Generation of simultaneous H+ and He+ band EMIC waves in the nightside radiation belt

Guan, Chunyi; Shang, Xiongjun; Xie, Yijin; Yang, Chang; Zhang, Sai; Si, Lina; Xiao, Fuliang

doi:10.1007/s11431-019-1545-6

Cited by 19 publications

(15 citation statements)

References 47 publications

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“…The peaks at 1242–1254 cm −1 represent the ν(Ph‐OH) mode, which is susceptible to the protonation of carboxylic group. The peak positions and attributions of the vibrational modes discussed above are similar to previous reports ,…”

Section: Resultssupporting

confidence: 89%

“…The infrared spectra of 20 mmol L −1 salicylate aqueous solution at different pH are displayed in Figure . Salicylate has two pK values: pK 1 =2.8 and pK 2 =13.4, respectively, and one‐protonated HSal − species would form a stable structure of a six‐member ring through hydrogen bonding, leading to a very high pK 2 . The solution containing singly Sal 2− or H 2 Sal is hard to obtain in our infrared experiments, because the ATR accessory would be easily corroded in strong acidic/basic solution.…”

Section: Resultsmentioning

confidence: 95%

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Exploring Uranyl/Salicylate/Hematite Binary and Ternary Complexes by Attenuated‐Total‐Reflection Infrared Spectroscopy

Ren

Zhong

et al. 2018

ChemistrySelect

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Attenuated‐total‐reflection infrared technique was utilized to investigate the binding mechanisms in uranyl/salicylate/hematite binary and ternary systems at the molecular scale. Uranyl has been found to adsorb onto hematite surfaces in an outer‐sphere mode, similar to uranyl/maghemite system, whereas the desorption process is much longer than the latter which is probably due to different surface structures of the two minerals. Salicylate, as a good analogue of humic acid and other ortho‐hydroxo aromatic acids, binds with the surface mainly through complexation of the carboxylic group with the surface. In the cosorption system of uranyl/salicylate, at a sub‐micromolar concentration onto hematite, only weak interactions are deduced from the shifts of salicylate characteristic peaks. The increasing amount of salicylate have significant influences upon uranyl species and would release uranyl from the surface. The ternary complexes were found for both systems, and the possible structures were predicted through DFT calculations. The results of the present study could provide some information on the organic ligand influences on the uranyl sorption process, especially for the ortho‐hydroxo acromatic acids, such as humic acid.

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Section: Resultssupporting

confidence: 89%

Section: Resultsmentioning

confidence: 95%

Exploring Uranyl/Salicylate/Hematite Binary and Ternary Complexes by Attenuated‐Total‐Reflection Infrared Spectroscopy

Ren

Zhong

et al. 2018

ChemistrySelect

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“…, the dispersion matrix D can be expressed to the first order as (Guan et al, 2020;Kennel, 1966;Lunjin et al, 2010) SHANG ET AL.…”

Section: Analysis and Discussionmentioning

confidence: 99%

ULF‐Modulation of Whistler‐Mode Waves in the Inner Magnetosphere During Solar Wind Compression

et al. 2021

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The solar wind plays important roles in terrestrial magnetosphere dynamics, including the particle population and plasma wave generation. Here, we report an interesting event that ultralow frequency (ULF) waves are enhanced right after solar wind compression and the compressional mode ULF wave subsequently modulates both the intensity and energy flux direction of whistler‐mode waves. Quasi‐periodic whistler‐mode wave packets are observed around L = 5.6 at noon sector by Van Allen Probes. Growth rate calculation demonstrates that the compressional mode ULF wave can modulate the whistler‐mode wave intensity by modulating the energetic electron anisotropy. Moreover, the direction of wave energy flux is observed to alternate between northward and southward at equator, which is probably because the intense ULF waves periodically alter the relative direction of the wave source region with respect to the spacecraft. The current results provide a chain of observational evidences to illustrate how the generation and propagation of whistler‐mode waves in the inner magnetosphere are affected by ULF waves during the solar wind dynamic pressure enhancement.

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“…There are also some observations of EMIC waves in the nightside inner magnetosphere (Blum et al., 2020; Cho et al., 2017; Guan et al., 2020; Lessard et al., 2019; Li et al., 2016; Saikin et al., 2015). Some observations of EMIC waves are associated with injected energetic ions.…”

Section: Introductionmentioning

confidence: 99%

EMIC Waves Observed Throughout the Inner Magnetosphere Driven by Abrupt Enhancement of the Solar Wind Pressure

Xue

Yuan

et al. 2022

Geophysical Research Letters

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Generation of simultaneous H+ and He+ band EMIC waves in the nightside radiation belt

Cited by 19 publications

References 47 publications

Exploring Uranyl/Salicylate/Hematite Binary and Ternary Complexes by Attenuated‐Total‐Reflection Infrared Spectroscopy

Exploring Uranyl/Salicylate/Hematite Binary and Ternary Complexes by Attenuated‐Total‐Reflection Infrared Spectroscopy

ULF‐Modulation of Whistler‐Mode Waves in the Inner Magnetosphere During Solar Wind Compression

EMIC Waves Observed Throughout the Inner Magnetosphere Driven by Abrupt Enhancement of the Solar Wind Pressure

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