Analysis of x-ray spectra excited by x rays, electrons, and protons in monazite

H. J. Annegarn; C. C. C. Madiba; J. P. F. Sellschop; H. Genz; D. H. H. Hoffmann; W. Löw; A. Richter; R. E. Van Grieken

doi:10.1103/PhysRevC.16.379

Analysis of x-ray spectra excited by x rays, electrons, and protons in monazite

H. J. Annegarn, C. C. C. Madiba, J. P. F. Sellschop, H. Genz, D. H. H. Hoffmann, W. Löw, A. Richter, and R. E. Van Grieken

Phys. Rev. C 16, 379 – Published 1 July 1977

Abstract

Mineral monazite from Malaysia has been investigated by energy dispersive x-ray analysis employing three different methods: x-ray, relativistic electron and proton induced excitation. An upper limit of 15 ppm has been placed on the possible concentration of the superheavy element with $Z = 126$ .

[RADIOACTIVITY Monazite (Ce, La, Th)P $O_{4}$ ; measured x ray, electron and proton induced x-ray spectra. Deduced upper limit for concentration of element $Z = 126$ .]