Unknown

Dataset Information

0

Observation of inhibited electron-ion coupling in strongly heated graphite.


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.

SUBMITTER: White TG 

PROVIDER: S-EPMC3506979 | biostudies-literature |

REPOSITORIES: biostudies-literature

Similar Datasets

| S-EPMC6102289 | biostudies-literature
| S-EPMC10830112 | biostudies-literature
| S-EPMC4621604 | biostudies-other
| S-EPMC8600372 | biostudies-literature
| S-EPMC6333624 | biostudies-literature
| S-EPMC3869827 | biostudies-other
| S-EPMC5075791 | biostudies-literature
| S-EPMC4439324 | biostudies-literature
| S-EPMC8755757 | biostudies-literature
| S-EPMC3805971 | biostudies-other