Space radiation environment prediction for VLSI microelectronics devices onboard a LEO satellite using OMERE-TRAD software

Sajid, Muhammad; Чеченин, Н.Г.; Torres, Frank Sill; Khan, E.U.; Agha, Shahrukh

doi:10.1016/j.asr.2015.04.011

Cited by 18 publications

(5 citation statements)

References 13 publications

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“…But when the inclination increases to 65 • , the particle differential flux will not increase anymore. This is consistent with the results of [42] and [43]. Therefore, a low inclination circular orbit is preferred for CATCH, in order to reduce the damage to the semiconductor detector.…”

Section: In-orbit Radiation Flux Of the Charged Particlessupporting

confidence: 91%

CATCH: chasing all transients constellation hunters space mission

Yin

Tao

et al. 2023

Exp Astron

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In time-domain astronomy, a substantial number of transients will be discovered by multi-wavelength and multi-messenger observatories, posing a great challenge for follow-up capabilities. We have thus proposed an intelligent X-ray constellation, the Chasing All Transients Constellation Hunters (CATCH ) space mission. Consisting of 133 micro-satellites in four types, CATCH will have the capability to perform follow-up observations for a large number of different types of transients simultaneously. Each satellite in the constellation will carry lightweight X-ray optics and use a deployable mast to increase the focal length. The combination of different optics and detector systems enables different types of satellites to have multiform observation capabilities, including timing, spectroscopy, imaging, and polarization. Controlled by the intelligent system, different satellites can cooperate to perform uninterrupted monitoring, all-sky follow-up observations, and scanning observations with a flexible FOV and multi-dimensional observations. Therefore, CATCH will be a powerful mission to study the dynamic universe. Here, we present the current design of the spacecraft, optics, detector system, constellation configuration and observing modes, as well as the development plan.

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Section: In-orbit Radiation Flux Of the Charged Particlessupporting

confidence: 91%

CATCH: chasing all transients constellation hunters space mission

Yin

Tao

et al. 2023

Exp Astron

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“…The energy of protons and electrons was chosen for these experimental studies because the solar wind protons fill the entire solar system and their energy is 1-3 keV. Electrons with tens of keV have the highest fluxes in highly elliptical, geostationary, and other orbits passing through the Earth's radiation belts [12,13]. After each irradiation period, the ρ λ spectra of the irradiated samples were recorded at the irradiation site (in situ).…”

Section: Methodsmentioning

confidence: 99%

Synergistic Effects in a ZnO Powder-Based Coating Sequentially Irradiated with Protons, Electrons, and Solar Spectrum Quanta

et al. 2020

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The authors investigated the changes in diffuse reflectance spectra (ρλ) within 0.32–2.1 μm and integral absorption coefficient (as) of solar irradiation for a zinc oxide powder-based coating. The latter was consequently irradiated with protons (E = 3 keV, F ≤ 1 × 1016 cm−2), solar spectrum quanta (5 eq. of solar irradiation, 1 h), electrons (E = 30 keV, F = 1 × 1016 cm−2), and—repetitively—solar spectrum quanta (5 eq. of solar irradiation, 1 h). Following the irradiation procedure, the decrease in absorption coefficient varied from 0.044 to 0.036 and from 0.062 to 0.04, respectively. Additionally, it was shown that the solar spectrum quanta did not significantly affect the coating pre-irradiated with protons or electrons and did not change the value of induced absorption in the visible region (the latter being caused by the absorption of intrinsic point defects of the zinc oxide crystal lattice). The absorption coefficient degradation decreased under solar spectrum quanta irradiation, which was determined by the decrease in the concentration of free electrons that absorbed in the near-infrared (near-IR) region. ρλ spectra were measured in high vacuum in situ. A post-irradiation transfer of a coating into the atmosphere leads not only to the complete recovery of its reflectance, but also to partial translucence in comparison with the non-irradiated state.

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“…These nuclei come from nearly all of the elements including the actinide group [4]. Radiation energy ranges from keV for trapped electrons in the Van Allen Belts to GeV for galactic cosmic radiation and solar heavy ions [5]. The particles trapped within the Van Allen Belts are protons and electrons.…”

Section: Radiation In Spacementioning

confidence: 99%

Electro-Mechanical Impedance Measurements in an Imitated Low Earth Orbit Radiation Environment

Anderson

Daniel²,

Zagrai

et al. 2016

Volume 9: Mechanics of Solids, Structures and Fluids; NDE, Diagnosis, and Prognosis

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Piezoelectric sensors are used in many structural health monitoring (SHM) methods to interrogate the condition of the structure to which the sensors are affixed or imbedded. Among SHM methods utilizing thin wafer piezoelectric sensors (PWAS), electro-mechanical impedance monitoring is seen as a promising approach to assess structural condition in the vicinity of a sensor. Using the converse and direct piezoelectric effects, this health monitoring method utilizes mechanical actuation and electric voltage to determine the impedance signature of the structure. If there is damage to the structure, there will be a change in the impedance signature. It is important to discern between actual damage and environmental effects on the piezoelectric ceramic sensors and the structure. If structural health monitoring is to be implemented in space structures on orbit, it is imperative to determine the effects of the extreme space environment on piezoelectric sensors and the structures to which they are affixed. The space environment comprises extreme temperatures, vacuum, atomic oxygen, microgravity, micro-meteoroids and debris, and significant amounts of radiation. Radiation in space comes from three sources: solar events, background cosmic radiation, and trapped particles in the Van Allen Belts. Radiation exposure to structures on orbit will vary significantly depending on the duration of the flight and the altitude and inclination of the orbit. In this contribution, the effect of gamma radiation on piezoelectric ceramic sensors and space grade aluminum is investigated for equivalent gamma radiation exposure to 3-months, six-months, and 1-year on Low Earth Orbit (LEO). An experiment was conducted at White Sands Missile Range, Gamma Radiation Facility using Cobalt-60 as the source of radiation. A free PWAS and a PWAS bonded to a small aluminum beam were exposed to increasing levels of gamma radiation. Impedance data were collected for both sensors after each radiation exposure. The total radiation absorbed dose was 200 kRad (Si) by the end of the experiment. The results show that piezoelectric ceramic material is affected by gamma radiation. Over the course of increasing exposure levels to Cobalt-60, the impedance frequency of the free sensor increased with each absorbed dose. The impedance measurements of the sensor bonded to the aluminum beam reflects structural and sensor’s impedance. The data for this sensor show an increase in impedance amplitude with each level of absorbed dose. The mechanism at work in these impedance changes is suggested and future experimental work is identified. A survey of previous results of radiation exposure of piezoelectric ceramic sensors and aluminum alloys is presented and are compared to previous studies.

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Space radiation environment prediction for VLSI microelectronics devices onboard a LEO satellite using OMERE-TRAD software

Cited by 18 publications

References 13 publications

CATCH: chasing all transients constellation hunters space mission

CATCH: chasing all transients constellation hunters space mission

Synergistic Effects in a ZnO Powder-Based Coating Sequentially Irradiated with Protons, Electrons, and Solar Spectrum Quanta

Electro-Mechanical Impedance Measurements in an Imitated Low Earth Orbit Radiation Environment

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