Lunar Near Surface Plasma Environment from Chandrayaan-2 Lander Platform:RAMBHA-LP payload

Manju, G.; Pant, Tarun Kumar; Sreelatha, P.; Nalluveettil, Santhosh J.; Kumar, P. Pradeep; Upadhyay, Nirbhay K.; Hossain, Md. Mosarraf; Naik, Neha; Yadav, Vipin K.; John, Rosmy; Sajeev, R.; Ramalingam, Jothi; George, P. V.; Nandi, Amarnath; Mridula, N.; Rana, Aswathy R. P. Janmejay Jaiswal; Srivastava, Snehil; Thampi, Smitha V.

doi:10.18520/cs/v118/i3/383-391

Cited by 7 publications

(2 citation statements)

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“…The plasma (solar wind) electron density decreases by 20%-30% near the surface within type A and B sheaths. These predictions could be validated through the LP (i.e., RAMBHA payload) measurements on board Ch3 (Manju et al 2020).…”

Section: Resultsmentioning

confidence: 99%

Plasma Sheath around Chandrayaan-3 Landing Site: A Case Study

Sana,

Mishra

2023

Planet. Sci. J.

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India’s lander-rover mission Chandrayaan-3 is scheduled to be launched in mid-2023. We have simulated a realistic scenario and investigated the electric potential development over the Chandrayaan-3 landing site under the influence of observed solar ultraviolet/extreme-ultraviolet radiation and real plasma parameters measured by THEMIS as a case study. The electric potential structures have been derived by solving Poisson’s equation, which is coupled with latitude-dependent fermionic photoelectrons, non-Maxwellian plasma electrons, and cold ions. A dynamic variation of the potential structure around the sunlit landing site has been observed through the analysis. This study predicts a photoelectron density range from 10 to 40 cm−3 and mean energy range from 2.6 to 3 eV near the surface of the Chandrayaan-3 landing site, which may be tested by the in situ measurement.

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Section: Resultsmentioning

confidence: 99%

Plasma Sheath around Chandrayaan-3 Landing Site: A Case Study

Sana,

Mishra

2023

Planet. Sci. J.

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“…The interaction of sheathaccelerated, unidirectional positive ions determines the anisotropic etching on silicon substrates [2]. The charging of satellites in zero-gravity conditions [7], plasma thrusters [8,9], surface creation of negative ions in neutral beam sources [10], plasma diagnostics [11][12][13][14][15], plasma confinement [16], and dust particle interaction [17,18] are other examples where sheath physics finds relevance. As a result, a number of theoretical [19][20][21][22][23][24][25][26][27][28] and experimental investigations [29][30][31][32][33] have been carried out to understand the nature of the sheath regions that are typically formed in low-temperature laboratory plasmas.…”

Section: Introductionmentioning

confidence: 99%

Determining sheath edge electric field around cylindrical pins of a DC-biased hairpin resonator probe

Singh,

Pandey,

Dahiya

et al. 2024

Plasma Sources Sci. Technol.

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The sheath-edge electric field (E_s) is an important parameter to patch the quasi-neutral pre-sheath and non-neutral sheath regions. The choice of E_s significantly influences the theoretically estimated values of the sheath width, potential, and ion density distribution inside the sheath, as determined by the Poisson equation. The precise nature of E_s has been a persistent subject of investigation, giving rise to the question of whether it should be zero or possess a finite value, as proposed by various authors. In this study, we determine the values of E_s by solving Poisson's equation as a boundary-value problem, utilizing experimentally determined values of sheath radius from a DC-biased hairpin probe. The obtained values of E_s are found to be finite and closely align with the analytical expressions presented by K-U Riemann [J. Phys. D: Appl. Phys. 24 493 (1991)] and Igor D. Kaganovich [Phys. Plasmas 9, 4788 (2002)]. Additionally, the impact of electron-penetrating sheaths and interacting sheaths on the applicability of the hairpin probe in low-pressure plasmas is briefly discussed.

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Chandrayaan-2 Mission

Chauhan

Chauhan²

2023

Encyclopedia of Lunar Science

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Lunar Near Surface Plasma Environment from Chandrayaan-2 Lander Platform:RAMBHA-LP payload

Cited by 7 publications

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Plasma Sheath around Chandrayaan-3 Landing Site: A Case Study

Plasma Sheath around Chandrayaan-3 Landing Site: A Case Study

Determining sheath edge electric field around cylindrical pins of a DC-biased hairpin resonator probe

Chandrayaan-2 Mission

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