linkedin post 2020-06-21 02:40:20
DEEP PENETRATION. “If a planet lacks an atmosphere, particles are able to directly strike the surface and the cascade of secondary particles is able to propagate underground. The secondary particles produced in the cascade, such as pions and kaons, are highly unstable, and quickly decay to other particles including beta particles (electrons and positrons) and gamma rays. It must be noted that beta particles and gamma rays are also produced during radioactive decay in underground rock. When charged pions decay muons are produced, and these can travel several kilometres deep depending on their energy.” https://royalsocietypublishing.org/doi/10.1098/rsif.2016.0459 View in LinkedIn