By the same authors

From the same journal

From the same journal

Observation of inhibited electron-ion coupling in strongly heated graphite

Research output: Contribution to journalArticle

Published copy (DOI)

Author(s)

  • T. G. White
  • J. Vorberger
  • C. R D Brown
  • B. J B Crowley
  • P. Davis
  • S. H. Glenzer
  • J. W O Harris
  • D. C. Hochhaus
  • S. Le Pape
  • T. Ma
  • C. D. Murphy
  • P. Neumayer
  • L. K. Pattison
  • S. Richardson
  • D. O. Gericke
  • G. Gregori

Department/unit(s)

Publication details

JournalScientific Reports
DateE-pub ahead of print - 27 Nov 2012
DatePublished (current) - 2012
Volume2
Early online date27/11/12
Original languageEnglish

Abstract

Creating non-equilibrium states of matter with highly unequal electron and lattice temperatures (T ele ≠T ion) allows unsurpassed insight into the dynamic coupling between electrons and ions through time-resolved energy relaxation measurements. Recent studies on low-temperature laser-heated graphite suggest a complex energy exchange when compared to other materials. To avoid problems related to surface preparation, crystal quality and poor understanding of the energy deposition and transport mechanisms, we apply a different energy deposition mechanism, via laser-accelerated protons, to isochorically and non-radiatively heat macroscopic graphite samples up to temperatures close to the melting threshold. Using time-resolved x ray diffraction, we show clear evidence of a very small electron-ion energy transfer, yielding approximately three times longer relaxation times than previously reported. This is indicative of the existence of an energy transfer bottleneck in non-equilibrium warm dense matter.

Discover related content

Find related publications, people, projects, datasets and more using interactive charts.

View graph of relations