Alpha Particle X-Ray Spectrometer (APXS) on-board Chandrayaan-2 rover

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Alpha Particle X-Ray Spectrometer (APXS) on-board Chandrayaan-2 rover

Shanmugam, M. / Murty, S.V.S. / Acharya, Y.B. / Goyal, S.K. / Patel, Arpit R. / Shah, Bhumi / Hait, A.K. / Patinge, Aditya / Subrahmanyam, D.

Abstract

Abstract Alpha Particle X-ray Spectrometer (APXS) payload configuration for Chandrayaan-2 rover has been completed recently and fabrication of mechanical assembly, PCB layout design and fabrication are in progress. Here we present the design and performance evaluation of various subsystems developed for APXS payload. The low energy threshold of <1keV and the energy resolution of ∼150eV at 5.9keV, for the Silicon Drift Detector (SDD), as measured from the developed APXS electronics is comparable to the standard spectrometers available off-the-shelf. We have also carried out experiments for measuring fluorescent X-ray spectrum from various standard samples from the USGS catalog irradiated by the laboratory X-ray source ²⁴¹Am with 1mCi activity. It is shown that intensities of various characteristic X-ray lines are well correlated with the respective elemental concentrations.

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Document information

Title :

Alpha Particle X-Ray Spectrometer (APXS) on-board Chandrayaan-2 rover

Contributors:

Shanmugam, M. (author) / Murty, S.V.S. (author) / Acharya, Y.B. (author) / Goyal, S.K. (author) / Patel, Arpit R. (author) / Shah, Bhumi (author) / Hait, A.K. (author) / Patinge, Aditya (author) / Subrahmanyam, D. (author)

Published in:

Advances in Space Research ; 54 , 10 ; 1974-1984

Publication date :

2013-01-01

Size :

11 pages

ISSN :

0273-1177

DOI :

https://doi.org/10.1016/j.asr.2013.03.011

Type of media :

Article (Journal)