| 1. | A gamma ray spectrometer analyzed the chemical composition of the crust.
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| 2. | Davis's post-graduate work at the Cavendish Laboratory at double X-ray spectrometer.
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| 3. | The gamma-ray spectrometer was designed to detect these types of rocks.
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| 4. | He developed a high resolution x-ray spectrometer with a graduate student, John Harry Williams.
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| 5. | The crust of Venus was analyzed with the soil drill experiment and a gamma ray spectrometer.
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| 6. | It left a NEAR instrument, the gamma ray spectrometer, just 4 inches from the asteroid surface.
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| 7. | However, global-scale surface composition can be inferred from the Mars Odyssey gamma-ray spectrometer ( GRS ).
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| 8. | Germanium crystals are also used in X-ray spectrometers for the determination of phosphorus, chlorine and sulfur.
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| 9. | The rover's main instrument for analyzing soil and rock chemistry is an alpha proton X-ray spectrometer.
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| 10. | This effectively shut down the X-ray Spectrometer ( XRS ), which was the spacecraft's primary instrument.
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