Accesso libero

Conversion of fast neutrons for neutron radiography with TPX2 detector

Andrea Šagátová
Andrea Šagátová
, 
Marko Fülöp
Marko Fülöp
, 
Andrej Novák
Andrej Novák
, 
Branislav Vrban
Branislav Vrban
, 
Jakub Lüley
Jakub Lüley
, 
Štefan Čerba
Štefan Čerba
, 
Ivan Benkovský
Ivan Benkovský
 e 
Bohumír Zaťko
Bohumír Zaťko
   | 25 giu 2024
Nukleonika's Cover Image
INFORMAZIONI SU QUESTO ARTICOLO
Articolo precedente
Articolo Successivo
Cita
Article Category: Original Paper
Pubblicato online: 25 giu 2024
Pagine: 135 - 140
Ricevuto: 21 nov 2023
Accettato: 08 mag 2024
DOI: https://doi.org/10.2478/nuka-2024-0020
Parole chiave
© 2024 Andrea Šagátová et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1.

Schematic cross-section view of TPX2 chip bump-bonded to Si sensor with examples of neutron registration: through conversion in polyethylene (left) or by nuclear reaction with Si nucleus (right).
Schematic cross-section view of TPX2 chip bump-bonded to Si sensor with examples of neutron registration: through conversion in polyethylene (left) or by nuclear reaction with Si nucleus (right).

Fig. 2.

The photograph of the MiniPIX TPX2 detector with applied layers (left). The X-ray image of the layers applied on the sensor substrate (middle). Areas of the sensor covered by different converter layers in color (right).
The photograph of the MiniPIX TPX2 detector with applied layers (left). The X-ray image of the layers applied on the sensor substrate (middle). Areas of the sensor covered by different converter layers in color (right).

Fig. 3.

Arrangement of experimental testing of the TPX2 detector by fast neutrons.
Arrangement of experimental testing of the TPX2 detector by fast neutrons.

Fig. 4.

Tracks of the first 2000 particles registered by the TPX2 detector with applied filtration are described in the left column for two energies of interacting neutrons: 3.55 MeV (middle column) and 15.7 MeV (right column).
Tracks of the first 2000 particles registered by the TPX2 detector with applied filtration are described in the left column for two energies of interacting neutrons: 3.55 MeV (middle column) and 15.7 MeV (right column).

Fig. 5.

The cross-sections of selected reactions on 28Si and elastic scattering on 1H, 12C, 14N, and 16O as a function of neutron kinetic energy obtained from ENDF/B-VII.1 [24].
The cross-sections of selected reactions on 28Si and elastic scattering on 1H, 12C, 14N, and 16O as a function of neutron kinetic energy obtained from ENDF/B-VII.1 [24].

Selected interactions of fast neutrons in Si sensor and conversion layer with their Q values and total energy of recoils for interacting neutrons with kinetic energy of 3.55 MeV and 15.7 MeV with parameters for elastic scattering on hydrogen in the converter layer

Interaction Q value (MeV) Total kinetic energy of charged recoils (MeV)
@ 3.55 MeV neutrons @ 15.7 MeV neutrons
28Si(n,n′)28Si (elastic sc.) 0 up to 0.47 up to 2.09
28Si(n,n′)28Si* −1.779 1.771 13.921
28Si(n,α)25Mg −2.654 0.896 13.046
28Si(n,α)25Mg* −3.239 0.311 12.461
28Si(n,α)25Mg** −3.628 − 12.072
28Si(n,α)25Mg*** −4.266 − 11.434
28Si(n,α)25Mg**** −4.618 − 11.082
28Si(n,α)25Mg***** −5.455 − 10.245
28Si(n,α)25Mg****** −6.059 − 9.641
28Si(n,p)28Al −3.860 − 11.840
28Si(n,d)27Al −9.360 − 6.340
28Si(n,γ)29Si 8.474 12.024 24.174
H(n,p)n 0 up to 3.55 up to 15.7

Projected ranges of protons in converter layers applied on the sensor surface according to SRIM [21]

Proton energy (MeV) Kapton polyimide film C22H10N2O5 (1.42 g/cm3, 10 μm) Polyethylene (C2H4)n (0.93 g/cm3, 50–150 μm)
Projected range (μm)
3.55 152.24 190
15.70 2090 2700
eISSN:
1508-5791
Lingua:
Inglese
Frequenza di pubblicazione:
4 volte all'anno
Argomenti della rivista:
Chemistry, Nuclear Chemistry, Physics, Astronomy and Astrophysics, other
Feed RSS della rivista