The gamma-ray and fast/thermal neutron shielding properties of bismo-borate glasses modified with NdO in the form BO–BiO–SrO-NdO (BBSN0.0-BBSN5.7) were investigated. The newly developed Phy-X/PSD software and Geant4 simulation code were performed to achieve this goal by evaluating several parameters such as MAC, gamma photons dose rate, FNRCS, and scattering/absorption lengths and cross sections for thermal neutrons. At low photon energy; 0.015 MeV, MAC values varied from 76.72, 76.57, 76.43, 76.29, 76.10, and 75.93 cm g for BBSN0.0, BBSN1.0, BBSN2.0, BBSN3.0, BBSN4.3, and BBSN5.7, respectively. The HVL followed reversible trend as follows; BBSN0.0 > BBSN1.0 > BBSN2.0 > BBSN3.0 > BBSN4.3 > BBSN5.7. The highest values for Z were found at low energy photon range (0.015 MeV) with the values of 76.71, 76.35, 76.00, 75.65, 75.21, and 74.75, while the lowest values were found at 1.5 MeV; 21.32, 21.42, 21.52, 21.61, 21.73, and 21.87 for BBSN0.0 – BBSN5.7, respectively. The gamma dose rate has a dramatic decrease with increasing the glass thickness from 1 mm to 5 mm. Furthermore, glasses with the highest concentration of NdO show the best thermal/fast neutron shielding capability among the investigated glasses. One can conclude that BBSN5.7 glass owns the best shielding capacity among all BBSN glasses due to the highest LAC values comparing to other selected ones.

中文翻译：

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Nd2O3 改性 B2O3–Bi2O3–SrO 玻璃的核屏蔽性能：理论和模拟研究


研究了 BO-Bi2O-SrO-NdO (BBSN0.0-BBSN5.7) 形式的 NdO 修饰的双硼酸盐玻璃的伽马射线和快/热中子屏蔽性能。新开发的 Phy-X/PSD 软件和 Geant4 模拟代码通过评估 MAC、伽马光子剂量率、FNRCS 以及热中子的散射/吸收长度和横截面等多个参数来实现这一目标。在低光子能量下； 0.015 MeV，BBSN0.0、BBSN1.0、BBSN2.0、BBSN3.0、BBSN4.3 和 BBSN5.7 的 MAC 值分别为 76.72、76.57、76.43、76.29、76.10 和 75.93 cm g。 HVL遵循如下可逆趋势： BBSN0.0 > BBSN1.0 > BBSN2.0 > BBSN3.0 > BBSN4.3 > BBSN5.7。 Z 的最高值出现在低能光子范围 (0.015 MeV)，值为 76.71、76.35、76.00、75.65、75.21 和 74.75，而最低值出现在 1.5 MeV； BBSN0.0 – BBSN5.7 分别为 21.32、21.42、21.52、21.61、21.73 和 21.87。随着玻璃厚度从 1 毫米增加到 5 毫米，伽马剂量率急剧下降。此外，在所研究的玻璃中，具有最高浓度 NdO 的玻璃表现出最好的热/快中子屏蔽能力。可以得出结论，BBSN5.7 玻璃在所有 BBSN 玻璃中拥有最好的屏蔽能力，因为与其他选定的玻璃相比，其 LAC 值最高。