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Manuscript Title: Activity Computer Program for Calculating Ion Irradiation Activation
Authors: Ben Palmer
Program title: Activity
Catalogue identifier: AFBS_v1_0
Distribution format: tar.gz
Journal reference: Comput. Phys. Commun. 216(2017)126
Programming language: Fortran.
Computer: PCs or HPCs.
Operating system: Linux (tested on Debian).
Has the code been vectorised or parallelized?: OpenMPI
RAM: 250MB per process + 200MB overhead
Keywords: Ion Irradiation Activation Bateman Transmutation Decay.
Classification: 2.2, 17.8.

Nature of problem:
To calculate the predicted activity of an ion irradiated target. The expected range of ion energies is between 1MeV and 200MeV; this is the range of the available ion cross section data.

Solution method:
The program loads cross section data from the TENDL database and trajectory data from a SRIM [1] simulation exyz data file. It uses this data to calculate the production/loss rate of each isotope in the simulated target. Radioactive decay equations are used to calculate the amounts and activity of each radioactive isotope at the set time.

Running time:
Typically the Activity program runs each input from seconds to no more than several minutes.

References:
[1] SRIM - The stopping and range of ions in matter (2010). Ziegler, James F., Ziegler, M. D. and Biersack, J. P. 2010, Nuclear Instruments and Methods in Physics Research Section B, Vol. 268, pp. 1818-1823.