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Updated: Jul 4, 2026
07:51
Measurements of Soil Carbon by Neutron-Gamma Analysis in Static and Scanning Modes
Published on: August 24, 2017
The Dynamic Albedo of Neutrons (DAN) experiment for NASA's 2009 Mars Science Laboratory
M L Litvak1, I G Mitrofanov, Yu N Barmakov
1Space Research Institute, Moscow, Russia. Litvak@mx.iki.rssi.ru
Astrobiology
|July 5, 2008
Summary
The Dynamic Albedo of Neutrons (DAN) instrument uses neutron-neutron activation analysis to detect subsurface water on Mars. This technology aids the Mars Science Laboratory rover in mapping water distribution. Keywords: DAN instrument, Mars subsurface water, neutron activation analysis.
Area of Science:
- Planetary Science
- Astrogeology
- Nuclear Geophysics
Background:
- The presence and distribution of water in the Martian subsurface are critical for understanding the planet's geological history and potential for past or present life.
- Previous missions have provided limited data on subsurface water, necessitating advanced instrumentation for in-situ analysis.
Purpose of the Study:
- To detail the physical principles and design of the Dynamic Albedo of Neutrons (DAN) instrument.
- To outline DAN's capability to measure the abundance and depth distribution of water within the Martian subsurface.
Main Methods:
- Utilizes neutron-neutron activation analysis, a technique adapted for space applications.
- Employs a neutron generator and detectors to probe the subsurface composition.
Main Results:
- The DAN instrument is designed to provide quantitative data on hydrogen content, indicative of water.
- Its measurements will be integrated with the Mars Science Laboratory (MSL) rover's traverse, mapping water resources along the mission's path.
Conclusions:
- The DAN instrument represents a significant advancement in the in-situ detection of Martian subsurface water.
- Data from DAN will enhance our understanding of Martian hydrology and habitability.
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