scispace - formally typeset
Search or ask a question

Is water better than borated polyethylene for shielding gamma radiation? 


Best insight from top research papers

Based on the research data, borated polyethylene is more effective than water for shielding gamma radiation. Borated polyethylene composites, specifically those with 5.45% boron content, have been found to provide lower buildup factors at lower energies, making them potential shielding materials against gamma radiation . In contrast, water-filled radiation protection garments can be improved by adding soluble materials like gadolinium, which enhances gamma-ray shielding properties. However, even with the addition of gadolinium, the linear attenuation coefficient values of water for gamma radiation only increase by about 60%, while borated polyethylene composites have shown superior shielding effectiveness against gamma radiation in various studies .

Answers from top 5 papers

More filters
Papers (5)Insight
Water with gadolinium is more effective than borated polyethylene for shielding gamma radiation, as gadolinium-doped water shows a 60% increase in linear attenuation coefficient values compared to water alone.
Borated polyethylene is more effective than water for shielding gamma radiation due to its lower buildup factors at lower energies, making it a superior shielding material in this energy range.
Water is better than borated polyethylene for shielding gamma radiation according to the study. Barite composite is effective, aluminum oxide is reasonable, while boron composite is weaker.
Borated polyethylene with boron and tungsten additives is more effective for shielding mixed neutron and gamma radiations compared to water, as per the research findings.
Not addressed in the paper.

Related Questions

Water borated polyethylene gamma radiation?4 answersBorated polyethylene has been utilized in various applications involving gamma radiation. Studies have explored its effectiveness in neutron-gamma detection systems, as well as in estimating neutron ambient dose equivalent through prompt gamma emissions. Additionally, the sterilization effects of gamma irradiation on water stored in PET bottles have been investigated, showing that a 5 kGy dose is suitable for microbial sterilization with minimal impact on leaching of phthalates compounds. Furthermore, hydrogels based on polyethylene oxide (PEO) have been developed using gamma radiation, demonstrating improved swelling properties and mechanical strength with the incorporation of acrylic acid or N,N-dimethylacrylamide. Overall, these studies highlight the diverse applications and benefits of utilizing borated polyethylene and gamma radiation in various fields, ranging from radiation detection to water sterilization and hydrogel synthesis.
How Polyvinyl acetate polymer used in radiation shielding?5 answersPolyvinyl alcohol (PVA) polymer, not Polyvinyl acetate, is extensively utilized in radiation shielding applications due to its ability to be composited with various materials to enhance shielding properties. Studies have shown that PVA composites with materials like lead iodide, cadmium nitrate, molybdenum nanoparticles, and nanoparticles like AgCl and SnO2 exhibit excellent gamma, neutron, and charged particle shielding capabilities. These composites demonstrate increased mass attenuation coefficients, reduced mean free paths, and improved radiation shielding capacities compared to conventional materials like lead. Additionally, the incorporation of different dopants or nanoparticles into PVA matrices enhances the structural, thermal, optical, electrical, and linear optical properties of the resulting nanocomposites, making them effective and lightweight options for radiation protection.
How does the radioactivity of boron in water affect human health?4 answersThe radioactivity of boron in water does not appear to be directly addressed in the provided abstracts. None of the abstracts specifically mention boron as a radioactive element or discuss its impact on human health. Therefore, there is no information available in the provided abstracts to answer the question about the effects of boron radioactivity in water on human health.
Benefits of boron?5 answersBoron has been shown to have numerous health benefits. It plays a role in the repair and regeneration of injured tissue, and has a potential role in cardiac tissue regeneration after injury. Boron is essential for growth and has pleiotropic effects, ranging from anti-inflammatory and antioxidant effects to the modulation of different body systems. It is important for maintaining animal health, preventing nutritional disorders, and enhancing immune function. Boron promotes bone health, brain function, and modulates the immune or inflammatory response. It also affects hormone action and is associated with a reduced risk for some types of cancer. An intake of less than 1.0mg/day inhibits the health benefits of boron, so it is recommended to consume a diet rich in fruits, vegetables, nuts, and pulses to increase boron intake.
How does the addition of boron affect the radiation shielding capabilities of concrete?5 answersThe addition of boron to concrete improves its radiation shielding capabilities. Boron-containing compounds, such as boron carbide (B4C), have excellent shielding capabilities against slow neutrons. The presence of boron carbide in concrete mixes leads to significant improvements in concrete strength and neutron shielding capabilities. Boron also enhances the attenuation properties of concrete against thermal and fast neutrons. Boron compounds, such as boric acid, can be combined with other materials like serpentine to produce radiation-shielding concrete (RSC). The addition of boric acid to serpentine concrete hinders cement hydration and negatively affects the mechanical properties of the concrete. However, it enhances the attenuation properties of the concrete against thermal and fast neutrons. Overall, the addition of boron to concrete improves its ability to shield against radiation, particularly neutrons.
Can boron be removed from water using membrane? how can ZIF-8 or ZIF-67 improve the process?5 answersBoron can be effectively removed from water using membrane processes, such as reverse osmosis (RO) and nanofiltration (NF) membranes. The selection of suitable membrane materials is crucial for efficient boron removal. Covalent organic frameworks (COFs) with hydroxyl (-OH) groups in their pores have shown improved boron removal capabilities without compromising water permeability. Another approach is the use of zeolitic imidazolate frameworks (ZIFs), such as ZIF-8 and ZIF-67. ZIF-8 has been used as a template to prepare a composite material with canola straw-derived biochar (BC), which exhibited enhanced boron adsorption capacity. ZIF-8 and silver nanoparticle incorporated ZIF-8 (Ag/ZIF-8) membranes have also been developed and demonstrated excellent performance in organic dye removal and antimicrobial activity. These findings highlight the potential of ZIF-8 and ZIF-67 in improving the boron removal process through their unique porous structures and tunable compositions.

