Mechanical and optical response of polymethylpentene under dynamic compression

Barmore, Lauren M.; Knudson, M. D.

doi:10.1063/1.5127867

Title: Mechanical and optical response of polymethylpentene under dynamic compression

Abstract

Polymethylpentene, commonly referred to by its trade name TPX (Mitsui Chemicals, Inc.), is a thermoplastic polymer that has the potential to be a useful window material for dynamic compression experiments. For such experiments, an optically transparent or a low x-ray absorptive window is often used to maintain stress within the sample during compression. TPX can be used as a low-impedance optical and x-ray window due to its good transmittance in most parts of the electromagnetic spectrum, very low density (0.83 g/cm³), and low x-ray absorption. In dynamic compression experiments, interferometry can be used to determine the particle velocity at the interface between the sample and window. However, velocimetry measures the rate of change of the optical path length, commonly referred to as the apparent particle velocity. An experimentally determined window correction factor is needed to ascertain the actual particle velocity from the measured apparent velocity. Here, we present the results of a series of dynamic compression experiments from 1 to 31 GPa designed to characterize the mechanical and optical response of TPX, determine the range of stresses over which TPX is transparent, and determine the window correction factor. Finally, the index of refraction was found to be essentially linear inmore »« less

Authors:

^[1];

^[2]

Washington State Univ., Pullman, WA (United States). Dept. of Physics and Astronomy, and Inst. for Shock Physics
Washington State Univ., Pullman, WA (United States). Inst. for Shock Physics; Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Publication Date:: Thu Nov 14 00:00:00 EST 2019

Research Org.:: Washington State Univ., Pullman, WA (United States). Inst. for Shock Physics

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)

OSTI Identifier:: 1574369

Alternate Identifier(s):: OSTI ID: 1573520

Grant/Contract Number:: NA0002007

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Applied Physics

Additional Journal Information:: Journal Volume: 126; Journal Issue: 18; Journal ID: ISSN 0021-8979

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Barmore, Lauren M., and Knudson, M. D. Mechanical and optical response of polymethylpentene under dynamic compression.  United States: N. p., 2019. 
Web.  doi:10.1063/1.5127867.

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                    Barmore, Lauren M., & Knudson, M. D. Mechanical and optical response of polymethylpentene under dynamic compression.  United States.  https://doi.org/10.1063/1.5127867

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                    Barmore, Lauren M., and Knudson, M. D. Thu .  
"Mechanical and optical response of polymethylpentene under dynamic compression".  United States.  https://doi.org/10.1063/1.5127867.  https://www.osti.gov/servlets/purl/1574369.

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@article{osti_1574369,

  title        = {Mechanical and optical response of polymethylpentene under dynamic compression},

  author       = {Barmore, Lauren M. and Knudson, M. D.},

  abstractNote = {Polymethylpentene, commonly referred to by its trade name TPX (Mitsui Chemicals, Inc.), is a thermoplastic polymer that has the potential to be a useful window material for dynamic compression experiments. For such experiments, an optically transparent or a low x-ray absorptive window is often used to maintain stress within the sample during compression. TPX can be used as a low-impedance optical and x-ray window due to its good transmittance in most parts of the electromagnetic spectrum, very low density (0.83 g/cm3), and low x-ray absorption. In dynamic compression experiments, interferometry can be used to determine the particle velocity at the interface between the sample and window. However, velocimetry measures the rate of change of the optical path length, commonly referred to as the apparent particle velocity. An experimentally determined window correction factor is needed to ascertain the actual particle velocity from the measured apparent velocity. Here, we present the results of a series of dynamic compression experiments from 1 to 31 GPa designed to characterize the mechanical and optical response of TPX, determine the range of stresses over which TPX is transparent, and determine the window correction factor. Finally, the index of refraction was found to be essentially linear in density, resulting in a simple constant correction factor. TPX was found to remain largely transparent over the entire stress range examined.},

  doi          = {10.1063/1.5127867},

  journal      = {Journal of Applied Physics},

  number       = 18,

  volume       = 126,

  place        = {United States},

  year         = {Thu Nov 14 00:00:00 EST 2019},

  month        = {Thu Nov 14 00:00:00 EST 2019}

}

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Works referenced in this record:

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Journal of Applied Physics, Vol. 89, Issue 11
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Refractive index and elastic properties of z -cut quartz shocked to 60 kbar
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Similar Records

Title: Mechanical and optical response of polymethylpentene under dynamic compression

Abstract

Citation Formats

Unsteady compression waves in interferometer windows journal, June 2001

Refractive index and elastic properties of z -cut quartz shocked to 60 kbar journal, November 2000

Index of refraction of shock‐compressed fused silica and sapphire journal, December 1979

Wideband optical transmission properties of seven thermoplastics journal, January 1979

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On the index of refraction of shock‐compressed liquid nitromethane journal, May 1976

Compact system for high-speed velocimetry using heterodyne techniques journal, August 2006

Shock compression response of poly(4-methyl-1-pentene) plastic to 985 GPa journal, November 2015

An equation of state for polymethylpentene (TPX) including multi-shock response conference, January 2012

Shock compression of aluminum, copper, and tantalum journal, May 1981

Adiabatic release measurements in α -quartz between 300 and 1200 GPa: Characterization of α -quartz as a shock standard in the multimegabar regime journal, November 2013

Shock-Driven Decomposition of Polymers and Polymeric Foams journal, March 2019

On the Shock Response of Polymers to Extreme Loading journal, February 2016

Mesoscale simulation of shocked poly-(4-methyl-1-pentene) (PMP) foams conference, January 2012

First-principles and classical molecular dynamics simulation of shocked polymers journal, February 2010

Low-loss polymers for terahertz applications journal, January 2008

Unsteady compression waves in interferometer windows
journal, June 2001

Refractive index and elastic properties of z -cut quartz shocked to 60 kbar
journal, November 2000

Index of refraction of shock‐compressed fused silica and sapphire
journal, December 1979

Wideband optical transmission properties of seven thermoplastics
journal, January 1979

Laser interferometer for measuring high velocities of any reflecting surface
journal, November 1972

On the index of refraction of shock‐compressed liquid nitromethane
journal, May 1976

Compact system for high-speed velocimetry using heterodyne techniques
journal, August 2006

Shock compression response of poly(4-methyl-1-pentene) plastic to 985 GPa
journal, November 2015

An equation of state for polymethylpentene (TPX) including multi-shock response
conference, January 2012

Shock compression of aluminum, copper, and tantalum
journal, May 1981

Adiabatic release measurements in $α$ -quartz between 300 and 1200 GPa: Characterization of $α$ -quartz as a shock standard in the multimegabar regime
journal, November 2013

Shock-Driven Decomposition of Polymers and Polymeric Foams
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On the Shock Response of Polymers to Extreme Loading
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Mesoscale simulation of shocked poly-(4-methyl-1-pentene) (PMP) foams
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