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Rahm M. Electronegativity at the Shock Front. PROPELLANTS EXPLOSIVES PYROTECHNICS 2022. [DOI: 10.1002/prep.202100306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Martin Rahm
- Department of Chemistry and Chemical Engineering Chalmers University of Technology Kemigården 4 SE-412 96 Gothenburg Sweden
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Escauriza EM, Duarte JP, Chapman DJ, Rutherford ME, Farbaniec L, Jonsson JC, Smith LC, Olbinado MP, Skidmore J, Foster P, Ringrose T, Rack A, Eakins DE. Collapse dynamics of spherical cavities in a solid under shock loading. Sci Rep 2020; 10:8455. [PMID: 32439927 PMCID: PMC7242352 DOI: 10.1038/s41598-020-64669-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 04/09/2020] [Indexed: 01/31/2023] Open
Abstract
Extraordinary states of highly localised pressure and temperature can be generated upon the collapse of impulsively driven cavities. Direct observation of this phenomenon in solids has proved challenging, but recent advances in high-speed synchrotron radiography now permit the study of highly transient, subsurface events in real time. We present a study on the shock-induced collapse of spherical cavities in a solid polymethyl methacrylate medium, driven to shock states between 0.49 and 16.60 GPa. Utilising multi-MHz phase contrast radiography, extended sequences of the collapse process have been captured, revealing new details of interface motion, material failure and jet instability formation. Results reveal a rich array of collapse characteristics dominated by strength effects at low shock pressures and leading to a hydrodynamic response at the highest loading conditions.
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Affiliation(s)
- E M Escauriza
- Department of Engineering Science, University of Oxford, Oxford, OX1 3PJ, UK.
- ESRF - The European Synchrotron, CS40220, F-38043, Grenoble, France.
- Department of Physics, Imperial College London, London, SW7 2BZ, UK.
| | - J P Duarte
- Department of Physics, Imperial College London, London, SW7 2BZ, UK
| | - D J Chapman
- Department of Engineering Science, University of Oxford, Oxford, OX1 3PJ, UK
- Department of Physics, Imperial College London, London, SW7 2BZ, UK
| | - M E Rutherford
- Department of Engineering Science, University of Oxford, Oxford, OX1 3PJ, UK
- Department of Physics, Imperial College London, London, SW7 2BZ, UK
| | - L Farbaniec
- Department of Engineering Science, University of Oxford, Oxford, OX1 3PJ, UK
- Department of Physics, Imperial College London, London, SW7 2BZ, UK
| | - J C Jonsson
- Department of Engineering Science, University of Oxford, Oxford, OX1 3PJ, UK
- Department of Physics, Imperial College London, London, SW7 2BZ, UK
| | - L C Smith
- Department of Engineering Science, University of Oxford, Oxford, OX1 3PJ, UK
- Department of Physics, Imperial College London, London, SW7 2BZ, UK
| | - M P Olbinado
- ESRF - The European Synchrotron, CS40220, F-38043, Grenoble, France
| | - J Skidmore
- First Light Fusion Ltd., Yarnton, Kidlington, OX5 1QU, UK
| | - P Foster
- First Light Fusion Ltd., Yarnton, Kidlington, OX5 1QU, UK
| | - T Ringrose
- First Light Fusion Ltd., Yarnton, Kidlington, OX5 1QU, UK
| | - A Rack
- ESRF - The European Synchrotron, CS40220, F-38043, Grenoble, France
| | - D E Eakins
- Department of Engineering Science, University of Oxford, Oxford, OX1 3PJ, UK
- Department of Physics, Imperial College London, London, SW7 2BZ, UK
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Billingsley JP, Adams CL. Application of Crystal Lattice Disintegration Criteria to Compute Minimum Shock induced reactive conditions in solid explosives and inert materials. PROPELLANTS EXPLOSIVES PYROTECHNICS 1994. [DOI: 10.1002/prep.19940190303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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