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Limiting Temperatures of Spherical Shock Wave Implosion
KTH, School of Engineering Sciences (SCI), Mechanics.ORCID iD: 0000-0003-1475-5351
KTH, School of Engineering Sciences (SCI), Mechanics.
2016 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 116, no 1, 014501Article in journal (Refereed) PublishedText
Abstract [en]

Spherical shock wave implosion in argon is studied both theoretically and experimentally. It is shown that as the strength of the converging shock increases the nonideal gas effects become dominant and govern the evolution of thermal and transport gas properties limiting the shock acceleration, lowering the gas adiabatic index and the achievable energy density at the focus. Accounting for multiple-level ionization, excitation, Coulomb interaction and radiation effects, the limiting equilibrium temperatures to be achieved during the shock implosion are estimated. Focal temperatures of the order of 30 000 K are measured in experiments where converging spherical shock waves are created using a conventional gas-dynamic shock tube facility.

Place, publisher, year, edition, pages
American Physical Society , 2016. Vol. 116, no 1, 014501
Keyword [en]
IONIZATION, ARGON, STABILITY, PLASMA, GASES
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-181361DOI: 10.1103/PhysRevLett.116.014501ISI: 000367677300001ScopusID: 2-s2.0-84954541374OAI: oai:DiVA.org:kth-181361DiVA: diva2:900852
Funder
Swedish Research Council
Note

QC 20160205

Available from: 2016-02-05 Created: 2016-02-01 Last updated: 2016-02-05Bibliographically approved

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