Article (Scientific journals)
Micro-crystalline inclusions analysis by PIXE and RBS
Strivay, David; Ramboz, Clairette; Gallien, Jean-Paul et al.
2008In Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms, 266 (10), p. 2375-2378
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Keywords :
PIXE; RBS; inclusion
Abstract :
[en] A characteristic feature of the nuclear microprobe using a 3 MeV proton beam is the long range of particles (around 70 mu m in light matrices). The PIXE method, with EDS analysis and using the multilayer approach for treating the X-ray spectrum allows the chemistry of an intra-crystalline inclusion to be measured, provided the inclusion roof and thickness at the impact point of the beam (Z and e, respectively) are known (the depth of the inclusion floor is Z + e). The parameter Z of an inclusion in a mineral can be measured with a precision of around 1 mu m using a motorized microscope. However, this value may significantly depart from Z if the analyzed inclusion has a complex shape. The parameter e can hardly be measured optically. By using combined RBS and PIXE measurements, it is possible to obtain the geometrical information needed for quantitative elemental analysis. This paper will present measurements on synthetic samples to investigate the advantages of the technique, and also on natural solid and fluid inclusions in quartz. The influence of the geometrical parameters will be discussed with regard to the concentration determination by PIXE. In particular, accuracy of monazite micro-inclusion dating by coupled PIXE-RBS will be presented. (C) 2008 Elsevier B.V. All rights reserved.
Research center :
IPNAS, ISTO
Disciplines :
Physics
Earth sciences & physical geography
Author, co-author :
Strivay, David  ;  Université de Liège - ULiège > Département de physique > Physique nucléaire, atomique et spectroscopie
Ramboz, Clairette;  CNRS-Orléans > Institut des Sciences de la Terre d’Orléans
Gallien, Jean-Paul;  CEA-Saclay (France) > Laboratoire Pierre Süe
Grambole, Dieter;  Forschungszentrum Rossendorf > Ionenstrahlzentrum
Sauvage, Thierry;  CNRS-Orléans > Centre d’Etudes et de Recherches par Irradiation
Kouzmanov, Kalin;  Université de Genève - UNIGE > Sciences de la Terre
Language :
English
Title :
Micro-crystalline inclusions analysis by PIXE and RBS
Publication date :
2008
Journal title :
Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms
ISSN :
0168-583X
eISSN :
1872-9584
Publisher :
Elsevier, Amsterdam, Netherlands
Volume :
266
Issue :
10
Pages :
2375-2378
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
ULg, CNRS, FNRS
Available on ORBi :
since 27 November 2008

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