= Alpha particle X-ray spectrometer
{wiki=Alpha_particle_X-ray_spectrometer}
An Alpha Particle X-ray Spectrometer (APXS) is an analytical instrument used primarily in planetary science, geology, and material science to measure the elemental composition of a sample. The APXS works by utilizing alpha particles and X-rays to determine the presence and concentration of various elements within the material being analyzed. \#\#\# Key Features of APXS: 1. **Working Principle**: - The APXS generates alpha particles, which are emitted from a radioactive source, typically americium-241.
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