Study of (n,2n) reaction on 191,193Ir isotopes and isomeric cross section ratios
The cross section of 191Ir(n,2n)190Irg+m1 and 191Ir(n,2n)190Irm2 reactions has been measured at 17.1 and 20.9 MeV neutron energies at the 5.5 MV tandem T11/25 Accelerator Laboratory of NCSR “Demokritos”, using the activation method. The neutron beams were produced by means of the 3H(d,n)4He reaction...
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doaj-0b75121d35a9474bb2c40d4d7a05636a2021-08-02T08:47:28ZengEDP SciencesEPJ Web of Conferences2100-014X2017-01-011461101310.1051/epjconf/201714611013epjconf-nd2016_11013Study of (n,2n) reaction on 191,193Ir isotopes and isomeric cross section ratiosVlastou R.0Kalamara A.1Kokkoris M.2Patronis N.3Serris M.4Georgoulakis M.5Hassapoglou S.6Kobothanasis K.7Axiotis M.8Lagoyannis A.9Department of Physics, National Technical University of AthensDepartment of Physics, National Technical University of AthensDepartment of Physics, National Technical University of AthensDepartment of Physics, University of IoanninaHellenic Army AcademyDepartment of Physics, National Technical University of AthensDepartment of Physics, National Technical University of AthensDepartment of Physics, National Technical University of AthensInstitute of Nuclear and Particle Physics, NCSR “Demokritos”Institute of Nuclear and Particle Physics, NCSR “Demokritos”The cross section of 191Ir(n,2n)190Irg+m1 and 191Ir(n,2n)190Irm2 reactions has been measured at 17.1 and 20.9 MeV neutron energies at the 5.5 MV tandem T11/25 Accelerator Laboratory of NCSR “Demokritos”, using the activation method. The neutron beams were produced by means of the 3H(d,n)4He reaction at a flux of the order of 2 × 105 n/cm2s. The neutron flux has been deduced implementing the 27Al(n,α) reaction, while the flux variation of the neutron beam was monitored by using a BF3 detector. The 193Ir(n,2n)192Ir reaction cross section has also been determined, taking into account the contribution from the contaminant 191Ir(n,γ)192Ir reaction. The correction method is based on the existing data in ENDF for the contaminant reaction, convoluted with the neutron spectra which have been extensively studied by means of simulations using the NeusDesc and MCNP codes. Statistical model calculations using the code EMPIRE 3.2.2 and taking into account pre-equilibrium emission, have been performed on the data measured in this work as well as on data reported in literature.https://doi.org/10.1051/epjconf/201714611013 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Vlastou R. Kalamara A. Kokkoris M. Patronis N. Serris M. Georgoulakis M. Hassapoglou S. Kobothanasis K. Axiotis M. Lagoyannis A. |
spellingShingle |
Vlastou R. Kalamara A. Kokkoris M. Patronis N. Serris M. Georgoulakis M. Hassapoglou S. Kobothanasis K. Axiotis M. Lagoyannis A. Study of (n,2n) reaction on 191,193Ir isotopes and isomeric cross section ratios EPJ Web of Conferences |
author_facet |
Vlastou R. Kalamara A. Kokkoris M. Patronis N. Serris M. Georgoulakis M. Hassapoglou S. Kobothanasis K. Axiotis M. Lagoyannis A. |
author_sort |
Vlastou R. |
title |
Study of (n,2n) reaction on 191,193Ir isotopes and isomeric cross section ratios |
title_short |
Study of (n,2n) reaction on 191,193Ir isotopes and isomeric cross section ratios |
title_full |
Study of (n,2n) reaction on 191,193Ir isotopes and isomeric cross section ratios |
title_fullStr |
Study of (n,2n) reaction on 191,193Ir isotopes and isomeric cross section ratios |
title_full_unstemmed |
Study of (n,2n) reaction on 191,193Ir isotopes and isomeric cross section ratios |
title_sort |
study of (n,2n) reaction on 191,193ir isotopes and isomeric cross section ratios |
publisher |
EDP Sciences |
series |
EPJ Web of Conferences |
issn |
2100-014X |
publishDate |
2017-01-01 |
description |
The cross section of 191Ir(n,2n)190Irg+m1 and 191Ir(n,2n)190Irm2 reactions has been measured at 17.1 and 20.9 MeV neutron energies at the 5.5 MV tandem T11/25 Accelerator Laboratory of NCSR “Demokritos”, using the activation method. The neutron beams were produced by means of the 3H(d,n)4He reaction at a flux of the order of 2 × 105 n/cm2s. The neutron flux has been deduced implementing the 27Al(n,α) reaction, while the flux variation of the neutron beam was monitored by using a BF3 detector. The 193Ir(n,2n)192Ir reaction cross section has also been determined, taking into account the contribution from the contaminant 191Ir(n,γ)192Ir reaction. The correction method is based on the existing data in ENDF for the contaminant reaction, convoluted with the neutron spectra which have been extensively studied by means of simulations using the NeusDesc and MCNP codes. Statistical model calculations using the code EMPIRE 3.2.2 and taking into account pre-equilibrium emission, have been performed on the data measured in this work as well as on data reported in literature. |
url |
https://doi.org/10.1051/epjconf/201714611013 |
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