TY - JOUR
T1 - Precision of PIXE analysis of thin fluid-residue specimens using internal standards
AU - Campbell, John L.
AU - Teesdale, William J.
AU - Leigh, Robert G.
N1 - Funding Information:
present infigs. 7 and 8 some representative K, X-ray results for the case of protons incident on carbon targets. Stopping powers S(E) were obtained again from ref [8], and X-ray mass attenuation coefficients from Leroux and Thinh [9]. The cross-sections, a(E), were obtained from a code based on the ECPSSR formulation of This work is supported by the Natural Sciences and Engineering Research Council of Canada. We are grateful to R.D. Vis for the suggestion of using RBS to measure specimen thickness.
PY - 1985/2
Y1 - 1985/2
N2 - 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.
AB - 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.
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U2 - 10.1016/0168-583X(85)90017-5
DO - 10.1016/0168-583X(85)90017-5
M3 - Article
AN - SCOPUS:0022010601
SN - 0168-583X
VL - 6
SP - 551
EP - 557
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
IS - 3
ER -