IJSTE - International Journal of Science Technology & Engineering | Volume 4 | Issue 8 | February 2018 ISSN (online): 2349-784X All rights reserved by www.ijste.org 45 Simulation of Nuclear Transmutation using PyNE- Nuclear Engineering Toolkit in Python Chirag Maheshkumar Sedani PG Student UPES, Bidholi-Dehradun, Uttarakhand, India Abstract Nuclear transmutation is a process in which conversion of one isotope into another isotope takes place as product of nuclear reactions. PyNE is nuclear engineering toolkit for python. In this paper simulation of transmutation is shown using PyNE in python. Initially PyNE was installed in python to access all the library files. PyNE has all the library file within itself, which has been imported and then simulation has been done. In this paper transmutation of Fe-56 is given. All the stages of transmutation are simulated and at the end total time required for transmutation is also given. Transmutation of any material can be performed using this toolkit under defined circumstances. Keywords: Nuclear Transmutation, PyNE, Python Simulation ________________________________________________________________________________________________________ I. INTRODUCTION Nuclear Transmutation To transmute means to convert one element in to another and by extension one isotope to another. The main physical process to perform useful transmutation is nuclear fission. One example of transmutation by fission can be: n + 239 Pu (24000 years)  134 Cs (2 years) + 104 Ru (stable) + 2 n + 200 MeV In above reaction 239 Pu and n (Neutron) interacts with fission process and produces 134 Cs, 104 Ru and 200 MeV. The nuclear transmutation is a possible concept of the nuclear fuel cycle that aims to transform a large fraction of long term source of radioactivity, radiotoxicity, and heat into stable or short lived (<30 years) materials i.e. plutonium and minor actinides. The final objective of transmutation is reducing the radiotoxicity and the volume of the high level waste of future reactors and fuel cycles to improve their sustainability. Also increasing the capacity of geological repository for the waste already produced and to be produced by the present reactors. Transmutation is induced by the irradiation of transuranic waste by high neutron fluxes. Transuranic waste will fission producing fission fragments and energy. Industrial transmutation requires intense neutron source and produce large amount of energy. It must be done in nuclear reactor. PyNE PyNE is a suite of tools to aid in computational nuclear science & engineering. PyNE seeks to provide native implementations of common nuclear algorithms, as well as Python bindings and I/O support for other industry standard nuclear codes [4]. II. LITERATURE SURVEY Oyeon kum [1] stated that, the CINDER code has about 60 years of development history, and is thus one of the world's best transmutation computing codes to date. Unfortunately, it is complex and cumbersome to use. Preparing auxiliary input files for activation computation from MCNPX output and executing them using Perl script (activation script) is the first difficulty, and separation of gamma source computing script (gamma script), which analyzes the spectra files produced by CINDER code and creates source definition format for MCNPX code, is the second difficulty. In addition, for highly nonlinear problems, multiple human in-terventions may increase the possibility of errors. Postprocessing such as making plots with large text outputs is also time consuming. One way to improve these limitations is to make a graphical user interface wrapper that includes all codes, such as MCNPX and CINDER, and all scripts (with a visual C#.NET tool). The graphical user interface merges all the codes and provides easy postprocessing of graphics data and Microsoft office tools, such as Excel sheets, which make the CINDER code easy to use. N.V. Ivanov [2] stated that, radioactivity of spent nuclear fuel (SNF) discharged from nuclear reactor core is determined during the first 100 years by fission fragments (FF), after that the main contribution in the SNF activity is made by actinides. Existing scenarios of SNF handling are based on the transmutation of minor actinides (MA) into fission fragments accomplished in fast reactors. Scenarios of transmutation of fission fragments in thermal and fast neutron spectra and time-dependent radiation characteristics are examined in the present study. Nuclide composition of fission fragments is taken from the results of simulation of burnup of 439GT fuel assembly (TVSA type) for VVER-1000 nuclear reactor during 3 years performed using MCU-5 software