a School of Politics, Philosophy, language and Communication Studies, University of east anglia, norwich, UK; b faculteit der Maatschappij-en Gedragswetenschappen, Universiteit van amsterdam, amsterdam, the netherlands ABSTRACT This paper outlines an account of political realism as a form of ideology critique. We defend the normative edge of this critical-theoretic project against the common charge that there is a problematic trade-off between a theory's groundedness in facts about the political status quo and its ability to envisage radical departures from the status quo. To overcome that problem, we combine insights from theories of legitimacy by Bernard Williams and other realists, Critical Theory, and analytic epistemological and metaphysical theories of cognitive bias, ideology and social construction. The upshot is an account of realism as empirically informed critique of social and political phenomena. We reject a sharp divide between descriptive and normative theory, and so provide an alternative to the anti-empiricism of some approaches to Critical Theory as well as to the complacency towards existing power structures found within liberal realism, let alone mainstream normative political philosophy, liberal or otherwise.

Raymond Geuss has been viewed as one of the figureheads of the recent debates about realism in political theory. This interpretation, however, depends on a truncated understanding of his work of the past thirty years. I will offer the first sustained engagement with this work (in English and German) which allows understanding his realism as a project for reorienting political theory, particularly the relationship between political theory and politics. I interpret this reorientation as a radicalization of realism in political theory through the combination of the emphasis on the critical purpose of political theory and the provision of practical, contextual orientation. Their compatibility depends on Geuss' understanding of criticism as negative, of power as 'detoxified' and of the critical purchase of political theory as based on the diagnostic engagement with its context. This radicalization particularly challenges the understanding of how political theory relates to its political context.

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The g-factor of the 2~ state of 192pt has been measured by the IPAC technique in an external magnetic field as: g(2 +, 192pt)= +0.287(17). An additional IPAC experiment with an ~92IrFe sample was performed with the same level in order to investigate the hyperfine field. The result: COLZ(2~-, ~92PtFe)=0.1115(9) gives the hyperfine field: B4?2K(PtFe)= 126-.8(71) T. The result of an LTNO experiment with the same level is compatible with the assumption that 100% of the 192Ir atoms were on unique sites.