Emission spectroscopy for the temperature measurement of salt-water ice during hypervelocity impact

Tandy, Jonathan D., Spathis, Vassilia, Wozniakiewicz, Penny and Alesbrook, Luke (2021) Emission spectroscopy for the temperature measurement of salt-water ice during hypervelocity impact. In: European Planetary Science Congress 2021, 13 - 24 September 2021, Online.

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Abstract / Description

Current understanding of icy Solar System bodies, such as Europa and Enceladus, suggests they may contain favourable environmental conditions to synthesise biologically significant molecules. Laboratory impact flash measurements from icy targets can be utilised to constrain the temperatures required for the shock-synthesis of these biologically important species. This abstract details temperature measurement of salt-water ice during hypervelocity impact using in-situ emission spectroscopy. This preliminary study utilises different projectile speeds and materials to assess the range of generated temperatures during impact. The relative intensities of the averaged Na 589 nm and 819 nm doublet emission lines originating from the target ice were used to determine approximate peak temperatures for each impact experiment using a Boltzmann distribution calculation. All determined temperatures using this method were between 3000 K and 3420 K. Furthermore, shots with similar impacts speeds showed a small temperature difference of 140 K despite the distinctly different projectile material properties.

Item Type:	Conference or Workshop Item (Paper)
Uncontrolled Keywords:	solar system bodies; Europa; Enceladus; emission spectroscopy; hypervelocity impact; salt-water ice
Subjects:	500 Natural Sciences and Mathematics > 520 Astronomy & allied sciences 500 Natural Sciences and Mathematics > 530 Physics 500 Natural Sciences and Mathematics > 540 Chemistry & allied sciences 600 Technology > 620 Engineering & allied operations
Department:	School of Human Sciences
Depositing User:	Jonathan Tandy
Date Deposited:	30 Jul 2021 08:36
Last Modified:	30 Jul 2021 08:36
URI:	https://repository.londonmet.ac.uk/id/eprint/6894

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