Gamma-ray, fast neutron and ion shielding characteristics of low-density and high-entropy Mg-Al-Ti-V-Cr-Fe-Zr-Nb alloy systems using Phy-X/PSD and SRIM programs.

Karakteristik pemerisaian sinar gama, neutron cepat, dan ion dari sistem paduan Mg-Al-Ti-V-Cr-Fe-Zr-Nb berdensitas rendah dan berentropi tinggi menggunakan program Phy-X/PSD dan SRIM.

Clicks: 88
ID: 278686
2023
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Abstract
This study aimed to assess the radiation shielding properties of ten low-density high-entropy alloys (LWHEAs) using Phy-X/PSD software to analyze various shielding parameters, such as attenuation coefficients ( and ), mean free path (), effective atomic number (), and removal cross-section (), in the energy range of Image 1 to Image 2. A comprehensive evaluation was performed to compare the attenuation outcomes provided by HEAs with a range of shielding materials documented in the literature. The study also calculated the build-up factors (BUFs) of the alloys by using the GP-fitting interpolation method. The stopping power of the alloys against ions was analyzed using the SRIM Monte Carlo code, considering total stopping power (TSP) and projected range (PR). The results indicated that HEA8 () had the best performance in terms of shielding against -rays, fast neutrons, and ions, as it achieved the highest values of parameters such as , , , and , along with the lowest values of HVL, TVL, , BUFs (Image 3 Image 4), TSP, and PR. On the other hand, HEA10 () had the lowest BUFs in both lower (Image 5 Image 4) and higher (Image 6 Image 4) energy regions. The order of for the alloys was found to be . The study concluded that LWHEAs possess superior radiation shielding properties compared to conventional materials, making them a promising new class of materials for radiation shielding applications.
Penelitian ini bertujuan untuk menilai sifat perisai radiasi dari sepuluh paduan entropi tinggi densitas rendah (LWHEA) menggunakan perangkat lunak Phy-X/PSD guna menganalisis berbagai parameter perisai, seperti koefisien atenuasi ( and ), lintasan bebas rata-rata (), nomor atom efektif (), dan penampang lintang pemindahan (), dalam rentang energi Image 1 hingga Image 2. Evaluasi komprehensif dilakukan untuk membandingkan hasil atenuasi yang diberikan oleh HEA dengan berbagai material perisai yang terdokumentasi dalam literatur. Penelitian ini juga menghitung faktor penumpukan (BUF) dari paduan-paduan tersebut dengan menggunakan metode interpolasi pencocokan GP (GP-fitting). Daya henti paduan terhadap ion dianalisis menggunakan kode Monte Carlo SRIM, dengan mempertimbangkan daya henti total (TSP) dan jangkauan terproyeksi (PR). Hasil penelitian menunjukkan bahwa HEA8 () memiliki kinerja terbaik dalam hal perisai terhadap sinar-, neutron cepat, dan ion , karena mencapai nilai tertinggi untuk parameter seperti , , , dan , bersama dengan nilai terendah untuk HVL, TVL, , BUF (Image 3 Image 4), TSP, dan PR. Di sisi lain, HEA10 () memiliki BUF terendah baik pada daerah energi yang lebih rendah (Image 5 Image 4) maupun yang lebih tinggi (Image 6 Image 4). Urutan untuk paduan-paduan tersebut ditemukan berupa . Penelitian ini menyimpulkan bahwa LWHEA memiliki sifat perisai radiasi yang lebih unggul dibandingkan material konvensional, menjadikannya kelas material baru yang menjanjikan untuk aplikasi perisai radiasi.
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Authors Subedi, Basanta;Paudel, Jeevan;Lamichhane, Tika Ram;
Journal Heliyon
Year 2023
DOI
e17725
URL
Keywords
absorption coefficients phy-x/psd build-up factors (bufs) high-entropy alloys (heas) removal cross-section () srim stopping power (tsp)

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