A review of thick-target PIXE is presented. Particular attention is paid to the relative efficacies of various methods of calibration, to achievable detection limits and to various experimental factors which affect analytical accuracy.

PIXE analysis of thick targets

The Ka X-ray production cross sections of 53I, 55Cs, 56Ba and 57La for protons between 1.5 MeV and 3.0 MeV have been measured. Moreover, the K-shell ionization cross sections of 29Cu and 35 Br are reported. The targets are in the form of thin layers mounted on three different types of backings: nuclepore membrane filter, mylar, and thin carbon foil. The experimental results are compared with the most recent formulations of the perturbed stationary state model corrected for Coulomb deflection, relativistic and energy loss effects (ECPSSR), and of the relativistic plane wave Born approximation corrected for binding effect and Coulomb deflection (RPWBA-BC).

Precise X-ray production cross-section measurements of medium Z elements by protons

In this paper we have analyzed samples of Neolithic ceramics from Cucuteni-Scanteia - Vaslui county and Neolithic and Dacian ceramics from Magurele - Bucharest, by the method of neutron activation analysis. The following elements have been observed: Fe, K, La, Mn, Na, Sc and Sm. It has been noticed a relative and a slight clusterization of the analyzed items on the ratios of concentrations Na/Mn, La/Sc and La/Sm.

Analysis by neutron activation analysis a some ancient ceramics from Romanian territories

Ancient Dacian ceramics, from three different establishments from Romanian territory have been analyzed by neutron activation analysis. A series of elements has been determined: Ba, Eu, K, La, Mn, Na, Sc, Sm. Ba is the element that could be considered to differentiate relatively the three groups of ceramics.

Crystal Bennet

Papers

PIXE analysis of ancient Jordanian pottery