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PIXE Data Library
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Reference:
M. G. Pia, G. Weidenspointner, M. Augelli, L. Quintieri, P. Saracco, M. Sudhakar,
A. Zoglauer,
PIXE simulation with Geant4
IEEE Trans. Nucl. Sci., vol. 56, no. 6, pp. 3614-3649, Dec. 2009 |
Bibliographical references to the original sources of models and
experimental mentioned in this web page can be found in the above
cited publication.
Contents:
Cross Sections
Data format
Bibliography
Data Library:
Documentation
Data
Data retrieval program
This data library was developed for
PIXE simulation with Geant4;
however, it can be used also with other software and
experimental environments.
Ionisation cross sections
The data library contains cross
section tabulations for K, L and M shell ionisation based on various theoretical
and empirical models. The models from which the data derive are described in
detail in:
M. G. Pia, G. Weidenspointner, M. Augelli, L. Quintieri, P. Saracco, M. Sudhakar,
A. Zoglauer,
PIXE simulation with Geant4, IEEE Trans. Nucl. Sci., vol. 56, no. 6, pp. 3614-3649, Dec. 2009.
The most relevant related references specific to each model are cited below.Theoretical cross section models
Theoretical cross section models include:
- Plane Wave Born Approximation (PWBA)
- ECPSSR [2]
- ECPSSR with
corrections for the Dirac-Hartree-Slater nature of the
K shell (ECPSSR-HS) [3]
- ECPSSR with
United Atom correction (ECPSSR-UA) [4]
- ECPSSR with improvements to K shell cross section specific to
high
energy (ECPSSR-HE) [5]
The tabulations
corresponding to theoretical calculations span the energy range between 10 keV
and 10 GeV.ECPSSR and PWBA tabulations have been produced using the ISICS
[6]
software, 2006 version [7] and an extended version
[8] including high energy
developments.
Empirical cross section models
Theoretical cross section models include:
The empirical
models are tabulated consistently with their energy range of validity.
The tabulations of K shell cross sections by Paul and Sacher, Paul and Bolik
are based on the data reported in the respective references. The tabulations of
the other cross sections were produced by means of software developed ad hoc by
M. G. Pia et al.
Validation of the cross sections
Details
about the accuracy of the cross section are reported in the
reference paper; specifically,
section V (pp. 3627-3639) is devoted to the verification and validation of the
cross section models tabulated in the data library.
Data format
The data
are divided in two main folders:
- proton folder
- alpha folder
Each of
these folders contains three folders:
- k folder: it contains a folder for each
implemented model for K-shell ionization
- l folder: it contains a folder for each implemented model for L-shell ionization
- m folder: it contains a folder for each implemented model for M-shell ionization
Each cross
section data set is stored as a separate file.
The ASCII file for each element consists of two columns, listing energy values
(in MeV) and corresponding cross section values (in mb).
The data library
is provided in ASCII format. The entire library requires approximately
22 MB of storage.
References
- M. G. Pia, G. Weidenspointner, M. Augelli, L. Quintieri, P. Saracco,
M. Sudhakar, A. Zoglauer,
PIXE simulation with Geant4,
IEEE Trans. Nucl. Sci., vol. 56, no. 6, pp. 3614-3649, Dec. 2009.
- W. Brandt and
G. Lapicki, “Energy-loss effect in inner-shell Coulomb ionization by heavy
charged particles”, Phys. Rev. A, vol. 23, 1717, 1981.
- G. Lapicki,
“The status of theoretical K-shell ionization cross sections by protons”, X-Ray Spectrom., vol. 34, pp. 269-278, 2005.
- S. J. Cipolla, “The united atom approximation option in the ISICS program
to calculate K, L, and M-shell cross sections from PWBA and ECPSSR theory”, Nucl.
Instrum. Meth. B, vol. 261, pp. 142-144, 2007.
- G. Lapicki,
“Scaling of analytical cross sections for K-shell ionization by nonrelativistic
protons to cross sections by protons at relativistic velocities”, J. Phys. B,
vol. 41, pp. 115201, 2008.
- Z. Liu and S. J. Cipolla, “ISICS: A program for calculating K-, L-, and
M-shell cross sections from ECPSSR theory using a personal computer,” Comput.
Phys. Comm., vol. 97, pp. 315–330, 1996.
-
S. J. Cipolla, “An improved version of ISICS: a program for calculating K,
L, and M-shell cross sections from PWBA and ECPSSR theory using a personal
computer”, Comp. Phys. Comm., vol. 176, pp. 157-159, 2007.
- S. Cipolla, ISICS, 2008 version. Private communication Creighton Univ., Omaha NE 68178.
-
H. Paul and J. Sacher, “Fitted empirical reference cross sections for
K-shell ionization by protons”, Atom. Data Nucl. Data Tables, vol. 42, pp. 105-156,
1989.
- A. Kahoul, M. Nekkab, and B. Deghfel, “Empirical K-shell ionization
cross-sections of elements from 4Be to 92U by proton impact”, Nucl. Instrum.
Meth. B, vol. 266, pp. 4969-4975, 2008.
- H. Paul and O. Bolik, “Fitted Empirical Reference Cross
Sections for K-Shell Ionization by Alpha Particles”, Atom. Data Nucl. Data Tables, vol. 54, pp.
75-131, 1993.
- Y. Miyagawa et al., “Analytical Formulas for Ionization Cross Sections and
Coster-Kronig Corrected Fluorescence Yields of the Ll, L2, and L3 Subshells”,
Nucl. Instrum. Meth. B, vol. 30, pp. 115-122, 1988.
-
I. Orlic et al., “Semiempirical Formulas for Calculation of L Subshell
Ionization Cross Sections”, Int. J. PIXE, vol. 4, no. 4, pp. 217-230, 1994.
-
C. H. Sow et al., “New parameters for the calculation of L subshell
ionization cross sections”, Nucl. Instrum. Meth. B, vol. 75, pp. 58-62, 1993.
Last modified
14 Dec 2010, Maria Grazia Pia