
The DXS data files contain displacement damage cross-section data
prepared in ENDF/B format for neutron and proton induced reactions
from 10-5 eV to 3 GeV on Al, Ti, V, Cr, Fe, Ni, Cu, Zr, and W.

A.Yu. Konobeyev, U. Fischer, Karlsruhe Institute of Technology, 2011


Method of evalaution and file contents
-----------------------------------------------------

The numbers of defects in irradiated materials were calculated using 
the binary collision approximation model (BCA) and results of 
molecular dynamics simulations (MD). The details about the BCA-MD 
approach can be found in [1-6]. The use of BCA-MD for displacement 
cross-section calculations shows the better agreement with available
experimental data comparing with the common NRT model [7], as 
discussed in [1,2]. 

Nuclear data used for the recoil spectra calculation at incident
nucleon energies below several MeV were taken from ENDF/B-VII and
were processed using the NJOY code. At higher energies the nuclear
recoil spectra were calculated using the model describing the 
scattering of charged particles in the matter, the optical model, 
the pre-equilibrium model, and the intranuclear cascade evaporation
model (INC) [1-5]. At intermediate energies of primary particles 
the reliability of obtained displacement cross-sections was 
improved by using of weighted results of calculations performed by
various modifications of INC models [1-3]. 

The results of MD modelling used to prepare displacement cross-
sections were taken for Al from Ref.[8], Ti from Ref.[9], V from 
Ref.[10], Cr and Fe from Ref.[11], Ni from Ref.[9], Cu from Ref.[12],
Zr from Refs.[13,14], and W from Ref.[12].

The temperature shown in the files corresponds mainly to the MD 
simulation. The possible influence of the temperature on the number
of created defects in materials under ion irradiation seems less
important as the influence of interatomic potential on results of
MD calculations. (See the NF values for copper at 10 K from Ref.[12]
and ones at 100-900 K from Ref.[15]).

Files DXS include also displacement cross-sections prepared using
the NRT model. As the rule the data are higher as cross-sections
obtained using the BCA-MD approach. 

The effective threshold displacement cross-section Ed was taken 
equal to 27 eV for Al, 40 eV for Ti, V, Cr, Fe, Ni, and Zr, 30 eV
for Cu, and 90 eV for W. 

  
Units of the data
----------------- 
Energy is given in eV, displacement cross-sections in barns. 


References
----------
[1]  A.Yu.Konobeyev, U.Fischer, Advanced Evaluations of Displacement
     and Gas Production Cross-Sections for Chromium, Iron, and Nickel 
     up to 3 GeV Incident Particle Energy, Int. Meeting on Nuclear 
     Applications of Accelerators (AccApp'11), Knoxville, TN, April 
     3-7, 2011
[2]  A.Yu.Konobeyev, C.H.M.Broeders, U.Fischer, Int. Meeting on 
     Nuclear Applications and Utilization of Accelerators (AccApp'07)
     Pocatello, US, July 29-Aug.2, 2007, p.241
[3]  A.Yu.Konobeyev, U.Fischer, L.Zanini, Int. Conf. on Emerging 
     Nuclear Energy Systems, (ICENES 2009), Ericeira, Portugal, 
     June 29-July 3, 2009
[4]  C.H.M.Broeders, A.Yu.Konobeyev, J.Nucl.Mater. 336 (2005) 201
[5]  C.H.M.Broeders, A.Yu.Konobeyev, C.Villagrasa, J.Nucl.Mater. 
     342 (2005) 68 
[6]  C.H.M.Broeders, A.Yu.Konobeyev, K.Voukelatou, IOTA - a Code to 
     Study Ion Transport and Radiation Damage in Composite Materials, 
     FZKA 6984 (2004);
     http://bibliothek.fzk.de/zb/berichte/FZKA6984.pdf
[7]  M.J.Norgett, M.T.Robinson, I.M.Torrens, Nucl.Eng.Des.33 (1975)50
[8]  A.Almazouzi et al, 1998 cited by [8]
[9]  D.J.Bacon, F.Gao, Yu.N.Osetsky, J.Nucl.Mater. 276 (2000) 1
[10] C.Bjoerkas, K.Nordlund, S.Dudarev, Nucl. Instr. Meth. B267 
     (2009) 3204
[11] K.Voertler, C.Bjoerkas, D.Terentyev, L.Malerba, K.Nordlund, 
     J.Nucl.Mater. 382 (2008) 24
[12] M.J.Caturla, T.Diaz de la Rubia, M.Victoria, R.K.Corzine, M.R.James, 
     G.A.Greene, J.Nucl.Mater. 296 (2001) 90
[13] F.Gao, D.J.Bacon, L.M.Howe, C.B.So, J. Nucl. Mater. 294 (2001) 288
[14] R.E.Voskoboinikov, Yu.N.Osetsky, D.J.Bacon, Nucl. Instr. Meth.
     B242 (2006) 68
[15] R.E.Voskoboinikov, Yu.N.Osetsky, D.J.Bacon, J.Nucl. Mater. 377
     (2008) 385
