Research Article

On the Cosmic Ray-Induced Ionization Rate in Molecular Clouds

Table 2

Compilation of the absorbed energy flux via electronic (e) and nuclear ( 𝑛 ) interaction and the total integrated proton flux versus the depth for six distinct models (Table 1). 𝐸 l o w e s t indicates the computed minimum energy of the CR protons penetrating to the depth 𝑑 .

ModelDepth, 𝑑 , pc 𝐸 l o w e s t , eVIntegrated flux, particles cm−2 s−1Absorbed energy flux, eV cm−2 s−1 (e)Absorbed energy flux, eV cm−2 s−1 ( 𝑛 )

M10.0 1 0 . 0 × 1 0 6 21.0 0.0 0.0
1.0 8 . 9 5 × 1 0 6 21.0 9 . 1 7 × 1 0 6 7 . 5 1 × 1 0 3
2.0 8 . 8 6 × 1 0 6 20.9 1 . 8 2 × 1 0 7 1 . 5 0 × 1 0 4
4.0 8 . 6 4 × 1 0 6 19.9 3 . 6 2 × 1 0 7 3 . 0 0 × 1 0 4
8.0 7 . 8 3 × 1 0 6 17.7 7 . 1 2 × 1 0 7 6 . 0 0 × 1 0 4
10.0 6 . 5 0 × 1 0 6 16.4 8 . 3 1 × 1 0 7 7 . 2 0 × 1 0 4

M20.0 1 0 . 0 × 1 0 6 9.27 0.0 0.0
1.0 8 . 9 5 × 1 0 6 9.26 1 . 6 6 × 1 0 6 1 . 2 1 × 1 0 3
2.0 8 . 8 6 × 1 0 6 9.21 3 . 3 2 × 1 0 6 2 . 4 1 × 1 0 3
4.0 8 . 6 4 × 1 0 6 9.12 6 . 6 2 × 1 0 6 4 . 8 2 × 1 0 3
8.0 7 . 8 3 × 1 0 6 8.92 1 . 3 2 × 1 0 7 9 . 7 2 × 1 0 3
10.0 6 . 5 0 × 1 0 6 8.82 1 . 6 3 × 1 0 7 1 . 2 0 × 1 0 4

M30.0 5 0 . 0 × 1 0 6 9.23 0.0 0.0
1.0 4 9 . 7 × 1 0 6 9.23 1 . 1 5 × 1 0 6 7 . 5 2 × 1 0 2
2.0 4 9 . 7 × 1 0 6 9.23 2 . 3 0 × 1 0 6 1 . 5 0 × 1 0 3
4.0 4 9 . 7 × 1 0 6 9.21 4 . 6 0 × 1 0 6 3 . 0 0 × 1 0 3
8.0 4 9 . 7 × 1 0 6 9.17 9 . 1 8 × 1 0 6 6 . 0 0 × 1 0 3
10.0 4 9 . 7 × 1 0 6 9.14 1 . 1 6 × 1 0 7 7 . 7 0 × 1 0 3

M40.0 5 0 . 0 × 1 0 6 7.61 0.0 0.0
1.0 4 9 . 7 × 1 0 6 7.61 8 . 4 8 × 1 0 5 5 . 3 4 × 1 0 2
2.0 4 9 . 7 × 1 0 6 7.61 1 . 7 0 × 1 0 6 1 . 0 7 × 1 0 3
4.0 4 9 . 7 × 1 0 6 7.59 3 . 3 9 × 1 0 6 2 . 1 4 × 1 0 3
8.0 4 9 . 7 × 1 0 6 7.56 6 . 7 7 × 1 0 6 4 . 2 8 × 1 0 3
10.0 4 9 . 7 × 1 0 6 7.54 8 . 6 3 × 1 0 6 5 . 6 2 × 1 0 3

M50.0 1 0 0 . 0 × 1 0 6 6.49 0.0 0.0
1.0 9 9 . 8 × 1 0 6 6.49 5 . 5 9 × 1 0 5 3 . 1 4 × 1 0 2
2.0 9 9 . 8 × 1 0 6 6.49 1 . 1 2 × 1 0 6 6 . 2 7 × 1 0 2
4.0 9 9 . 8 × 1 0 6 6.48 2 . 2 3 × 1 0 6 1 . 2 5 × 1 0 3
8.0 9 9 . 8 × 1 0 6 6.47 4 . 4 7 × 1 0 6 2 . 5 1 × 1 0 3
10.0 9 9 . 8 × 1 0 6 6.46 5 . 6 3 × 1 0 6 3 . 2 0 × 1 0 3

M60.0 1 0 0 . 0 × 1 0 6 5.97 0.0 0.0
1.0 9 9 . 8 × 1 0 6 5.97 5 . 0 7 × 1 0 5 2 . 8 3 × 1 0 2
2.0 9 9 . 8 × 1 0 6 5.97 1 . 0 1 × 1 0 6 5 . 6 7 × 1 0 2
4.0 9 9 . 8 × 1 0 6 5.96 2 . 0 3 × 1 0 6 1 . 1 3 × 1 0 3
8.0 9 9 . 8 × 1 0 6 5.95 4 . 0 5 × 1 0 6 2 . 2 7 × 1 0 3
10.0 9 9 . 8 × 1 0 6 5.95 5 . 1 0 × 1 0 6 2 . 8 8 × 1 0 3