Simulation studies for gamma ray shielding properties of Halloysite nanotubes using MCNP-5 code

Area of Science:

• Materials Science
• Nuclear Physics
• Geochemistry

Background:

• Halloysite clay, a natural mineral, has diverse applications in catalysis, extraction, and drug delivery.
• Understanding the radiation shielding capabilities of Halloysite is crucial for its safe application.
• Nanotube modifications may alter the shielding properties of Halloysite.

Purpose of the Study:

• To investigate the gamma ray shielding properties of natural and modified Halloysite nanotubes.
• To simulate the mass attenuation coefficient (μm) for Halloysite composites across a wide energy range.
• To calculate other key shielding parameters like Half-Value Layer (HVL) and Mean Free Path (MFP).

Main Methods:

• Utilized MCNP 5 code for simulating the mass attenuation coefficient of Halloysite samples.
• Validated simulation results by comparing them with calculations from the XCOM database.
• Employed simulated μm to compute additional shielding parameters (HVL, MFP, Zeff, Neff).

Main Results:

• MCNP simulation results for mass attenuation coefficient closely matched XCOM database calculations.
• Comprehensive shielding parameters were determined for Halloysite composites.
• The study provides detailed data on gamma ray interactions with Halloysite materials.

Conclusions:

• Halloysite nanotubes exhibit significant potential for gamma ray shielding applications.
• The study validates MCNP 5 as a reliable tool for simulating radiation shielding properties.
• Modified Halloysite nanotubes offer tunable shielding characteristics for various applications.