High-Resolution Scanning of Sub-Surface Lunar Water with Mobile Neutron Energy Spectrometer, Phase I

Metadata Updated: February 28, 2019

This proposal describes a mobile solid-state Neutron Energy Spectrometer (NES) for lunar soil moisture determination. Cosmic-ray interactions within the lunar soil will yield secondary neutrons and protons, among other particles. The produced neutrons will travel within the soil, scattering off of materials such as hydrogen. Interactions with hydrogen will greatly reduce the energy of the neutrons, causing a measurable depression of epithermal neutrons. A measurement of the ratio between thermal and epithermal neutrons can therefore yield an understanding of the hydrogen content of the soil.[HTML_REMOVED] A previous collaboration between Radiation Detection Technologies, Inc. (RDT), Kansas State University (KSU), and Southwest Research Institute (SwRI) has developed and produced an instrument[HTML_REMOVED]which is capable of accurately measuring the hydrogen[HTML_REMOVED]content of soil based on neutron emissions from the surface. [HTML_REMOVED]The TRL 3 instrument utilizes alternating layers of neutron moderator (HDPE) and solid-state neutron detectors, with each incremental detector layer more sensitive to higher-energy neutrons than the previous. The NES can effectively scan for water at the lunar surface from zero altitude, which allows for unmatched spatial resolution. Proposed in Phase I, existing computational models will be refined and validated using the existing NES in real-world measurements. The updated computational models will be used to design a space-worthy instrument that will serve the purpose of determining the moisture content of the lunar soil. An early feasibility study will be conducted to determine what weaknesses exist in the present design in terms of survivability of the instrument under the worst of lunar conditions.[HTML_REMOVED]In Phase II, the proposed assembly will be developed to TRL 6, wherein a roving prototype will be built and tested.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Metadata Created Date February 28, 2019
Metadata Updated Date February 28, 2019

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Harvested from NASA Data.json

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Resource Type Dataset
Metadata Created Date February 28, 2019
Metadata Updated Date February 28, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_94607
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id be31338b-5ce7-4fff-9474-25c8b5c69634
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2019-01-01
Homepage URL https://techport.nasa.gov/view/94607
License http://www.usa.gov/publicdomain/label/1.0/
Data Last Modified 2018-09-07
Program Code 026:027
Source Datajson Identifier True
Source Hash e85631852480810d8d1cfee1a326a78760846349
Source Schema Version 1.1

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