Mapping lunar surface chemistry: New prospects with the Chandrayaan-2 Large Area Soft X-ray Spectrometer (CLASS)

Narendranath, S.; Athiray, P. S.; Sreekumar, P.; Radhakrishna, V.; Tyagi, Anurag; Kellett, B. J.; team, the CLASS

doi:10.1016/j.asr.2013.04.008

Cited by 7 publications

(2 citation statements)

References 23 publications

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“…Together with mineralogical data this would provide a comprehensive picture of lunar surface chemistry. The instrument is designed, developed and provided by ISAC, Bangalore (Narendranath et al, 2014).…”

Section: Chandrayaan-2mentioning

confidence: 99%

Chandrayaan-2: India’s Second Lunar Exploration Mission

Kosambe

2019

Journal of Aircraft and Spacecraft Technology

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The Moon has always been the center of attention for mankind, more than any other heavenly body in the night sky. With the early history of the solar system etched on it, the Moon challenges mankind from time immemorial to discover its secrets and admire its marvels. Understanding the Moon will provide us a pathway to unravel the early evolution of the solar system and that of planet Earth. Almost twelve years after its first lunar exploration mission, India bounced back towards Moon with Chandrayaan-2. India's most advanced engineering marvel Chandrayaan-2 is on a mission unlike any before. Leveraging nearly a decade of scientific research and engineering development, India's second lunar expedition will shed light on a completely unexplored region of the Moon, its South Polar Region. The indigenously built Chandrayaan-2 consists of an orbiter, a lander (Vikram) along with a rover (Pragyan). With the payload of completely home-grown technologies, it will help us to gain a better understanding of the origin and evolution of the Moon by conducting detailed topographical studies, comprehensive mineralogical analysis and a host of other experiments. The Chandrayaan-2 is India's first robotic exploration mission to attempt a soft landing on the South Polar Region of the Moon. With the success of this mission, India became the fifth country ever to attempt a soft landing on the lunar surface. This paper provides an insight into the Chandrayaan-2 Mission. Additionally, an overview of the mission profile, challenges involved, launch vehicle architecture, spacecraft configuration and scientific payloads are also presented.

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Section: Chandrayaan-2mentioning

confidence: 99%

Chandrayaan-2: India’s Second Lunar Exploration Mission

Kosambe

2019

Journal of Aircraft and Spacecraft Technology

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“…Moreover, it has a better performance than CCD54 with respect to radiation hardness [11,12]. Chandrayaan-2 [13] had also adopted this kind of detector. The observable energy range of CCD236 is 0.7-13 keV, the energy resolution that can be achieved is 140 eV @ 5.9 keV @ -70 • C, sensitive area is 4.2 cm 2 and the readout period is 1 ms [5][6][7]14].…”

Section: Introductionmentioning

confidence: 99%

Calibration of the energy response matrix for X-ray detector CCD236

Zhu

et al. 2021

J. Inst.

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CCD236 is a new generation swept charge device (SCD) developed by e2v. It is designed for the Low Energy Telescope (LE) onboard the Hard X-ray Modulation Telescope (HXMT). The spectrum of the detector is a convolution result of the incident spectrum and the energy response of the detector. One can obtain accurate quantities of incident spectrum by fitting the model spectrum with the energy response. According to the two-dimensional interpolation method, an energy response matrix of CCD236 is generated using the calibration data obtained by the low X-ray calibration facility located at Institute of High Energy Physics. The accuracy of interpolation is better than 0.2 eV, and the full width at half maximum (FWHM) variation trend with energy of the RSP agrees well with that of the calibration data. After that, a double-gaussian model of Fe-55 source was convoluted with the energy response matrix. The result shows that the fitting residual is controlled within 3σ after considering a systematic error of 0.1%. The deviation of full-energy peak is less than 10 eV. The RSP can well characterize the response of CCD236 detector in the observable energy region.

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