Activation Cross Section Measurement of the (n,2n) Reaction on 203Tl at 16.4 MeV, 18.9 MeV and Theoretical Calculations via the EMPIRE code

HNPS Advances in Nuclear Physics vol. 29 (HNPS2022)
Published: May 5, 2023
thallium cross section neutron activation analysis Monte Carlo simulation Empire code theoretical calculations
Stavros Patas
Sotiris Chasapoglou
Michalis Axiotis
Maria Diakaki
George Gkatis
Sotirios Harissopulos
Michael Kokkoris
Anastasios Lagoyannis
Eleni Tsivouraki
Roza Vlastou

The aim of the present work was to study the cross-section of the (n,2n) and (n,3n)  reactions on 203Tl, by irradiating a natural TlCl pellet target with monoenergetic neutron beams at 16.4, and 18.9 MeV. The cross section measurements were carried out using the activation method, with respect to the 197Au(n,2n)196Au and 27Al(n,α)24Na reference reactions. The monoenergetic neutron beams were generated in the 5.5 MV Tandem accelerator of NCSR “Demokritos”, using the 3H(d,n)4He reaction. Monte Carlo simulations have been performed to take into account the gamma-ray self-absorption results as well as the estimation of the neutron flux through the reference foils. Theoretical calculations with the code EMPIRE have also been performed, using the same parameterization implemented in the theoretical study of Ir and Au nuclei in an attempt to find a suitable model for the description of all the experimental results in this mass region.

Article Details
  • Section
  • Poster contributions
P. Talou et al., Nucl. Sci. Eng. 155, 84 (2007)
A. Fessler et al., Nucl. Sci. Eng. 134, 171 (2000)
M. B. Chadwick et al., Nucl. Data Sheets 108, 2716 (2007)
X-5 Monte Carlo team, MCNP-A General Monte Carlo N-ParticleTransport Code, version 5, Volume I-III, LAUR-03-1987, LA-CP-03 0245 and LA-CP-03-0284 (April, 2003)
M. Herman et al., Nucl. Data Sheets 108, 2655 (2007)
D. Wilmore and P. E. Hodgson, Nucl. Phys. 55, 673 (1964)
A. D’Arrigo et al., J. Phys. G 20, 365 (1994)
A .Kalamara et al., Phys. Rev. C98, 034607 (2018)
A. Kalamara et al., Phys. Rev. C97, 034615 (2018)
J. Frehaut et al., Conf. U.S. report to the I.N.D.C., No.84, Vol.(1), 399, Austria (1980)