McDermott, K. et al. (2016). Survivability of copper projectiles during hypervelocity impacts in porous ice: A laboratory investigation of the survivability of projectiles impacting comets or other bodies. Icarus[Online]268:102-117. Available at: http://doi.org/10.1016/j.icarus.2015.12.037.
Steer, B. et al. (2016). Raman spectroscopic identification of size-selected airborne particles for quantitative exposure assessment. Measurement Science & Technology[Online]27:45801-45801. Available at: http://dx.doi.org/10.1088/0957-0233/27/4/045801.
The SMART-1 end-of-life impact with the lunar surface was simulated with impacts in a two stage light-gas gun onto inclined basalt targets with a shallow surface layer of sand. This simulated the probable impact site, where a loose regolith will have overlaid a well consolidated basaltic layer of rock. The impact angles used were at 5 and 10 from the horizontal. The impact speed was ~2 km s1 and the projectiles were 2.03 mm diameter aluminum spheres. The sand depth was between approximately 0.8 and 1.8 times the projectile diameter, implying a loose lunar surface regolith of similar dimensions to the SMART-1 spacecraft. A crater in the basement rock itself was only observed in the impact at 10 incidence, and where the depth of loose surface material was less than the projectile diameter, in which case the basement rock also contained a small pit-like crater. In all cases, the projectile ricocheted away from the impact site at a shallow angle. This implies that at the SMART-1 impact site the crater will have a complicated structure, with exposed basement rock and some excavated rock displaced nearby, and the main spacecraft body itself will not be present at the main crater.
Wozniakiewicz, P. et al. (2015). The survivability of phyllosilicates and carbonates impacting Stardust Al foils: Facilitating the search for cometary water. Meteoritics & Planetary Science[Online]50:2003-2023. Available at: http://doi.org/10.1111/maps.12568.
Despite the high prominence of the perovskites BiFeO3 and KNbO3 the solid solution between the two has received little attention. We report a detailed neutron and synchrotron X-ray powder diffraction, and Raman spectroscopy study which demonstrates an R3c P4mm Amm2 series of structural phase transitions similar to that exhibited by the PbZrO3PbTiO3 solid solution.