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MSL: APXS (Alpha Particle X-ray Spectrometer)

March 15, 2024. MSL Release 35 includes new APXS raw (EDR) and derived (RDR) data from sols 3903-3999, July 29, 2023 - November 6, 2023.

The Alpha Particle X-ray Spectrometer (APXS) measures the abundance of chemical elements in rocks and soils. The APXS is placed in contact with rock and soil samples on Mars and exposes the material to alpha particles and X-rays emitted during the radioactive decay of the element curium. APXS data sets are produced by the APXS Science Team at the University of Guelph, Ontario, Canada. The APXS is funded by the Canadian Space Agency.

APXS Data Sets

Raw Data Products
EDR - Experiment Data Records
Derived Data Products
RDR - Reduced Data Records
    Product type APXS_RSP: summed X-ray spectra (files named *rsp*.csv)
    Product type APXS_RWP: oxide abundance data  (files named *rwp*.csv)

Derived APXS Data Sets from Individual Investigators

Overview of MSL APXS Targets from Sol 0 to 2301 (PDS4)
Jeff Berger, JGR 2020
Summary and Geological Context of MSL APXS Targets from Sol 0 to 3076 (PDS4)
Jeff Berger, JGR 2022

Online Tools

MSL ANB MSL Analyst's Notebook  - This PDS Geosciences Node tool provides access to MSL data in the context of mission operations -- by sol, location, instrument, and other criteria.

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Curator: Jennifer Ward
NASA Official: Paul Byrne
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