An investigation of some ionizing radiation interaction parameters in selected composite scintillation materials

In this study, the interaction parameters of neutrons, charge particles
and gamma rays in seven inorganic scintillation materials with
densities ranged from 3.86 to 8.30 g/cm3 were theoretically examined.
SRIM Monte Carlo software was used to determine the range
of H+, He++, Au+and O−− ions in the energy range (0.01–20) MeV,
Phy-X/PSD while Py-MLBUF computer programs were used to estimate
gamma radiation interaction parameters in the energy range
(0.02–15) MeV. The electron total stopping power and range values
at energies ranging from 0.01 to 1000 MeV were calculated
using the ESTAR NIST program. The fast neutron removal crosssection
(FNRCS) and the macroscopic effective removal cross-section
(MRCS) were calculated using the Phy-X/PSD and MRCS tools, respectively.
The outcomes of this research showed that the range of
H+, He++, Au+and O−− ions increased with decreasing sample density
but decreased with increasing projectile energies; the largest
range of H+is 2090 μm in the lowest density S1 sample, while the
range of Au+ is 5.16 μm in the same sample. The denser sample S7
had the highest stopping power and the lowest range at higher electron
energies. The S1 sample had the highest calculated HVL value of
5.403 cm, while the S7 sample had the lowest calculated HVL value of
0.0008 cm. Rising sample density causes the MAC to rise, while rising
gamma energy causes the MAC to decrease. The highest MAC value
recorded was 107 cm2/g at 0.015 MeV in the S7 sample, and the lowest
value recorded was 0.0369 cm2/g at 15 MeV in the S1 sample. For
all inorganic scintillation samples at particular gamma energies, the
standard deviations for the MAC, HVL and Zeff values between the
Phy-X/PSD and, Py-MLBUF programs were calculated. With energy
range variation, the results for Zeff for the two samples S2 and S4
appeared to be constant. Regards to the fast neutrons, the heights
value’s of FNRCS, and MRCS were recorded for S7.