Inertial effects in laser-driven ablation

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Description

The gasdynamic partial differential equations (PDE's) governing the motion of an ablatively accelerated target (rocket) contain an inertial force term that arises from acceleration of the reference frame in which the PDE's are written. We give a simple, intuitive description of this effect, and estimate its magnitude and parametric dependences by means of approximate analytical formulas inferred from our computer hydrocode calculations. Often this inertial term is negligible, but for problems in the areas of laser fusion and laser equation of state studies we find that it can substantially reduce the attainable hydrodynamic efficiency of acceleration and implosion.

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Pages: 7

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Harrach, R.J.; Szeoke, A. & Howard, W.M. July 15, 1983.

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Description

The gasdynamic partial differential equations (PDE's) governing the motion of an ablatively accelerated target (rocket) contain an inertial force term that arises from acceleration of the reference frame in which the PDE's are written. We give a simple, intuitive description of this effect, and estimate its magnitude and parametric dependences by means of approximate analytical formulas inferred from our computer hydrocode calculations. Often this inertial term is negligible, but for problems in the areas of laser fusion and laser equation of state studies we find that it can substantially reduce the attainable hydrodynamic efficiency of acceleration and implosion.

Physical Description

Pages: 7

Notes

NTIS, PC A02/MF A01.

Source

  • American Physical Society meeting on shock waves in condensed media, Santa Fe, NM, USA, 18 Jul 1983

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  • Other: DE84000071
  • Report No.: UCRL-88682
  • Report No.: CONF-830719-44
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 5545385
  • Archival Resource Key: ark:/67531/metadc1092801

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • July 15, 1983

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

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  • April 26, 2018, 6:44 p.m.

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Harrach, R.J.; Szeoke, A. & Howard, W.M. Inertial effects in laser-driven ablation, article, July 15, 1983; [Livermore,] California. (digital.library.unt.edu/ark:/67531/metadc1092801/: accessed October 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.