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The use of tantalum foil in the study of production and transport of neutrons in assemblies with lead target irradiated by high energy deuterons. Autor: Ondřej Novák Konzultant: RNDr . Vladimír Wagner, CSc. Introduction. Problem of nuclear energy – long half – life of nuclear w aste

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autor ond ej nov k konzultant rndr vladim r wagner csc

The use of tantalum foil in the study of production and transport of neutrons in assemblies with lead target irradiated by high energy deuterons

Autor: Ondřej Novák

Konzultant: RNDr. Vladimír Wagner, CSc

introduction
Introduction
  • Problem of nuclear energy – long half – life of nuclear waste
  • Solution= Transmutation
    • Changing stability of radioisotope by interaction of neutron
    • Shorter half - life
main goal
Main goal:
  • To measure the quantity, spatial distribution and energy of neutrons in the transmutation system by tantalum foil
threshold energy
Thresholdenergy
  • Energy, which is the lowiest for special (n,xn) reaction
spectra analysis
Spectra analysis
  • Fit of peaks by special (Gauss) function
    • Integral area
data analysis
Data analysis
  • The measured amount of gamma-rays of special line was calculated to obtain the total number of radioisotope with specific line.
  • The total number of nuclei of specific isotope was calculated from these values by using the formula for the weighted average
reaction 181 ta n 3n 179 ta
Reaction181Ta (n,3n)179Ta
  • Half - life is too long or too short
  • 179mTa 9 ms => stable 179Hf
  • 179Ta 1,87 year
experiment simulation
experiment - simulation
  • The total number of neutrons(indirect)
    • Simulation describe whole system
    • Experiment only few places
slide13

End

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