Utilization of trash for radiation protection during manned space missions

Xu, Feng; Jia, Xin; Lu, Wei; Zhou, Chenglong; Guo, Y.; Fei, Jinxue; Yang, Chen

doi:10.1016/j.actaastro.2017.12.041

Cited by 7 publications

(6 citation statements)

References 9 publications

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“…Refs. [45][46][47] studied the utilisation of trash for radiation protection and [45] suggested that condensed plastic waste be used for the SPE protection in deep space to the extent that it could even replace an initial water-based protection. As for the GCR, lava tubes are safer against the SPE.…”

Section: Spe Gy-equivalent Doses To Bfo On the Moonmentioning

confidence: 99%

Utilisation of Moon Regolith for Radiation Protection and Thermal Insulation in Permanent Lunar Habitats

Akisheva

Gourinat

2021

Applied Sciences

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In the context of a sustainable long-term human presence on the Moon, solutions for habitat radiation and thermal protection with regolith are investigated. Regolith compression is studied to choose the optimal density-thickness combination in terms of radiation shielding and thermal insulation. The applied strategy is to protect the whole habitat from the hazards of galactic cosmic rays and design a dedicated shelter area for protection during solar particle events, which eventually may be a lava tube. Simulations using NASA’s OLTARIS tool show that the effective dose equivalent decreases significantly when a multilayer structure mainly constituted of regolith and other available materials is used instead of pure regolith. The computerised anatomical female model is considered here because future missions will be mixed crews, and, generally, more sex-specific data are required in the field of radiation protection and human spaceflight. This study shows that if reasonably achievable radioprotection conditions are met, mixed crews can stay safely on the lunar surface. Compressed regolith demonstrates a significant efficiency in thermal insulation, requiring little energy management to keep a comfortable temperature inside the habitat. For a more complete picture of the outpost, the radiation protection of lunar rovers and extravehicular mobility units is considered.

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Section: Spe Gy-equivalent Doses To Bfo On the Moonmentioning

confidence: 99%

Utilisation of Moon Regolith for Radiation Protection and Thermal Insulation in Permanent Lunar Habitats

Akisheva

Gourinat

2021

Applied Sciences

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“…Space radiation can damage the structure of materials, degrade their performance, and increase the noise of electronic equipment, as well as threat the health and safety of astronauts. [209][210][211] It can also cause a variety of diseases, such as cancer. [212] Therefore, it is of great significance to develop aviation materials with radiation shielding properties and high mechanical strength.…”

Section: Radiation Protection Materialsmentioning

confidence: 99%

Section: The Applications Of Boron Nitride and Its Derived Nanomaterialsmentioning

confidence: 99%

The Properties and Preparation Methods of Different Boron Nitride Nanostructures and Applications of Related Nanocomposites

Pan

Liu

et al. 2020

The Chemical Record

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Due to special non-metallic polar bond between the III group (with certain metallic properties) element boron (B) and the V group element nitrogen (N), boron nitride (BN) has unique physical and chemical properties such as strong high-temperature resistance, oxidation resistance, heat conduction, electrical insulation and neutron absorption. Its unique lamellar, reticular and tubular morphologies and physicochemical properties make it attractive in the fields of adsorption, catalysis, hydrogen storage, thermal conduction, insulation, dielectric substrate of electronic devices, radiation protection, polymer composites, medicine, etc. Therefore, the synthesis and properties of BN derived materials become the main research hotspots of lowdimensional nanomaterials. This paper reviews the synthetic methods, overall properties, and applications of BN nanostructures and nanocomposites. In addition, challenges and prospect of this kind of materials are discussed.

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“…Currently, two types of radiation shielding techniques are available: passive and active. Active shielding involves using electromagnetic elds to de ect space radiation, offering promising improvements but is still in early research stages (Xu et al 2018). On the other hand, passive shielding relies on su cient material to attenuate radiation effects.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Shielding Efficiency against Galactic Cosmic Radiation: Secondary Neutron Optimization

Dribi,

Ounoughi

2024

Preprint

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GCR (Galactic Cosmic Rays) are highly energetic ionizing radiations originating from sources beyond our solar system. During long-duration missions to outer space such as the Moon or Mars, the health hazards posed by these cosmic rays become a pressing concern for astronauts. Consequently, prioritizing the protection of both the spacecraft and its crew becomes of the highest importance, and the materials most frequently used for shielding are aluminum (Al) and polyethylene (PE). The objective of this study is to simulate the effectiveness of shielding against GCR, particularly focusing on secondary neutrons, using a combination of aluminum and polyethylene materials. Monte Carlo simulation (PHITS code) was used in the simulation. The effectiveness shielding of Al and PE is compared. The flux spectra of secondary emitted from the back of the slab shielding was computed. It shows that secondary neutron is produced mainly by GCR-protons and when multi-layer of PE materials is employed, secondary neutron flux has been reduced (about 10%). This reduction is of paramount significance since neutrons are a crucial component of the radiation emanating from GCR. In summary, the utilization of multi-layer polyethylene materials was demonstrated as an efficient approach to enhance the shielding effectiveness against GCR radiation.

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Utilization of trash for radiation protection during manned space missions

Cited by 7 publications

References 9 publications

Utilisation of Moon Regolith for Radiation Protection and Thermal Insulation in Permanent Lunar Habitats

Utilisation of Moon Regolith for Radiation Protection and Thermal Insulation in Permanent Lunar Habitats

The Properties and Preparation Methods of Different Boron Nitride Nanostructures and Applications of Related Nanocomposites

Enhancing Shielding Efficiency against Galactic Cosmic Radiation: Secondary Neutron Optimization

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