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        <title>Apollo 15 X-Ray Fluorescence Spectrometer Dataset Description</title>
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            <description>Apollo 15 X-Ray Fluorescence Spectrometer Dataset Description</description>
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            <start_date_time>1971-07-30T02:44:00Z</start_date_time>
            <stop_date_time>1971-08-04T18:23:00Z</stop_date_time>
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        <Primary_Result_Summary>
            <purpose>Science</purpose>
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            <name>Apollo 15</name>
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            <reference_type>document_to_associate</reference_type>
            <comment>Apollo 15 Preliminary Science Report</comment>
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            <reference_type>document_to_associate</reference_type>
            <comment>Apollo 16 Preliminary Science Report</comment>
        </Internal_Reference>
        <External_Reference>
            <doi>10.1126/science.175.4020.436</doi>
            <reference_text>
                Adler, I., J.I. Trombka, J. Gerard, P. Lowman,         
                R. Schamadebeck, H. Blodgett, E. Eller, L. Yin, R. Lamothe,               
                P. Gorenstein, and P. Bjorkholm, Apollo 15 Geochemical X-Ray              
                Fluorescence Experiment: Preliminary Report, Science, Vol. 175,           
                pp. 436-440, 1972, doi:10.1126/science.175.4020.436. 
            </reference_text>
        </External_Reference>
        <External_Reference>
            <reference_text>
                Adler, I., J. Gerard, J.I. Trombka, R. Schamadebeck,   
                P. Lowman, H. Blodgett, L. Yin, E. Eller, and R. Lamothe, The Apollo 15   
                X-Ray Fluorescence Experiment, Proc. Lunar Sci Conf. 3rd, Vol 3,          
                pp. 2157-2178, MIT Press, Cambridge, MA, 1972.  
            </reference_text>
        </External_Reference>
        <External_Reference>
            <doi>10.1126/science.177.4045.256</doi>
            <reference_text>
                Adler, I., J.I. Trombka, J. Gerard, P. Lowman,         
                R. Schamadebeck, H. Blodgett, E. Eller, L. Yin, R. Lamothe, G. Osswald,   
                P. Gorenstein, P. Bjorkholm, H. Gursky, and B. Harris, Apollo 16          
                Geochemical X-ray Fluorescence Experiment: Preliminary Report, Science,   
                Vol. 177, pp. 256-259, 1972, doi:0.1126/science.177.4045.256. 
            </reference_text>
        </External_Reference>
        <External_Reference>
            <reference_text>
                Adler, I., J.I., Trombka, R. Schmadebeck,              
                P. Lowman, and B. Harris, Results of the Apollo 15 and 16 X-ray           
                experiment, Proc. Lunar Sci Conf. 4th, Vol. 3, 2783-2792,                 
                Pergamon Press, New York, NY, 1973.
            </reference_text>
        </External_Reference>
        <External_Reference>
            <reference_text>
                Adler, I., J.I. Trombka, J. Gerard,                    
                R. Schmadebeck, and P. Lowman, X-ray fluorescence experiment,             
                Apollo 15 Preliminary Science Report, NASA SP-289, 17-1,                  
                published by NASA, Washington, D.C., 1972.
            </reference_text>
        </External_Reference>
        <External_Reference>
            <reference_text>
                Adler, I., J. Trombka, J. Gerard, P. Lowman,           
                R. Schmadebeck, H. Blodget, E. Eller, L. Yin, R. Lamothe, G. Osswald,   
                P. Gorenstein, P. Bjorkholm, H. Gursky, B. Harris, L. Golub,              
                F.R. Harnden, Jr.,  X-ray fluorescence experiment,                        
                Apollo 16 Preliminary Science Report, NASA SP-315, 19-1,                  
                published by NASA, Washington, D.C., 1972. 
            </reference_text>
        </External_Reference>
        <External_Reference>
            <reference_text>
                Adler I., J. Trombka, J. Gerard, R. Schmadebeck,       
                P. Lowman, H. Blodget, L. Yin, E. Eller, R. Lamothe, P. Gorenstein,       
                P. Bjorkholm, B. Harris, and H. Gursky, The Apollo X-Ray Fluorescence     
                Experiment, NASA TM X-65834, March, 1972. 
            </reference_text>
        </External_Reference>
        <External_Reference>
            <reference_text>
                Adler, I., R. Schmadebeck, J.I. Trombka,               
                P. Gorenstein, and P. Bjorkholm, The Apollo 15 and 16 X-Ray Fluorescence  
                Experiment, Space Science Instrumentation, 1, 305-316, 1975.  
            </reference_text>
        </External_Reference>
        <External_Reference>
            <reference_text>
                Adler, I., R. Schmadebeck, J.I. Trombka,               
                P. Gorenstein, and P. Bjorkholm, Apollo 15 and 16 X-ray fluorescence      
                experiment, Space Science Instrumentation, Vol. 1, No. 3, 305-316, 1975.
            </reference_text>
        </External_Reference>
        <External_Reference>
            <reference_text>
                ASE, Final Report - Apollo Lunar Orbital Sciences      
                Program Alpha and X-Ray Spectrometers, NASA CR-128649, American Science   
                and Engineering (ASE), Inc., Cambridge, Massachusetts, 1972.  
