High-pressure melt curve of shock-compressed tin measured using pyrometry and reflectance techniques
- Mission Support and Test Services, LLC, North Las Vega, NV (United States)
We have measured the high pressure solid-liquid phase boundary of tin from 10 to 30 GPa and 1000 to 1800 K. Tin was shock compressed by plate impact and we made time-resolved radiance, reflectance, and velocimetry measurements at the interface of the tin sample and a lithium fluoride window. From these measurements we determined temperature versus pressure paths on the phase diagram. The tin sample was initially shocked into the high-pressure solid γ phase, and a subsequent release wave originating from the back of the impactor lowered the pressure at the interface along a constant entropy path. Onset of melt is identified by a significant change in the slope of the temperature-pressure release isentrope.
- Research Organization:
- Nevada National Security Site/Mission Support and Test Services LLC; Las Vegas, NV (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)
- DOE Contract Number:
- DE-NA0003624
- OSTI ID:
- 1726002
- Report Number(s):
- DOE/NV/03624-0470; STIP WF - 15442175
- Journal Information:
- Physics Review Letters, Journal Name: Physics Review Letters
- Country of Publication:
- United States
- Language:
- English
Similar Records
Release Path Temperatures of Shock-Compressed Tin from Dynamic Reflectance and Radiance Measurements
Use of IR pyrometry to measure free-surface temperatures of partially melted tin as a function of shock pressure