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Title: Flash melting of tantalum in a diamond cell to 85 GPa

Here, we demonstrate a new level of precision in measuring melting temperatures at high pressure using laser flash-heating followed by Scanning Electron Microscopy and Focused Ion Beam Milling. Furthermore, the new measurements on tantalum put unprecedented constraints on its highly debated melting slope, calling for a reevaluation of theoretical, shock compression and diamond cell approaches to determine melting at high pressure. X-ray analysis of the recovered samples confirmed the absence of chemical reactions, which likely played a significant role in previous experiments.
Authors:
 [1] ;  [2]
  1. Carnegie Inst. of Washington, Argonne, IL (United States). Geophysical Lab.; Goethe Univ., Frankfurt (Germany). Inst of Geoscienes
  2. Carnegie Inst. of Washington, Argonne, IL (United States). Geophysical Lab.
Publication Date:
Grant/Contract Number:
NA0002006; SC0001057
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 93; Journal Issue: 5; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Carnegie Inst. of Washington, Argonne, IL (United States). Geophysical Lab.
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE
OSTI Identifier:
1379166
Alternate Identifier(s):
OSTI ID: 1379166