Chaurasia, S., Rao, Usha, Mohan, Ashutosh et al. (1 more author) (2022) Measurement of shock velocity and temperature in laser-shocked carbon disulphide using time-resolved Raman spectroscopy. Journal of Quantitative Spectroscopy and Radiative Transfer. 108000. ISSN 0022-4073
Abstract
High-resolution time-resolved Raman spectroscopy of laser-shocked liquid carbon disulfide (CS2) is reported. The symmetric stretching mode (ν1) and first overtone of the bending mode (2 ν2) of CS2 at 656 cm−1 and 802 cm−1 wavenumbers respectively are analyzed to monitor the possible phase transitions occurring in the sample during shock wave propagation in the pressure range 0.4 – 4.4 GPa by varying the laser intensity on target from 0.2 GW/cm2 (40 mJ) to 6.4 GW / cm2 (1300 mJ). A liquid to solid phase transition is observed at 1.5 GPa, as compared to 0.8 GPa in static compression. The difference in these measurements is thought to be due to the high temperatures involved in the dynamic compression experiments described. The shock wave velocities in CS2 at 1.5 GPa and 2.6 GPa are calculated by measuring the intensity ratio of Raman modes emerging from the shocked region to that of the whole sample. 1D radiation-hydrodynamic simulations are performed to corroborate the experimental data. Enhancement of the Raman cross-section of carbon disulfide is observed from 2.5 GPa, which is much lower than the previously reported threshold of 8 GPa as reported by Yoo et al., [24]. This discrepancy in results is thought to be due to the significant contribution of temperature along with the pressure in laser-driven nanosecond single shock experiment.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2021 Published by Elsevier Ltd. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 09 Dec 2021 15:50 |
Last Modified: | 03 Dec 2024 11:01 |
Published Version: | https://doi.org/10.1016/j.jqsrt.2021.108000 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1016/j.jqsrt.2021.108000 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:181425 |