Radiation Shielding Materials Containing Hydrogen, Boron, and Nitrogen: Systematic Computational and Experimental Study

Metadata Updated: May 2, 2019

The objectives of the proposed research are to develop a space radiation shielding material system that has high efficacy for shielding radiation and also has high strength for load bearing primary structures. The NASA Langley Research Center, Jefferson National Lab, and National Institute of Aerospace as joint owners have recently synthesized long, highly crystalline boron nitride nanotubes (BNNT) using a novel pressure/vapor condensation method. The BNNT have extraordinary strength and high temperature stability. The BNNT are made up entirely of low Z (atomic number) atoms - boron and nitrogen. The BNNT can theoretically be processed into structural BNNT and used for load bearing structure. The BNNT are nanotubes; their molecular structure is attractive for hydrogenation. A comprehensive literature search - as well as independent thinking - will be performed to determine what is the best processing approach for hydrogenating the BNNT. Neutrons are produced as secondary radiation when the galactic cosmic radiation and solar energetic particles interact with the walls of the space structure and also with the regolith on the surfaces of Moon or planets. This secondary neutron radiation has largely been ignored in previous space architectures and yet neutron radiation is known to be damaging to humans especially with regard to the formation of radiogenic cancers. Radiation protection is an enabling technology for future exploration missions. The Agency cannot support human missions greater than approximately 90 to 100 days beyond LEO without developing shielding and/or biological countermeasures to remain below Permissible Exposure Limits. The Success Criteria are adequate shielding measures to enable safety of crew and hardware during long duration human missions up to 1 year in space. It is the intent of the proposed research to bring the Agency closer to extending space missions beyond the 100 days, with 1 year as a long-term goal.

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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 August 1, 2018
Metadata Updated Date May 2, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_4736
Maintainer
TECHPORT SUPPORT
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
Datagov Dedupe Retained 20190501230127
Harvest Object Id 034154e2-db60-4976-a219-8f24b9a50930
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2012-09-01
Homepage URL https://techport.nasa.gov/view/4736
License http://www.usa.gov/publicdomain/label/1.0/
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash 10166570c89a40f2891b4ed72ebe9b35510a8161
Source Schema Version 1.1

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