            </reference_text>
        </External_Reference>
        <External_Reference>
            <reference_text>
                Bielefeld, M., R. Reedy, A. Metzger, J. Trombka,       
                J. Arnold, Proc. Lunar Sci. Conf. 7th, 2661-2676, 1976.  
            </reference_text>
        </External_Reference>
        <External_Reference>
            <reference_text>
                Bielefeld, M.J., C.G. Andre, E.M. Eliason,             
                P.E. Clark, I. Adler, and J.I. Trombka, Imaging of lunar surface          
                chemistry from orbital X-ray data, Proc. Lunar Sci. Conf. 8th,            
                1, 901-908, 1977.
            </reference_text>
        </External_Reference>    
        <External_Reference>
            <reference_text>
                Clark P.E. and I. Adler, Utilization of independent    
                solar flux measurements to eliminate nongeochemical variation in X-ray    
                fluorescence data, Proc. Lunar Sci. Conf. 9th, 3, 3029-3036, 1978. 
            </reference_text>
        </External_Reference>   
        <External_Reference>
            <reference_text>
                Clark, P.E. and B.R. Hawke, Compositional variation    
                in the Hadley Apennine region, Proc. Lunar Sci. Conf. 12th, 727-749,      
                1981. 
            </reference_text>
        </External_Reference>   
        <External_Reference>
            <reference_text>
                Clark, P.E. and B.R. Hawke, The relationship           
                between geology and geochemistry in the Undarum/Spumans/Balmer            
                region of the moon, Earth Moon and Planets, 38, 97-112, 1987.
            </reference_text>
        </External_Reference>   
        <External_Reference>
            <reference_text>
                Clark, P.E. and B.R. Hawke, The lunar farside:         
                the nature of the highlands east of Smythii, Earth Moon and Planets,      
                53, 93-10, 1991.  
            </reference_text>
        </External_Reference>   
        <External_Reference>
            <reference_text>
                Clark, P.E., C.G. Andre, I. Adler, J. Weidner,         
                and M. Podwysocki, Palus Somni: anomalies in the correlation of Al/Si     
                X-ray fluorescence ratios and broad-spectrum albedo., Geophys. Res.       
                Lett., 3, 421-424, 1976. 
            </reference_text>
        </External_Reference>   
        <External_Reference>
            <reference_text>
                Clark, P.E., E. Eliason, C. Andre C., and              
                I. Adler, A new color correlation method applied to XRF Al/Si ratios      
                and other lunar remote sensing data,  Proc. Lunar Sci. Conf. 9th, 3,      
                3015-3027, 1978.
            </reference_text>
        </External_Reference>   
        <External_Reference>
            <doi>10.1086/157822</doi>
            <reference_text>
                Gilman, D., A.E. Metzger, R.H. Parker, L.G. Evans,     
                and J.I. Trombka, The Distance and Spectrum of the Apollo Gamma-Ray       
                Burst, Astrophysical Journal, 236, 951-957, 1980, 10.1086/157822.
            </reference_text>
        </External_Reference>
        <External_Reference>
            <doi>10.1109/TNS.1974.4327462</doi>
            <reference_text>
                Jagoda, N., K. Kubierschky, R. Frank, P. Bjorkholm,    
                and P. Gray, The Apollo X-Ray Fluorescence Spectrometer, IEEE             
                Transactions on Nuclear Science, Vol. NS-21, 194-200, Feb., 1974,         
                doi:10.1109/TNS.1974.4327462. 
            </reference_text>
        </External_Reference>   
        <External_Reference>
            <reference_text>
                Lauderdale, W., and W. Eichelman, Apollo Scientific    
                Experiments Data Handbook, NASA TM X-58131, Chapter 27, NASA,             
                Washington, D.C., August, 1974. 
            </reference_text>
        </External_Reference>   
        <External_Reference>
            <doi>10.1086/181660</doi>
            <reference_text>
                Metzger, A.E., R.H. Parker, D. Gilman, L.E. Peterson,  
                and J.I. Trombka, Observation of a Cosmic Gamma-Ray Burst on Apollo 16,   
                I - Temporal Variability and Energy Spectrum, Astrophysical Journal,      
                194, L19-L25, 1974, doi:10.1086/181660.  
            </reference_text>
        </External_Reference>   
        <External_Reference>
            <doi>10.1086/181661</doi>
            <reference_text>
                Trombka, J.I., E.L, Eller. R.L. Schmadebeck, I. Adler, 
                A.E. Metzger, D. Gilman, P. Gorenstein, and P. Bjorkholm, Observation of  
                a Cosmic Gamma-Ray Burst on Apollo 16, II - X-Ray Time Profile and        
                Source Location, Astrophysical Journal, 194, L27-L33, 1974,               
                doi:10.1086/181661.
            </reference_text>
        </External_Reference>   
        <External_Reference>
            <reference_text>
                Trombka, J.I., J.R. Arnold, I. Adler, A.E. Metzger,    
                and R.C. Reedy, Lunar elemental analysis obtained from the Apollo         
                gamma-ray and x-ray remote sensing experiment, Proceedings of the         
                Soviet-American Conference on the Cosmochemistry of the Moon and          
                Planets, Moscow, Soviet Union, NASA TM X-72195, 1974.
            </reference_text>
        </External_Reference> 
    </Reference_List>  
    <Document>
        <document_name>Apollo 15 X-Ray Fluorescence Spectrometer Dataset Description</document_name>
        <publication_date>2006-12-29</publication_date>
        <description>This is a description of the Apollo 15 X-Ray Fluorescence Spectrometer dataset, extracted from the 
          PDS3 dataset catalog file.</description>
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