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@prefix dct: <http://purl.org/dc/terms/> .
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@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

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    dct:description "We propose a system capable of probing the molecular composition of cold solar system targets such as asteroids, comets, planets and moons from a distant vantage. Our concept utilizes a directed energy beam to vaporize or sublimate a spot on a distant target, such as from a spacecraft near the object. With sufficient flux, our published results indicate that the spot temperature rises rapidly, and evaporation of materials on the target surface occurs (Hughes et al., 2015; Lubin and Hughes, 2015; Lubin et al., 2014). The melted spot serves as a high-temperature blackbody source, and ejected material creates a molecular plume in front of the spot. Molecular and atomic absorption of the blackbody radiation occurs within the ejected plume. Bulk composition of the surface material is investigated by using a spectrometer to view the heated spot through the ejected material. We envision a spacecraft that could be sent to probe the composition of a target asteroid, comet or other planetary body while orbiting the targeted object. The spacecraft would be equipped with an array of lasers and a spectrometer, powered by photovoltaics. Spatial composition maps could be created by scanning the directed energy beam across the surface. Applying the laser beam to a single spot continuously produces a borehole, and shallow sub-surface composition profiling is also possible. Our initial simulations of laser heating, plume opacity, material absorption profiles and spectral detectivity show promise for molecular composition analysis. Such a system has compelling potential benefit for solar system exploration by establishing the capability to directly interrogate the bulk composition of objects from a distant vantage. We propose to develop models, execute preliminary feasibility analysis, and specify a spacecraft system architecture for a hypothetical mission that seeks to perform surface molecular composition analysis and mapping of a near-earth asteroid (NEA) while the craft orbits the asteroid." ;
    dct:identifier "TECHPORT_88498" ;
    dct:issued "2017-06-01"^^xsd:date ;
    dct:modified "2020-01-29"^^xsd:date ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:title "Molecular Composition Analysis of Distant Targets" ;
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            vcard:fn "TECHPORT SUPPORT" ;
            vcard:hasEmail <mailto:hq-techport@mail.nasa.gov> ] ;
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    dct:title "Molecular Composition Analysis of Distant Targets" ;
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    dct:title "Molecular Composition Analysis of Distant Targets" ;
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<https://data.amerigeoss.org/dataset/3231ccd1-b9d0-4016-a088-bdaabf9dc79d/resource/aa3779a6-27b6-48fe-adda-9f584ddc566a> a dcat:Distribution ;
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    dct:title "Molecular Composition Analysis of Distant Targets" ;
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    dct:title "Molecular Composition Analysis of Distant Targets" ;
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