellular structure at high damage levels. Correlation of microstructure with magnetic measurements of critical current density increased by neutron irradiation and electrical resistivity measurements of the superconducting to insulating transition under ion irradiation are suggested. 15 refs., 4 figs.« less
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  • No abstract prepared.