Precision of PIXE analysis of thin fluid-residue specimens using internal standards
Abstract
Different roles for internal standards in PIXE analysis of fluid residues are discussed. The efficacy of internal standards is predicated on having homogeneous targets of uniform thickness; the use of lecithin additives to achieve this is described and data are presented to illustrate the dependence of analytical precision on the mode of specimen preparation. Determination of actual thickness via measurement of the energy loss of transmitted protons is demonstrated; this provides a means of correcting for departures from the much-quoted "thin target" criterion.
- Publication:
-
Nuclear Instruments and Methods in Physics Research B
- Pub Date:
- February 1985
- DOI:
- 10.1016/0168-583X(85)90017-5
- Bibcode:
- 1985NIMPB...6..551C