Photon Strength Function Database

Experimental data

The PSF database contains all the experimental PSF data that were compiled by the IAEA CRP on Generating a Reference Database for Photon Strength Functions [CRP-photonuclear]. The methods that have been used to extract experimental PSF data are extensively described and assessed in the CRP technical report that is published in [1], and in the recent IAEA reports [2,3,4].

The data files naming convention is self-explanatory and includes: the type and multipolarity of the PSF XL={E1|E2|M1|1} (1 stands for E1+M1), if it is experimental or theoretical data, nuclide (Z,A), method used (NRF, OM, ARC/DRC, pg, pp, RM, photonuclear), NSR keynumber is added for photonuclear data.

f{XL}_{exp|the}_Z_A_method[_NSRKeyNo].dat, e.g. fe1_exp_012_024_photoabs_1966Dol.dat, f1_exp_042_097_OM_3he_2.dat

Each data file is accompanied by a README file with the same naming convention but with the extension ‘readme’. The README file contains all the information about the measurement, the experimental method, the model dependent analysis and parameters as well as the reference.

An interface that would allow the user to plot and compare the measured PSFs is under construction.

Theoretical data

Theoretical PSF data recommended by the IAEA CRP on Reference Database for Photon Strength Functions are also available for downloading. These theoretical PSFs were validated according to the CRP prescription [1].

Two global models have been used to perform global calculations of E1 and M1 PSFs for all nuclides across the nuclear chart: the D1M-QRPA and SMLO. Details about the models and calculations are available in [1,5,6,7].

The files contain PSFs in units of [MeV-3] at various excitation energies U (QRPA files) or temperature T (SMLO files) so that they can be used for de-excitation processes. Note that for photoabsorption, U=0 or T=0, while for de-excitation the user needs to use the relation: U=aT2 with a=A/10.

The entire experimental and theoretical database can be downloaded [here].

Other models

Theoretical PSF data generated by the triple Lorentzian model (TLO) [8] are now also available for dowloading. The folder contains the source files for generating the PSF data as well as the data files themselves. These PSFs have not been validated according to the CRP prescription [1]. [download]

[1] S. Goriely et al., The European Physical Journal A 55, 172 (2019).
[2] J. Kopecky, Photon Strength Functions in Thermal Capture, INDC(NDS)-0799.
[3] J. Kopecky, Photon Strength Functions in Thermal Capture II, INDC(NDS)-0815.
[4] J. Kopecky, S. Goriely, Strength Functions Derived from The Discrete And Average Neutron Resonance Capture, INDC(NDS)-0790.
[5] S. Goriely, S. Hilaire, S. Péru, K. Sieja, Phys. Rev. C 98, 014327 (2018).
[6] V. Plujko, O. Gorbachenko, R. Capote, P. Dimitriou, At. Data Nucl. Data Tables 123, 1 (2018).
[7] S. Goriely, V. Plujko, Phys. Rev. C 99, 014303 (2018).
[8] E. Grosse, A. Junghans, Massarczyk, The European Physical Journal A 53, 225 (2017).