Recent Experimental Results and Modelling of High-Mach-Number Jets and the Transition to Turbulence

In recent years, we have carried out experiments at the University of Rochester’s Omega laser in which supersonic, dense-plasma jets are formed by the interaction of strong shocks in a complex target assembly (Foster et al., Phys. Plasmas 9 (2002) 2251). We describe recent, significant extensions to this work, in which we consider scaling of the experiment, the transition to turbulence, and astrophysical analogues. In new work at the Omega laser, we are developing an experiment in which a jet is formed by laser ablation of a titanium foil mounted over a titanium washer with a central, cylindrical hole. Some of the resulting shocked titanium expands, cools, and accelerates through the vacuum region (the hole in the washer) and then enters a cylinder of low-density foam as a jet. We discuss the design of this new experiment and present preliminary experimental data and results of simulations using AWE hydrocodes. In each case, the high Reynolds number of the jet suggests that turbulence should develop, although this behaviour cannot be reliably modelled by present, resolution-limited simulations (because of their low-numerical Reynolds number).Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/42047/1/10509_2005_Article_3921.pd

Unmaking Militarized Masculinity: Veterans and the Project of Military-to-Civilian Transition

This is the author accepted manuscript. The final version is available from Taylor & Francis via the DOI in this record.Feminist scholarship on war and militarization has typically focussed on the making of militarized masculinity. However, in this article, we shed light on the process of ‘unmaking’ militarized masculinity through the experiences of veterans transitioning from military to civilian life. We argue that in the twenty-first century, veterans' successful re-integration into civilian society is integral to the legitimacy of armed force in Western polities and is therefore a central concern of policymakers, third sector service-providers and the media. But militarized masculinity is not easily unmade. Veterans often struggle with their transition to civilian life and the negotiation of military and civilian gender norms. They may have an ambivalent relationship towards the state and the military. Furthermore, militarized masculinity is embodied and experienced, and has a long and contradictory afterlife in veterans themselves. Attempts to unmake militarized masculinity in the figure of the veteran challenge some of the key concepts currently employed by feminist scholars of war and militarization. In practice, embodied veteran identities refuse a totalizing conception of what militarized masculinity might be, and demonstrate the limits of efforts to exceptionalize the military, as opposed to the civilian, aspects of veteran identity. In turn the very liminality of this ‘unmaking’ troubles and undoes neat categorizations of military/civilian and their implied masculine/feminine gendering. We suggest that an excessive focus on the making of militarized masculinity has limited our capacity to engage with the dynamic, co-constitutive, and contradictory processes which shape veterans’ post-military lives.Maya Eichler gratefully acknowledges funding received through a Social Sciences and Humanities Research Council of Canada Insight Grant (435-2016-1242) and the Canada Research Chair Program of the Canadian federal government during the writing of this article