Medium energy charged particle detector with a deflecting electrostatic field for measurement of suprathermal electrons, protons, and neutrals aboard next-generation small satellite-1

Seo, Hoonkyu; Shin, Yong‐Cheol; Woo, J.; Seol, W. H.; Lee, Chaean; Lee, Chanhaeng; Lee, Hyunsang; Seon, Jongho; Sohn, Jin-Hun; Kang, Min; Ryu, Kwang‐Sun; Shin, Goo-Hwan; Chae, Jang-Soo; Tindall, C.; Larson, D. E.; Sample, J. G.

doi:10.1016/j.asr.2021.04.031

Cited by 6 publications

(3 citation statements)

References 46 publications

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“…The main payload is the Near-infrared Imaging Spectrometer for Star formation history (NISS), which takes images of the universe in the near-infrared spectral range (Jeong et al, 2014). The secondary payload, the Instrument for the Study of Space Storms (ISSS), provides information on highenergy particles (Seo et al, 2015(Seo et al, , 2021Sohn et al, 2018) and parameters of background cold ionospheric plasma (Lee et al, 2018). The ISSS data are supplemented by a navigation-grade Flux-Gate Magnetometer (FGM), which can continuously measure magnetic field vectors (Song et al, 2021).…”

Section: Accepted Articlementioning

confidence: 99%

“…This artefact might have been suppressed if the MEPD had an additional Silicon detector on the rear side, which can signal whether an electron has penetrated the front detector or not. Unfortunately, the MEPD only has a front Silicon detector with a thickness of ~315 μm, whose energy limit for full electron stop is about 225 keV (Seo et al, 2021). This inherent limitation might have created the slightly non-monotonic energy spectrum in Figure 6d.…”

Section: Accepted Articlementioning

confidence: 99%

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Multi‐Year Statistics of LEO Energetic Electrons as Observed by the Korean NextSat‐1

et al. 2021

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Monitoring the Earth's radiation belt by Low-Earth-Orbit (LEO) satellites has a long history and complemented observations near the high-altitude equatorial plane. However, most of the previous LEO missions suffered from limitations in energy resolution, energy range, L-shell coverage, or the mission lifetime, which leave room for further improvement in this topic. Here we present multi-year (January 2019~February 2021) observations of energetic (0.03 MeV~1.8 MeV) electrons by the Korean NextSat-1 (altitude~575 km) with high energy resolution (0.006-0.4 MeV) and seamless L-shell coverage. For <80 keV electrons, the slot-region outer edge moves inward with increasing geomagnetic activity, which agrees with previous Van Allen Probes reports. The behavior is more conspicuous for lower-energy electrons. Latitudinal profiles of outer-belt electron flux are smoother equatorward of the geosynchronous footprint latitudes (|MLAT|~66 o ) than poleward. The NextSat-1 electron flux is positively correlated to geosynchronous observations, with the coefficient generally higher for higher electron energies. Also, both the geosynchronous and NextSat-1 data exhibit similar spectral indices close to -3 in the log-log space. All these results complement and expand previous knowledge on energetic electrons. The main findings are discussed in the context of existing literature.

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Section: Accepted Articlementioning

confidence: 99%

Section: Accepted Articlementioning

confidence: 99%

Multi‐Year Statistics of LEO Energetic Electrons as Observed by the Korean NextSat‐1

et al. 2021

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“…The typical EM waves will partially reflect, refract and diffract with the respect to the medium at the interface [19][20][21][22][23][24][25][26]. The charged particles have been measured and studied using infrared spectroscopy and deflection of electrostatic field [27][28][29]. The scattering of EM waves from the neutral and charged water droplets has been studied in the range from millimetre wave to microwave.…”

Section: Introductionmentioning

confidence: 99%

Remote surface charge detection device for water with excess charge

Hemalatha

Bingi²

2023

Eng. Res. Express

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A non-destructive surface charge detection is crucial for charged water research and exploitation of charged water in different applications. The widely used existing methods such as Kelvin force spectroscopy, Mass spectroscopy, impedance spectroscopy, Electrophoretic light scattering etc which are costly and not portable. This work presents the design and development of a compact, portable, low cost and incoherent IR based in the non-destructive modality. It is based on the Thomson scattering of electromagnetic wave on charged ions. Here, an IR photosensor is deployed to detect the change in the IR beam scattering from the charged surface. A distinct signature in reflected IR radiation from the charged water is recorded using the proposed setup. The different types of charged water are produced from the electrohydrodynamic bridge with relatively high H+ and OH- ions. The detection and discrimination of neutral, positive and negatively charged water are demonstrated by the device successfully.

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Low-latitude plasma blobs above Africa: Exploiting GOLD and multi-satellite in situ measurements

Park

Min

Eastes

et al. 2023

Advances in Space Research

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Medium energy charged particle detector with a deflecting electrostatic field for measurement of suprathermal electrons, protons, and neutrals aboard next-generation small satellite-1

Cited by 6 publications

References 46 publications

Multi‐Year Statistics of LEO Energetic Electrons as Observed by the Korean NextSat‐1

Multi‐Year Statistics of LEO Energetic Electrons as Observed by the Korean NextSat‐1

Remote surface charge detection device for water with excess charge

Low-latitude plasma blobs above Africa: Exploiting GOLD and multi-satellite in situ measurements

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