Hard X-ray continuum from lunar surface: Results from High Energy X-ray spectrometer (HEX) onboard Chandrayaan-1

S. V. Vadawale; P. Sreekumar; Y. B. Acharya; M. Shanmugam; D. Banerjee; J. N. Goswami; N. Bhandari; C. N. Umapathy; M. R. Sharma; A. Tyagi; M. Bug; M. Sudhakar; L. Abraham

doi:10.1016/j.asr.2013.06.013

Hard X-ray continuum from lunar surface: Results from High Energy X-ray spectrometer (HEX) onboard Chandrayaan-1

S. V. Vadawale^*
, P. Sreekumar
, Y. B. Acharya
, M. Shanmugam
, D. Banerjee
, J. N. Goswami
, N. Bhandari
, C. N. Umapathy
, M. R. Sharma
, A. Tyagi
, M. Bug
, M. Sudhakar
, L. Abraham

^*Corresponding author for this work

Manipal Centre for Natural Sciences, Manipal

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

The High Energy X-ray spectrometer (HEX) on Chandrayaan-1 was designed to study the photon emission in the range of 30-270 keV from naturally occurring radioactive decay of ²³⁸ U and ²³² Th series nuclides from the lunar surface. The primary objective of HEX was to study the transport of volatiles on the lunar surface using radon as a tracer and mapping the 46.5 keV line from ²¹⁰ Pb, a decay product of ²²² Rn. HEX was tested for two days during the commissioning phase of Chandrayaan-1 and performance of all sub systems was found to be as expected. HEX started collecting science data during the first non-prime imaging season (February-April, 2009) of Chandrayaan-1. Certain anomalies persisted in this data set and the early curtailment of Chandrayaan-1 mission in August, 2009, did not allow any further operation of HEX. Despite these issues, HEX provided the first data set for 30-270 keV continuum emission, averaged over a significant portion of the lunar surface, including the polar region.

Original language	English
Pages (from-to)	2041-2049
Number of pages	9
Journal	Advances in Space Research
Volume	54
Issue number	10
DOIs	https://doi.org/10.1016/j.asr.2013.06.013
Publication status	Published - 15-11-2014

All Science Journal Classification (ASJC) codes

Aerospace Engineering
Astronomy and Astrophysics
Geophysics
Atmospheric Science
Space and Planetary Science
General Earth and Planetary Sciences

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10.1016/j.asr.2013.06.013

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Vadawale, S. V., Sreekumar, P., Acharya, Y. B., Shanmugam, M., Banerjee, D., Goswami, J. N., Bhandari, N., Umapathy, C. N., Sharma, M. R., Tyagi, A., Bug, M., Sudhakar, M., & Abraham, L. (2014). Hard X-ray continuum from lunar surface: Results from High Energy X-ray spectrometer (HEX) onboard Chandrayaan-1. Advances in Space Research, 54(10), 2041-2049. https://doi.org/10.1016/j.asr.2013.06.013

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title = "Hard X-ray continuum from lunar surface: Results from High Energy X-ray spectrometer (HEX) onboard Chandrayaan-1",

abstract = " The High Energy X-ray spectrometer (HEX) on Chandrayaan-1 was designed to study the photon emission in the range of 30-270 keV from naturally occurring radioactive decay of 238 U and 232 Th series nuclides from the lunar surface. The primary objective of HEX was to study the transport of volatiles on the lunar surface using radon as a tracer and mapping the 46.5 keV line from 210 Pb, a decay product of 222 Rn. HEX was tested for two days during the commissioning phase of Chandrayaan-1 and performance of all sub systems was found to be as expected. HEX started collecting science data during the first non-prime imaging season (February-April, 2009) of Chandrayaan-1. Certain anomalies persisted in this data set and the early curtailment of Chandrayaan-1 mission in August, 2009, did not allow any further operation of HEX. Despite these issues, HEX provided the first data set for 30-270 keV continuum emission, averaged over a significant portion of the lunar surface, including the polar region.",

author = "Vadawale, \{S. V.\} and P. Sreekumar and Acharya, \{Y. B.\} and M. Shanmugam and D. Banerjee and Goswami, \{J. N.\} and N. Bhandari and Umapathy, \{C. N.\} and Sharma, \{M. R.\} and A. Tyagi and M. Bug and M. Sudhakar and L. Abraham",

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Vadawale, SV, Sreekumar, P, Acharya, YB, Shanmugam, M, Banerjee, D, Goswami, JN, Bhandari, N, Umapathy, CN, Sharma, MR, Tyagi, A, Bug, M, Sudhakar, M & Abraham, L 2014, 'Hard X-ray continuum from lunar surface: Results from High Energy X-ray spectrometer (HEX) onboard Chandrayaan-1', Advances in Space Research, vol. 54, no. 10, pp. 2041-2049. https://doi.org/10.1016/j.asr.2013.06.013

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AU - Vadawale, S. V.

AU - Sreekumar, P.

AU - Acharya, Y. B.

AU - Shanmugam, M.

AU - Banerjee, D.

AU - Goswami, J. N.

AU - Bhandari, N.

AU - Umapathy, C. N.

AU - Sharma, M. R.

AU - Tyagi, A.

AU - Bug, M.

AU - Sudhakar, M.

AU - Abraham, L.

PY - 2014/11/15

Y1 - 2014/11/15

N2 - The High Energy X-ray spectrometer (HEX) on Chandrayaan-1 was designed to study the photon emission in the range of 30-270 keV from naturally occurring radioactive decay of 238 U and 232 Th series nuclides from the lunar surface. The primary objective of HEX was to study the transport of volatiles on the lunar surface using radon as a tracer and mapping the 46.5 keV line from 210 Pb, a decay product of 222 Rn. HEX was tested for two days during the commissioning phase of Chandrayaan-1 and performance of all sub systems was found to be as expected. HEX started collecting science data during the first non-prime imaging season (February-April, 2009) of Chandrayaan-1. Certain anomalies persisted in this data set and the early curtailment of Chandrayaan-1 mission in August, 2009, did not allow any further operation of HEX. Despite these issues, HEX provided the first data set for 30-270 keV continuum emission, averaged over a significant portion of the lunar surface, including the polar region.

AB - The High Energy X-ray spectrometer (HEX) on Chandrayaan-1 was designed to study the photon emission in the range of 30-270 keV from naturally occurring radioactive decay of 238 U and 232 Th series nuclides from the lunar surface. The primary objective of HEX was to study the transport of volatiles on the lunar surface using radon as a tracer and mapping the 46.5 keV line from 210 Pb, a decay product of 222 Rn. HEX was tested for two days during the commissioning phase of Chandrayaan-1 and performance of all sub systems was found to be as expected. HEX started collecting science data during the first non-prime imaging season (February-April, 2009) of Chandrayaan-1. Certain anomalies persisted in this data set and the early curtailment of Chandrayaan-1 mission in August, 2009, did not allow any further operation of HEX. Despite these issues, HEX provided the first data set for 30-270 keV continuum emission, averaged over a significant portion of the lunar surface, including the polar region.

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JO - Advances in Space Research

JF - Advances in Space Research

IS - 10

ER -

Hard X-ray continuum from lunar surface: Results from High Energy X-ray spectrometer (HEX) onboard Chandrayaan-1

Abstract

All Science Journal Classification (ASJC) codes

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