Particle acceleration mechanisms
First-order Fermi acceleration"; first-order refers to physics laws (e.g. Newton's Laws) - however no other explanations come up for it here, and there is also the mention of injection index in a related way.
First-order Fermi acceleration"; first-order refers to physics laws (e.g. Newton's Laws) - however no other explanations come up for it here, and there is also the mention of injection index in a related way.