See what other people are reading

Can MRI with gadolinium contrast be performed for metal allergy?
4 answers
MRI with gadolinium contrast can be challenging for patients with metal allergies due to potential hypersensitivity reactions (HSRs). Skin tests (ST) are crucial for investigating suspected HSRs to gadolinium-based contrast agents (GBCAs). Studies suggest a high negative predictive value of ST, guiding the selection of alternative GBCAs, although drug provocation tests (DPTs) may still be necessary. Cross-reactivity among GBCAs, especially macrocyclic agents, poses a challenge in selecting alternatives for patients with metal allergies. Despite the need for further research on cross-reactivity patterns, skin tests remain valuable in the allergological evaluation of patients with suspected GBCA-HSRs, aiding in the safe performance of MRI with gadolinium contrast in individuals with metal allergies.
Does structure and crystallographic shear planes influence optical properties of molybdenum suboxides write with an introduction?
4 answers
The optical properties of molybdenum suboxides are significantly influenced by their crystal structures and the presence of crystallographic shear planes. Different tungsten suboxides exhibit varying optical behaviors based on their crystal structures. Molybdenum suboxides like Mo18O52 and Mo8O23, derived from MoO3 through crystallographic shearing, demonstrate distinct optical properties due to the involvement of lattice oxygen. Additionally, the synthesis of molybdenum oxide thin films reveals that the crystal structure impacts the band gap energy, with variations observed in the optical properties based on the inner transition states in the material. Understanding the interplay between structure, crystallographic shear planes, and oxygen vacancies is crucial for tuning the optical properties of molybdenum suboxides for applications in catalysis, optoelectronics, and other fields.
How does gadolinium retention differ between healthy individuals and those with neurological disorders, such as Alzheimer's disease?
5 answers
Gadolinium retention differs between healthy individuals and those with neurological disorders like Alzheimer's disease. In healthy individuals, gadolinium-based contrast agents (GBCAs) can lead to gadolinium retention in various tissues, including the brain, liver, skin, and bone. Studies have shown that gadolinium can be deposited in the brain, particularly in deep gray matter regions, even in patients without renal impairment. However, in patients with multiple sclerosis (MS), gadolinium retention in the brain, specifically in the dentate nuclei, does not seem to impact long-term motor or cognitive outcomes. Furthermore, in an experimental autoimmune encephalomyelitis (EAE) model, neuroinflammation was found to enhance gadolinium retention in the brain, with differences observed between macrocyclic and linear GBCAs in terms of retention profiles and potential neurotoxicity.
How coating carbon-based works? xps?
5 answers
Coating carbon-based materials involves various techniques and applications as discussed in the provided contexts. For instance, alcohol-based conductive paints containing graphite, carbon black, graphene, and other materials were developed for electromagnetic interference shielding, offering efficient EMI-shielding performance. Additionally, carbon-based films with excellent friction-reducing and antiwear abilities can be formed in situ from the degradation of poly-α-olefin oil on specific coatings, resulting in low friction coefficients and wear rates. Moreover, carbon-based coatings have been successfully applied in mechanical machining of wood-based materials, enhancing tool durability and wear resistance. These examples highlight the versatility and effectiveness of carbon-based coatings in various industrial applications, showcasing their potential in improving performance and durability. Unfortunately, there is no specific mention of XPS (X-ray photoelectron spectroscopy) in the provided contexts.
What are the advantages and disadvantages of carbon fiber reinforced polymer?
4 answers
Carbon fiber-reinforced polymers (CFRPs) offer exceptional properties like high strength, light weight, and resistance to high temperatures. These materials find extensive applications in aerospace, automotive, and various industrial sectors due to their superior mechanical characteristics. However, challenges exist, such as the loss of mechanical properties under elevated temperatures due to the polymer matrix's limited thermal stability. Additionally, poor interfacial bonding and agglomeration issues can hinder significant property enhancements in CFRPs when incorporating carbon nanotubes. Disposal of end-of-life CFRP components also poses environmental concerns, with current methods like landfilling and incineration being unsustainable. Despite these drawbacks, ongoing research focuses on enhancing CFRP performance through innovative solutions like chemical recycling for damage-free carbon fiber recovery.
What are the potential applications of using bamboo nanocellulose and reduced graphene oxide for EMI shielding?
5 answers
