Differential heating platform for thermal conductivity measurements in high-energy-density matter
ORAL
Abstract
Transport measurements are very challenging in HED matter, especially in the warm dense matter regime. This talk will give a brief summary of recent efforts on thermal conductivity study using the differential heating platform [1] in a few materials including aluminum [2], carbon [3] and iron [4,5]. Various techniques have been developed at different facilities for detecting temperature and small spatial scale-lengths in order to infer thermal conductivity, such as ultrafast streaked optical pyrometry [2], refraction-enhanced radiography [6], Fresnel Diffractive Radiography [7], X-ray absorption near-edge structure (XANES) [4,5] and Extended X-ray absorption fine structure (EXAFS) [8]. Experimental results, challenges and future directions will be discussed.
*This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.
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Publication: [1] Y. Ping, et al. Phys. Plasmas. 22, 092701 (2015).
[2] A. McKelvey, et al. Sci. Rep. 7, 7015 (2017).
[3] Y. Ping, et al. Phys. Rev. E 100, 043204 (2019).
[4] A. Fernandez-Pañella, et al. Phys. Rev. B 101, 184309 (2020).
[5] T. Ogitsu, et al. Phys. Rev. B 97, 214203 (2018).
[6] Y. Ping et al. JINST 6, P09004 (2011).
[7] C. H. Allen et al., Appl. Opt. 61, 1987, (2022).
[8] Y. Ping, et al. Phys. Rev. Lett. 111, 065501 (2013).
Presenters
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Yuan Ping
- Lawrence Livermore Natl Lab