Pre-Compressed Targets for Gas Gun Studies

Technical Report · Tue Sep 01 04:00:00 EDT 2015

DOI:https://doi.org/10.2172/1504849· OSTI ID:1504849

Seagle, Christopher T. ^[1]; Lopez, Andrew J. ^[1]

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1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

This work developed the capability for pre-compressing targets for Hugoniot measurements utilizing gas gun driven flyer plates. Initial condition control, such as pre-compression, allows access to states off the principal Hugoniot and in the case of highly compressible materials, the locus of shock states may be well off (significantly denser than) the principal Hugoniot even for relatively modest (~100's MPa) initial pressures. The design and operation of the pre-compression target hardware will be discussed in relation to functionality and design considerations for dynamic testing. Capability for loading of super critical gases and gas mixtures has been successfully demonstrated and dynamic hypervelocity impacts of helium were tested. Example loading of supercritical alcohol (ethanol) will is presented in the context of previous impact studies of initially ambient quiescent liquid. Advantages and limitations of the system are discussed in the context accessing highly compressed states.

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States); Sandia National Laboratories (SNL-CA), Livermore, CA (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 1504849
• Report Number(s): SAND--2015-8118; 603799
• Country of Publication: United States
• Language: English

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