#F f1f2_asf_Kissel.dat
#UT Elastic Photon-Atom Scattering, anomalous scattering factors.
#UIDL xf1f2
#D Tue Oct 1 14:27:02 2002
#C This file has been created using f1f2_asf_Kissel.pro on Tue Oct 1 14:27:02 2002
#C This file belongs to the DABAX library. More information on
#C DABAX can be found at:
#C http://www.esrf.fr/computing/scientific/dabax/
#UD Elastic Photon-Atom Scattering, anomalous scattering factors.
#UD
#UD This data set contains data from the RTAB database:
#UD L. Kissel, Radiation physics and chemistry 59 (2000) 185-200
#UD available at:
#UD http://www-phys.llnl.gov/Research/scattering/RTAB.html
#UD An interactive WWW interface is in
#UD http://www-phys.llnl.gov/Research/scattering/asf.html
#UD
#UD These data are computed for neutral atoms, only, entirely
#UD within a local relativistic self-consistent potential
#UD with the Slater local-exchange coefficient and Latter tail.
#UD For a detailed discussion of the underlying validity of the
#UD information contained in these directories see, for example:
#UD
#UD Validity of Form-Factor, Modified-Form-Factor and
#UD Anomalous-Scattering-Factor Approximations in Elastic Scattering
#UD Calculations, by Lynn Kissel, B. Zhou, S. C. Roy, S. K. Sen Gupta and
#UD R. H. Pratt, Acta Crystallographica Vol. A51, 271-288 (1995).
#UD
#UD New Relativistic S-Matrix Results for Scattering - Beyond the Usual
#UD Anomalous Factors/Beyond Impulse Approximation, by R. H. Pratt, Lynn
#UD Kissel and P. M. Bergstrom, Jr., in Resonant Anomalous X-Ray
#UD Scattering, edited by G. Materlik, C. J. Sparks and K. Fischer
#UD (North-Holland: Amsterdam, 1994).
#UD
#UD Elastic Scattering of Gamma-Rays and X-Rays by Atoms, by
#UD P. P. Kane, Lynn Kissel, R. H. Pratt and S. C. Roy, Physics Reports
#UD Vol. 140, 75-159 (1986).
#UD
#UD Rayleigh Scattering - Elastic Photon Scattering by Bound
#UD Electrons, by Lynn Kissel and R. H. Pratt, in Atomic Inner-Shell
#UD Physics, edited by Bernd Crasemann (Plenum Publishing: New York,
#UD 1985).
#UD
#UD Notes:
#UD 1) The data used to create these tables are in
#UD ftp://www-phys.llnl.gov/pub/rayleigh/asftab/
#UD An identical copy of the data is available in the RTAB directory:
#UD ftp://www-phys.llnl.gov/pub/rayleigh/RTAB/data_ASF/
#UD 2) Quoted from L. Kissel, Radiation physics and chemistry 59 (2000) 185-200:
#UD An interesting feature of our ASF values that differs from other authors
#UD is the explicit inclusion of the bound-bound resonant transitions.
#UD In our underlying model of single-electron transitions in a potential, a
#UD bound-bound resonant transition occurs at a single energy (our levels
#UD have no widths), the difference of the energies of the two orbitals
#UD involved in the transition. This infitely narrow transition is manifested
#UD as a delta-function spike in the imaginary scattering amplitude and a
#UD resonance approaching infinity in the real scattering amplitude. Although
#UD these explicit spikes and infities are unphysical, the underlying strength
#UD of the transition is important and contributes significantly to the
#UD scattering at low energies.
#UD 3) In the data in this file, a sixth column called f2 has been added to the
#UD original Kissel data for compatibility with other DABAX tables. Its value
#UD is equal to minus the column two.
#UD
#UD Column description: '
#UD 1:PhotonEnergy[KeV] 2:g''[=-f''CL=-f2] 3:g' 4:f' 5:f1 6:f2
#UD See the references for a better description of these quantities.
#UD
#C
#C The original README fime from Kissel follows here:
#UO Elastic Photon-Atom Scattering
#UO
#UO Information date: May 23, 1996 - lk
#UO
#UO This directory tree is accessible via anonymous ftp as:
#UO
#UO ftp://www-phys.llnl.gov/rayleigh
#UO
#UO It contains tables of data which support elastic photon scattering
#UO calculations. For an interactive interface to this information, see
#UO the URL:
#UO
#UO http://www-phys.llnl.gov/V_Div/scattering/elastic.html
#UO
#UO These data are computed for neutral atoms, only, entirely within a
#UO local relativistic self-consistent potential with the Slater
#UO local-exchange coefficient and Latter tail.
#UO
#UO The data contained within this directory tree are:
#UO
#UO ./asftab -- anomalous scattering factors
#UO ./rftab -- relativistic form factors (total atom, shell and subshell)
#UO ./mftab -- modified relativistic form factors (total atom, shell and
#UO subshell)
#UO ./procs -- scripts used to create the data files stored in the other
#UO directories
#UO
#UO Data for fixed atomic number, Z, is stored in separate files. For example,
#UO the anomalous scattering factors for neutral lead (Pb, Z=82) are stored in
#UO
#UO ./asftab/82_Pb_asf
#UO
#UO whereas the relativistic form factors are stored in
#UO
#UO ./rftab/82_Pb_rf
#UO
#UO and the modified relativistic form factors are stored in
#UO
#UO ./mftab/82_Pb_mf
#UO
#UO If you have comments about this information, please contact:
#UO
#UO Lynn Kissel, lkissel@llnl.gov
#UO
#UO For a detailed discussion of the underlying validity of the information
#UO contained in these directories see, for example:
#UO
#UO "Validity of Form-Factor, Modified-Form-Factor and
#UO Anomalous-Scattering-Factor Approximations in Elastic Scattering
#UO Calculations," by Lynn Kissel, B. Zhou, S. C. Roy, S. K. Sen Gupta and
#UO R. H. Pratt, Acta Crystallographica Vol. A51, 271-288 (1995).
#UO
#UO "New Relativistic S-Matrix Results for Scattering - Beyond the Usual
#UO Anomalous Factors/Beyond Impulse Approximation," by R. H. Pratt, Lynn
#UO Kissel and P. M. Bergstrom, Jr., in Resonant Anomalous X-Ray
#UO Scattering, edited by G. Materlik, C. J. Sparks and K. Fischer
#UO (North-Holland: Amsterdam, 1994).
#UO
#UO "Elastic Scattering of Gamma-Rays and X-Rays by Atoms," by
#UO P. P. Kane, Lynn Kissel, R. H. Pratt and S. C. Roy, Physics Reports
#UO Vol. 140, 75-159 (1986).
#UO
#UO "Rayleigh Scattering - Elastic Photon Scattering by Bound
#UO Electrons," by Lynn Kissel and R. H. Pratt, in Atomic Inner-Shell
#UO Physics