Study of ground-state titanium ion velocity distributions in laser-produced plasma plumes

The velocity distribution of ground-state titanium ions within a low-temperature plasma resulting from the laser ablation of a titanium target has been investigated. A KrF excimer laser was focused onto the target at moderate fluences (

Dielectronic recombination of ground-state and metastable Li+ ions

Dielectronic recombination has been investigated for Delta n = 1 resonances of ground-state Li+(1s(2)) and for Delta n = 0 resonances of metastable Li (+) (1s2s S-3). The ground-state spectrum shows three prominent transitions between 53 and 64 eV, while the metastable spectrum exhibits many transitions with energies

Strength development of mortars containing ground granulated blast-furnace slag: Effect of curing temperature and determination of apparent activation energies

The strength development of mortars containing ground granulated blast-furnace slag (ggbs) and portland cement was investigated. Variables were the level of ggbs in the binder, water-binder ratio and curing temperature. All mortars gain strength more rapidly at higher temperatures and have a lower calculated ultimate strength. The early age strength is much more sensitive to temperature for higher levels of ground granulated blast-furnace slag. The calculated ultimate strength is affected to a similar degree for all ggbs levels and water-binder ratios, with only the curing temperature having a significant effect. Apparent activation energies were determined according to ASTM C1074 and were found to vary approximately linearly with ggbs level from 34 kJ/mol for portland cement mortars to around 60 kJ/mol for mortars containing 70% ggbs. The water-binder ratio appears to have little or no effect oil the apparent activation energy. (c) 2005 Elsevier Ltd. All rights reserved.

An Inconvenient Truth: Barriers to Truth Recovery in the Aftermath of Institutional Child Abuse in Ireland

Contemporary settled democracies, including the United States, England and Wales and Ireland, have witnessed a string of high profile cases of institutional child abuse in both church and state settings. Set against the broader literature on transitional justice, this analysis argues that there are significant barriers to truth recovery within the particular context of historical institutional abuse by the clergy in the Republic of Ireland. In the main, I argue that the frameworks of the inquiries and commissions into historical institutional child abuse are not conducive to truth recovery or the search for justice in dealing with the legacy of an abusive past. It is the church-state relationship which makes the Irish situation noteworthy and unique. The Catholic Church and child care institutions are especially self-protective, secretive and closed by nature and strongly discourage the drawing of attention to any deficiencies in organisational procedures. The nature of the public inquiry process also means that there is often a rather linear focus on accountability and apportioning blame. Collectively, such difficulties inhibit fuller systemic investigation of the veracity of what actually happened and, in turn, meaningful modification of child care policies. The article concludes by offering some thoughts on implications for transitional justice discourses more broadly as well as the residual issues for Ireland and other settled democracies in terms of moving on from the legacy of institutional child abuse.

Collisions Strengths and Effective Collision Strengths for transitions within the ground state configuration of S III

We have carried out a 29-state R-matrix calculation in order to calculate collision strengths and effective collision strengths for the electron impact excitation of S III. The recently developed parallel RMATRX II suite of codes have been used, which perform the calculation in intermediate coupling. Collision strengths have been generated over an electron energy range of 0-12 Ryd, and effective collision strength data have been calculated from these at electron temperatures in the range 1000-100,000 K. Results are here presented for the fine-structure transitions between the ground-state configurations of 3s(2)3p(2) P-3(0,1,2), D-1(2), and S-1(0), and the values given resolve a discrepancy between two previous R-matrix calculations.

z'-band Ground-based Detection of the Secondary Eclipse of WASP-19b

We present the ground-based detection of the secondary eclipse of the transiting exoplanet WASP-19b. The observations were made in the Sloan z' band using the ULTRACAM triple-beam CCD camera mounted on the New Technology Telescope. The measurement shows a 0.088% ± 0.019% eclipse depth, matching previous predictions based on H- and K-band measurements. We discuss in detail our approach to the removal of errors arising due to systematics in the data set, in addition to fitting a model transit to our data. This fit returns an eclipse center, T 0, of 2455578.7676 HJD, consistent with a circular orbit. Our measurement of the secondary eclipse depth is also compared to model atmospheres of WASP-19b and is found to be consistent with previous measurements at longer wavelengths for the model atmospheres we investigated.

'Securing' the past: Policing and the contest over truth in Northern Ireland

The question of whether Northern Ireland should have a formal truth recovery process has been amplified by the recent Report of the Consultative Group on the Past. Compared to the volume at which the truth recovery debate has been played out, relatively little is known about policing attitudes to this form of dealing with the past. This paper analyses the ways in which the history and context of policing in Northern Ireland have shaped attitudes towards truth recovery. It will be argued that differing opinions on the need for truth recovery are part of a debate over 'ownership of the past' between the ardent supporters of the Royal Ulster Constabulary and the new post-Patten managers and modernizers.