Paraskevi (Vivian) Dimitriou
Library released on October 31, 2022  (Last updated on October 31, 2022).
P. Oblozinsky (chair), P. Dimitriou, S. Goriely, Xu Ruirui, Tian Yuan, M. Krticka, R. Schwengner, T. Belgya, N. Iwamoto, H. Utsunomiya, Y.S. Cho, J. Kopecky, S. Siem, R. B. Firestone, T. Kawano, D. M. Filipescu, V.V. Varlamov, V. Plujko, M. Wiedeking
T. Kawano, Y.S. Cho, P. Dimitriou, D. Filipescu, N. Iwamoto, V. Plujko, X. Tao, H. Utsunomiya, V. Varlamov, R. Xu, R. Capote, I. Gheorghe, O. Gorbachenko, Y.L. Jin, T. Renstrm, M. Sin, K. Stopani, Y. Tian, G.M. Tveten, J.M. Wang, T. Belgya, R. Firestone, S. Goriely, J. Kopecky, M. Krticka, R. Schwengner, S. Siem and M. Wiedeking, Nuclear Data Sheets 163 (2020) 109-162. Also available as a preliminary version at arXiv 1908.00471 (2019).
Photo-induced reaction cross section data are of importance for a variety of current or emerging applications, such as radiation shielding design and radiation transport analyses, calculations of absorbed dose in the human body during radiotherapy, physics and technology of fission reactors (influence of photo-reactions on neutron balance) and fusion reactors (plasma diagnostics and shielding), activation analyses, safeguards and inspection technologies, nuclear waste transmutation, medical isotope production and astrophysical applications.
A new Evaluated Photonuclear Library PD-2019 was produced by the IAEA Coordinated Research Project (CRP). Extensive experimental measurements were also undertaken under the project which was of great help for new evaluations. In particular, collaboration measurements undertaken at the LCS NewSUBARU facility (Laboratory of Advanced Science and Technology for Industry, University of Hyogo, Japan) were critical for the success of the project. Both experimental and evaluation efforts carried out within the CRP to update the IAEA Photonuclear Data Library are explained in Kawano et al., Nuclear Data Sheets 163 (2020) 109-162. The new library includes 199 mostly new evaluations, 20 evaluations were retained from the previous 1999 IAEA Photonuclear Data Library (IAEA/PD-1999).
ENDF-6 formatted library
The library contains evaluated photonuclear data for 219 isotopes for incident photons (gamma rays) with energies mostly up to 200 MeV. The list of the files are available here. The library includes cross sections and emission spectra in ENDF-6 format. The file format description is explained in the report IAEA-NDS-0232. The ENDF-6 formatted individual evaluations are available at IAEA GitHub site. The complete ENDF-6 library can be downloaded as a compressed (tar.gz) archive under the following link:
To untar the files, use the command
tar -zxvf filename.tar.gz on Unix or MacOS.
Application files (ACE)
The ace files in the subdirectories have been produced by ACEMAKER. For details regarding the processing, consult this report.
For each material, several ace files are available and differ in regard to the inclusion of delayed neutron data for photo-fission and the inclusion of production cross-sections. Files that contain production cross-sections are provided in two forms (
Prod, MT>1000 and
Prod, MT<1000). They include the same data but use different MT number assignments for production data due to the fact that MCNP 6.2 cannot handle production MT numbers greater than 999. See the next section for details.
The table below summarizes the available files and indicates what data are included in the ace files.
|No Production||Prod, MT>1000||Prod, MT<1000|
Coding of production cross sections
Production cross-sections can be used as tallies in Monte Carlo transport codes. For photonuclear ACE files, production data is included in the same file as the cross-sections for transport calculations. In the archives ZP1N_.tar.gz and ZP1N1.tar.gz, long MT numbers for production are used, which are not yet supported by MCNP 6.2. The associations are described in the corresponding txt files. For instance, the following lines from the file
g_26-Fe-56-2631.txt for Fe-53,
i MT/MTD Q [MeV] T [MeV] LMF MT ZAP LFS ... 211 50026053 0.000000 36.000000 6 5 26053 0 212 51026053 0.000000 38.000000 6 5 26053 1 ...
indicate that the MT number
50026053 is associated with the production of the isotope Fe-53 (given in the column
ZAP) in the ground state (
LFS=0). Analogously, MT number
51026053 gives the same product in a meta-stable level indicated by
In the ace files of the archives ZP2N_.tar.gz and ZP2N1.tar.gz, short MT numbers for production are used, which are supported by MCNP 6.2. The assocations are described in the corresponding txt files. Taking the same example as above,
i MT/MTD Q [MeV] T [MeV] LMF MT ZAP LFS ... 211 428 0.000000 36.000000 6 5 26053 0 212 429 0.000000 38.000000 6 5 26053 1 ...
now the MT number associated with the production of Fe-53 in ground state is
428 and for the production of the meta stable level is
Derived activation libraries
An activation library prepared at the IAEA Nuclear Data Section by
H. Kawada (Tokyo Institute of Technology, Japan), J.-Ch. Sublet and S. Okumura (IAEA), and T. Kawano (LANL, USA), is described
in the report on "Processing of the Evaluated Photonuclear Data Library (IAEA-PD2019)" available as IAEA-NDS-0232.
The processed activation files
can be also retrieved from the IAEA Github as individual files (*.endf, *.pdf, etc) and tar compressed file (*.tar.gz) as follows.
|File type||Filename (.tar.gz)|
|EVAPLOT check/plot (Activation)||graphs.tar.gz|
|FISPACT-II 162 gprs files
|Linearised ENDF file (PENDF)||hendf.tar.gz|