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Instruments > Solar/Space Observing Instruments > Particle Detectors > CRIS

Preferred term

CRIS  

Definition

  • The Cosmic Ray Isotope Spectrometer (CRIS) on the Advanced Composition Explorer (ACE) spacecraft is intended to be a major step in ascertaining the isotopic composition of the cosmic rays and hence a major step in determining their origin. The Galactic cosmic rays (GCRs) consist, by number, primarily of hydrogen nuclei (~92%) and He nuclei (~7%). The heavier nuclei (1%) provide most of the information about cosmic-ray origin through their elemental and isotopic composition. The intensities of these heavy cosmic rays are very low and progress in the past has been impeded by limited particle collection power, particularly regarding individual isotopes. CRIS is designed to have far greater collection power (~250 cm2-sr) than previous satellite instruments ( < 10 cm2-sr) while still maintaining excellent isotopic resolution up through Z=30 (Zinc) and beyond. See: http://www.srl.caltech.edu/ACE/CRIS_SIS/cris.html Group: Instrument_Details Entry_ID: CRIS Group: Instrument_Identification Instrument_Category: Solar/Space Observing Instruments Instrument_Class: Particle Detectors Short_Name: CRIS Long_Name: Cosmic Ray Isotope Spectrometer End_Group Group: Associated_Platforms Short_Name: ACE End_Group Online_Resource: http://www.srl.caltech.edu/ACE/CRIS_SIS/cris.html Online_Resource: http://www.srl.caltech.edu/ACE/CRIS_SIS/crishw.html Sample_Image: http://www.srl.caltech.edu/ACE/CRIS_SIS/images/CRIS.jpeg Group: Instrument_Logistics Data_Rate: 0.464 kbps Instrument_Start_Date: 1997-08-25 Instrument_Owner: NASA Instrument_Owner: California Institute of Technology Instrument_Owner: Washington University, St. Louis End_Group End_Group (en)

Broader concept

URI

https://gcmd.earthdata.nasa.gov/kms/concept/69392904-2027-4e56-a312-c1905166f632

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