Radiation and Detectors by Lucio Cerrito

Author:Lucio Cerrito
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

The minima are all occurring at between 3 and 4, for Z ranging from 2 to 100, dropping towards 3 for the heavier elements. On the horizontal axis, the labels indicate explicitly the momenta of muons, pions and protons corresponding to the same scale. Because heavy particles, such as muons, pions or protons are commonly occurring in today’s laboratories of high energy physics with values in the range of 2 to 100, these particles are also called minimum ionising .

At the minimum position of the Bethe-Block curve, the rate of energy loss is about 1–2 MeV cm/g for most materials. The plot in Fig. 6.5 shows the minimum value of the energy loss curve as a function of the target Z. The dependence is approximately linear in the natural logarithm of Z.

Fig. 6.5Minimum ionisation point as a function of target Z.

Reprinted from [5] with permission

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