Delta ray

A 3D representation of a delta electron knocked out by a 180 GeV muon, measured with a GridPix detector at the SPS at CERN. The colour indicates the height

A delta ray is sometimes used to describe any recoil particle caused by secondary ionization. The term was coined by J.J. Thomson. A more modern definition is secondary electrons with enough energy to escape a significant distance away from the primary radiation beam and produce further ionization." Delta rays are entirely unrelated to the family of subatomic particles named delta baryon.

单词	Delta ray
释义	Delta ray 英语百科 Delta ray A delta ray is sometimes used to describe any recoil particle caused by secondary ionization. The term was coined by J.J. Thomson. A more modern definition is secondary electrons with enough energy to escape a significant distance away from the primary radiation beam and produce further ionization." Delta rays are entirely unrelated to the family of subatomic particles named delta baryon.
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