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A BeppoSAX survey of bright Neutron Star (NS) systems in globular clusters,together with the results obtained on Galactic LMXRB, suggests that atwo-component model is a reasonable description of the 0.1-200 keV spectra. Atenergies lower than a few keV, a thermal component dominates, either due to thedirect view of the NS surface, to the emission of the boundary layer, or to amulti-temperature blackbody originating in the accretion disk. At higherenergies, a power-law with an high-energy cutoff is the likely signature ofthermal Comptonization of soft X-ray photons, probably produced by the samethermal mechanisms as above. The plasma optical depth (electron temperature)correlates (anticorrelates) with the X-ray luminosity, suggesting that theproperties of the Comptonizing plasma are driven by the X-ray energy output.Comment: 4 Latex pages, 6 figures, To appear in "Proceedings of X-ray  Astronomy '99 - Stellar Endpoints, AGN and the Diffuse Background," 2000. G.  Malaguti, G.Palumbo & N. White (eds), Gordon & Breach (Singapore

Comptonization in X-ray bright neutron star globular cluster systems