TTPIXAN — A package of computer programs for quantitative thick target PIXE analysis

Standardless semi-quantitative analysis by PIXE

“…The first parameter was calculated using Eqs. (15) and (19) from the value obtained for A j,q , because the latter is more stable than β j,q 3 . It is interesting to note the similarity between the energy dependence of the area A j,q and the Si mass absorption coefficient.…”

“…Several quantification procedures have been developed and implemented for different kinds of samples in software for obtaining the elemental composition by PIXE, for example, GUPIX [10][11][12][13] , GeoPIXE 14 , TTPIXAN 15 , PIXYKLM 16 , PIXEF 17 , and SAPIX 18 . Some of these software tools were developed and optimized only for local use, whereas other ones are more versatile packages and were open to the users community.…”

“…The main characteristics of the software packages mentioned in this section are very concisely presented in table 1; for a more detailed description see refs. [10][11][12][13][14][15][16][17][18][19][20]29 .…”

L subshell and total M shell x-ray production cross sections of Hg for protons of energy 0.7 - 2.9 MeV

“…where Y x and Y p are the numbers (dead time corrected) of the x-rays and elastically scattered protons, respectively, ε(E x ) is the Si(Li) detector efficiency for x-ray energy (E x ), x and p are x-ray and particle detector solid angles, σ p (E 1 ) is the differential elastic cross section into p and the factor F (E 1 , E) accounts for a finite target thickness that results both in x-ray absorption and projectile energy loss E in the target (Braziewicz et al 1984, Pajek 1989. For calculation of this factor we used the semi-empirical stopping powers of Ziegler (1991) by the TRIM programme and the absorption coefficients were obtained from TTPIXAN (Orlic et al 1990). For the Hg target this correction was less than 10% for L lines and 30% for M line at all proton energies.…”

L-shell x-ray production for Rh, Ag, Cd, Sb and I with protons in the energy range from 1.6 to 5.2 MeV

“…Figure 1 shows the resulting detector efficiency. The full curve presents the efficiency which was calculated with the computer code TTPIXAN developed by Orlić et al (1990). In the x-ray energy region of interest the measured detector efficiency had an uncertainty of up to 6%, coming mainly from the uncertainties in the K-shell cross sections.…”