Accelerated expansion of laser-ablated materials near a solid surface

K. R. Chen, J. N. Leboeuf, R. F. Wood, D. B. Geohegan, J. M. Donato, C. L. Liu, A. A. Puretzky

Research output: Contribution to journalArticlepeer-review

64 Citations (Scopus)

Abstract

A dynamic source effect that accelerates the expansion of laser-ablated material in the direction perpendicular to the target is demonstrated. A self-similar theory shows that the maximum expansion velocity is proportional to csα, where 1-α is the slope of the velocity profile and cs is the sound speed. Numerical hydrodynamic modeling is in good agreement with the theory. A dynamic partial ionization effect is also studied. With these effects, α is reduced and the maximum expansion velocity is significantly increased over that found from conventional models.

Original languageEnglish
Pages (from-to)4706-4709
Number of pages4
JournalPhysical review letters
Volume75
Issue number25
DOIs
Publication statusPublished - 1995

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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