Optimization of shielding to reduce cosmic radiation damage to packaged semiconductors during air transport using Monte Carlo simulation

Lee, Ju Hyuk; Kim, Hyun Nam; Jeong, Heon Yong; Cho, Sung Oh

doi:10.1016/j.net.2020.01.016

Cited by 10 publications

(2 citation statements)

References 16 publications

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“…Semiconductor-based components in harsh environments, such as infrared sensors in space, accumulate electrically active defects due to radiation damage [8][9][10][11][12][13][14]. Such defects act as recombination and charge compensation centers and thereby affect minority carrier lifetime and free carrier concentration, which degrade circuit functionality.…”

Section: Introductionmentioning

confidence: 99%

The Sliding-Aperture Transform and Its Applicability to Deep-Level Transient Spectroscopy

et al. 2022

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A mathematical method is presented for the extraction of defect parameters from the multiexponential decays generated during deep-level transient spectroscopy experiments. Such transient phenomenon results from the ionization of charge trapped in defects located in the depletion width of a semiconductor diode. From digitized transients acquired at fixed temperatures, this method produces a rate–domain spectral signature associated with all defects in the semiconductor. For signal-to-noise ratio of 1000, defect levels with carrier emission rates differing by as little as 1.5 times may be distinguished.

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Section: Introductionmentioning

confidence: 99%

The Sliding-Aperture Transform and Its Applicability to Deep-Level Transient Spectroscopy

et al. 2022

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“…Aviation shielding can be divided into internal and external shielding. However, personal protective equipment or tools have not been developed thus far (Lee et al, 2020). For personal defense against radiation, personnel in medical institutions typically use an apron with a minimum lead equivalent of 0.25 mm Pb (Adlienė et al, 2020).…”

mentioning

confidence: 99%

Functional lightweight protective clothing shielding design for constant radiation shielding of flight attendants and Monte Carlo simulation verification

Kim,

Youn

2023

Front. Mater.

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The use of easily accessible shielding suits for personal defense by flight attendants to reduce occupational cosmic radiation exposure is attracting increasing attention. However, to ensure activity in a limited area, the flexibility of the thin film must be considered. Although several process technologies to reduce the thickness of the shielding fabric are available, nanofiber production through electrospinning is the most effective, and it is attracting attention owing to its excellent reproducibility of the shielding performance. Therefore, in this study, a general sheet and a nanofiber shielding sheet were manufactured, and their shielding performance was compared. In addition, the shielding effect of the nanofiber shielding sheet was verified under aircraft conditions via Monte Carlo simulation. The shielding performance for neutrons and gamma rays, which are the most common sources of cosmic radiation, was 17.5% and 15.2%, respectively, with the Ba-133 and Cs-137 sources in the 0.3 mm shielding fabric. The absorbed dose change with the 5 mm shielding fabric was 7 μGy/d for neutrons and 4.3 μGy/d for protons. The shielding fabric developed in this study is expected to have an active shielding effect when used as personal protective equipment (clothing) by aircrew.

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Important parameters derived from Monte Carlo (MC) and Molecular Dynamics (MD) simulations

Singh¹,

Beg²,

Dewangan³

et al. 2023

Computational Modelling and Simulations for Designing of Corrosion Inhibitors

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Optimization of shielding to reduce cosmic radiation damage to packaged semiconductors during air transport using Monte Carlo simulation

Cited by 10 publications

References 16 publications

The Sliding-Aperture Transform and Its Applicability to Deep-Level Transient Spectroscopy

The Sliding-Aperture Transform and Its Applicability to Deep-Level Transient Spectroscopy

Functional lightweight protective clothing shielding design for constant radiation shielding of flight attendants and Monte Carlo simulation verification

Important parameters derived from Monte Carlo (MC) and Molecular Dynamics (MD) simulations

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