Shielding considerations for satellite microelectronics

Fan, Wesley C.; Drumm, Clifton Russell; Roeske, S.B.; Scrivner, G.J.

doi:10.1109/23.556868

Cited by 59 publications

(23 citation statements)

References 3 publications

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“…As will be shown in sections 3 and 4, a complete analysis must also include the detector box and many of the satellite structures. Such complete calculations have been performed to quantify spacecraft radiation doses [ Fan et al , 1996] and to evaluate the background of gamma‐ray telescopes [ Dean et al , 2003].…”

Section: Introductionmentioning

confidence: 99%

Bremsstrahlung effects in energetic particle detectors

et al. 2004

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The energetic charged particles of the Earth's magnetosphere are routinely detected by solid‐state satellite instruments. Quantitative data are increasingly required for engineering dose calculations and for space weather science. However, the design of some energetic particle detectors can be severely constrained. Background effects must be accurately modeled in such cases to extract quantitative information. In particular, bremsstrahlung radiation from electrons impacting the detector and the satellite often dominates the background noise. Numerical tools are presented here to calculate total bremsstrahlung effects in energetic electron detectors. The calculations are illustrated for the low‐energy particle detector of current Global Positioning System satellites.

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Section: Introductionmentioning

confidence: 99%

Bremsstrahlung effects in energetic particle detectors

et al. 2004

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“…The superior performance of composite shields has already been identified by previous studies [36,[39][40][41] and can be understood from the perspective of dose enhancement effects taking place at the interface of dissimilar materials [42][43][44]. Most of these studies though approach the problem from another perspective: they either compare the composite shield to aluminum, a commonly used and well-studied material, or they compare different composites materials with one another.…”

Section: Plos Onementioning

confidence: 98%

A biomimetic approach to shielding from ionizing radiation: The case of melanized fungi

Vasileiou

Summerer

2020

PLoS ONE

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Melanized fungi have been shown to thrive in environments with high radionuclide concentrations, which led to the association of the pigment melanin with the protection against ionizing radiation. Several hypotheses regarding the function of melanin have been proposed. Yet, the exact mechanism behind the protective property of melanin is unclear and poorly explored. A better understanding of the mechanisms that are involved in increasing the tolerance of the organisms to ionizing radiation could lead to technology transfer to humanrelated applications. Effective protection from radiation is essential for human space flight in general and human missions beyond Low Earth Orbit specifically. In this paper, we follow a biomimetic approach: we test two of current hypotheses and discuss how they could be applied to radiation shield designs. First we focus on the interaction of melanin with high energy electrons, which has been suspected to reduce the kinetic energy of the electrons through a cascade of collisions, thus providing physical shielding. Second, we investigate if the spatial arrangement of melanin, organized as a thin film or a collection of hollow microspheres, affects its shielding properties. To this end, we measured experimentally and by numerical simulations the attenuation of β-radiation as pass through solutions and suspensions of melanin and contrasted the values to the ones of cellulose, a substance with similar elemental composition. Further, we investigate the spatial arrangement hypothesis using Monte Carlo simulations. In agreement with the simulations, our experiments indicated that melanin does not provide improved shielding in comparison to cellulose from β-radiation. However, our simulations suggest a substantial effect of the spatial arrangement on the shielding performance of melanin, a pathway that could be transferred to the design of composite radiation shields.

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“…polyethylene, epoxy) and high atomic number (e.g. tungsten) [2]. This multi-layer shield provides relatively high energy absorption and reduction of secondary radiation.…”

Section: Radiation Shieldingmentioning

confidence: 99%

Multifunctional and lightweight load-bearing composite structures for satellites

et al. 2018

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Within the framework of the German national project multiSat multifunctional composite structures for satellite applications are developed. The objective is the integration of passive and active functions into the load-bearing spacecraft structure by using suitable materials, components and mechanisms. The passive functions include heat transfer, radiation shielding and protection against space debris impacts, whereas the active functions comprise electric energy and data transfer and vibration reduction. Due to their multi-layer build-up composite materials are suitable for functional integration since each layer can be defined and designed to provide one or more specific functions. The concept of a multifunctional structure allows for the reduction of the overall satellite mass and of installation space required for subsystems. It also opens up new opportunities for highly integrative and standardized production processes and lower total costs and time for manufacturing, qualification and launch. This paper describes the development and design of a concept for a multifunctional sandwich panel and the results of the analyses, numerical simulations and experiments conducted at coupon level.

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Shielding considerations for satellite microelectronics

Cited by 59 publications

References 3 publications

Bremsstrahlung effects in energetic particle detectors

Bremsstrahlung effects in energetic particle detectors

A biomimetic approach to shielding from ionizing radiation: The case of melanized fungi

Multifunctional and lightweight load-bearing composite structures for satellites

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