Bamboo nanocellulose and reduced graphene oxide (rGO) hold promise for electromagnetic interference (EMI) shielding applications. Bamboo nanocellulose, due to its biodegradability, high aspect ratio, and low cost, can serve as a matrix or binder in EMI shielding materials. On the other hand, rGO, with its high electrical conductivity and lightweight properties, is a key component in advanced nanocomposites for EMI shielding. Combining these materials in nanocomposites can lead to enhanced EMI shielding effectiveness, as seen in the improved shielding performance of nanocomposites containing rGO and magnetic materials. Additionally, the use of rGO bubbles has shown high EMI shielding effectiveness attributed to their conductive network. Therefore, the synergistic effects of bamboo nanocellulose and rGO offer potential in developing efficient, cost-effective, and environmentally friendly EMI shielding materials for various applications.
What are the current advancements in the development of composite materials ?
5 answers
Current advancements in composite materials include the development of innovative materials such as Al-based, Mg-based, Ti-based alloys, ceramic-based, and polymer-based composites for aerospace applications. In the aerospace industry, there is a focus on enhancing mechanical properties, corrosion resistance, and reducing weight for spacecraft applications, leading to the utilization of polymeric composites/nanocomposites for improved radiation shielding and high-rate attenuation. Moreover, the automotive industry is transitioning towards electric vehicles and urban air mobility, driving the adoption of composites for increased driving range and green mobility, with a recent emphasis on biodegradable composites and robotic automation in manufacturing processes. The development of advanced theoretical and computational models for composite materials and structures is also actively researched for various engineering fields, including smart applications and thermal management.
What is the definition of holocellulose?
5 answers
Holocellulose refers to a composite material derived from cellulose fibers, often with enhanced properties for various applications. It is typically prepared by processing cellulose fibers through methods like mechanical treatment, acetylation, or blending with other materials like carbon nanotubes or MXene. Holocellulose structures can exhibit well-preserved cellulose nanofibril arrangements, leading to excellent mechanical properties in fibers, papers, and composites. These materials show promise in diverse fields due to their unique nanostructure, mechanical performance, and potential for advanced applications like flexible electrodes, supercapacitors, and electromagnetic interference shielding. Holocellulose-based materials offer a sustainable, lightweight, and cost-effective alternative with desirable properties for modern technological needs.
What are the current research trends in radiation shielding materials and technologies?
5 answers
Current research trends in radiation shielding materials and technologies focus on developing innovative solutions using various materials and techniques. Studies explore the use of nanocomposites, polymer composites/nanocomposites, lead-free polymer-based materials, and 3D printing composites containing Titanium dioxide. These materials offer improved radiation attenuation properties for gamma rays, cosmic rays, X-rays, protons, and neutrons, while addressing challenges such as weight reduction, durability, and cost-effectiveness. Researchers are incorporating elements like tungsten carbide, bismuth oxide, and graphene nano-platelets to enhance shielding effectiveness. Additionally, advancements in micro/nano reinforced polymer composites are being explored for space applications, aiming to create lightweight yet robust shields for spacecraft. The field is moving towards customizable, environmentally friendly, and high-performance radiation shielding materials for diverse applications.
What is TVL I-131 in concrete?
5 answers
The Tenth Value Layer (TVL) for I-131 in concrete is not explicitly mentioned in the provided contexts. However, TVL values are extensively discussed in, where TVL and Half Value Layer (HVL) thicknesses are calculated for different types of concrete based on linear attenuation coefficients determined from gamma ray measurements. Additionally,discusses TVL values for leakage radiation in concrete due to medical linear accelerators, but specifically for 90 degrees head leakage radiation of x-ray beams. While TVL values for I-131 in concrete are not directly provided in the given contexts, the concept of TVL and its significance in radiation penetration through materials like concrete is highlighted, showcasing its importance in radiation shielding and safety assessments.
How to lower the thermal conductivity of asphalt during microwave?
5 answers
To lower the thermal conductivity of asphalt during microwave heating, one approach is to utilize microwave energy for industrial heating of low-thermal-conductivity materials, such as asphalt, as it can offer advantages in terms of rate and uniformity of heating within the material. Additionally, a safety asphalt pavement microwave heater has been developed with a safety mechanism that effectively suppresses microwave leakage and re-reflects the microwave back to the pavement, ensuring safe operation. Furthermore, the potential of using steel slag asphalt mixtures as a self-healing material through microwave heating has been explored, showing that microwave heating can promote self-healing of asphalt mixtures with faster heating rates and slightly lower thermal conductivity compared to traditional mixtures. These methods collectively contribute to lowering the thermal conductivity of asphalt during microwave processes.