Application of a Bonner sphere spectrometer for determination of the energy spectra of neutrons generated by ≈1 MJ plasma focus.
The spectra of neutrons outside the plasma focus device PF-1000 with an upper energy limit of ≈1 MJ was measured using a Bonner spheres spectrometer in which the active detector of thermal neutrons was replaced by nine thermoluminescent chips. As an a priori spectrum for the unfolding procedure, the spectrum calculated by means of the Monte Carlo method with a simplified model of the discharge chamber was selected. Differences between unfolded and calculated spectra are discussed with respect to properties of the discharge vessel and the laboratory layout.
Czech Metrology Institute, 102 00 Prague 10, Czech Republic. mkralik@cmi.cz
M
M
Králík
J
J
Krása
A
A
Velyhan
M
M
Scholz
I M
IM
Ivanova-Stanik
B
B
Bienkowska
R
R
Miklaszewski
H
H
Schmidt
K
K
Řezáč
D
D
Klír
J
J
Kravárik
P
P
Kubeš