2 resultados para post-dynamic recrystallization
Resumo:
Northern Ireland (NI) is emerging from a violent period in its troubled history and remains a
society characterized by segregation between its two main communities. Nowhere is this more
apparent than in education, where for the most part Catholic and Protestant pupils are
educated separately. During the last 30 years there has been a twofold pressure placed on the
education system in NI - at one level to respond to intergroup tensions by promoting
reconciliation, and at another, to deal with national policy demands derived from a global neoliberalist
economic agenda. With reference to current efforts to promote shared education
between separate schools, we explore the uneasy dynamic between a school-based
reconciliation programme in a transitioning society and system-wide values that are driven by
neo-liberalism and its organizational manifestation - new managerialism. We argue that whilst
the former seeks to promote social democratic ideals in education that can have a potentially
transformative effect at societal level, neoliberal priorities have the potential to both subvert
shared education and also to embed it.
Resumo:
As part of the ultrafast charge dynamics initiated by high intensity laser irradiations of solid targets,high amplitude EM pulses propagate away from the interaction point and are transported along anystalks and wires attached to the target. The propagation of these high amplitude pulses along a thinwire connected to a laser irradiated target was diagnosed via the proton radiography technique,measuring a pulse duration of 20 ps and a pulse velocity close to the speed of light. The strongelectric field associated with the EM pulse can be exploited for controlling dynamically the protonbeams produced from a laser-driven source. Chromatic divergence control of broadband laser drivenprotons (upto 75% reduction in divergence of >5 MeV protons) was obtained by winding the supportingwire around the proton beam axis to create a helical coil structure. In addition to providingfocussing and energy selection, the technique has the potential to post-accelerate the transiting protonsby the longitudinal component of the curved electric field lines produced by the helical coil lens.