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Table 1 Muon range R and energy loss parameters calculated for standard rock. Range is given in km-water-equivalent.

From: Development of a portable assembly-type cosmic-ray muon module for measuring the density structure of a column of magma

E μ

R

a

b

(GeV)

(km.w.e)

(MeV g−1 cm2)

(MeV g−1 cm2)

10

0.05

2.15

1.91

100

0.41

2.40

3.12

1000

2.42

2.58

4.01

10000

6.30

2.76

4.40