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. Author manuscript; available in PMC: 2020 Jul 24.
Published in final edited form as: Astrophys J. 2016 May 5;822(2):65. doi: 10.3847/0004-637x/822/2/65

Table 2:

Helium flux at the top of atmosphere

BESS-Polar I BESS-Polar II
Energy Range (GeV/nucleon) Ek (GeV/nucleon) Flux ± ΔFsta ± ΔFsys (m2 sr s GeV/nucleon)−1 Flux ± ΔFsta ± ΔFsys (m2 sr s GeV/nucleon)−1
0.150–0.159 0.154 1.346 ± 0.018 ± 0.037 × 102 3.241 ± 0.009 ± 0.082 × 102
0.159–0.168 0.163 1.406 ± 0.018 ± 0.038 × 102 3.312 ± 0.009 ± 0.084 × 102
0.168–0.178 0.173 1.470 ± 0.017 ± 0.039 × 102 3.367 ± 0.009 ± 0.086 × 102
0.178–0.188 0.183 1.540 ± 0.017 ± 0.041 × 102 3.431 ± 0.009 ± 0.087 × 102
0.188–0.200 0.194 1.601 ± 0.017 ± 0.042 × 102 3.440 ± 0.008 ± 0.088 × 102
0.200–0.211 0.205 1.583 ± 0.016 ± 0.041 × 102 3.429 ± 0.008 ± 0.088 × 102
0.211–0.224 0.218 1.662 ± 0.016 ± 0.043 × 102 3.398 ± 0.008 ± 0.088 × 102
0.224–0.237 0.231 1.654 ± 0.015 ± 0.042 × 102 3.372 ± 0.007 ± 0.087 × 102
0.237–0.251 0.244 1.674 ± 0.015 ± 0.043 × 102 3.308 ± 0.007 ± 0.086 × 102
0.251–0.266 0.259 1.706 ± 0.014 ± 0.043 × 102 3.245 ± 0.007 ± 0.085 × 102
0.266–0.282 0.274 1.676 ± 0.014 ± 0.042 × 102 3.184 ± 0.007 ± 0.083 × 102
0.282–0.298 0.290 1.675 ± 0.013 ± 0.042 × 102 3.080 ± 0.006 ± 0.081 × 102
0.298–0.316 0.307 1.646 ± 0.013 ± 0.042 × 102 3.016 ± 0.006 ± 0.079 × 102
0.316–0.335 0.326 1.630 ± 0.012 ± 0.041 × 102 2.911 ± 0.006 ± 0.076 × 102
0.335–0.355 0.345 1.605 ± 0.012 ± 0.041 × 102 2.818 ± 0.005 ± 0.074 × 102
0.355–0.376 0.365 1.604 ± 0.011 ± 0.041 × 102 2.731 ± 0.005 ± 0.072 × 102
0.376–0.398 0.387 1.573 ± 0.011 ± 0.040 × 102 2.620 ± 0.005 ± 0.069 × 102
0.398–0.422 0.410 1.531 ± 0.010 ± 0.039 × 102 2.530 ± 0.005 ± 0.067 × 102
0.422–0.447 0.434 1.498 ± 0.010 ± 0.038 × 102 2.416 ± 0.004 ± 0.065 × 102
0.447–0.473 0.460 1.467 ± 0.009 ± 0.038 × 102 2.319 ± 0.004 ± 0.062 × 102
0.473–0.501 0.487 1.425 ± 0.009 ± 0.037 × 102 2.217 ± 0.004 ± 0.060 × 102
0.501–0.531 0.516 1.382 ± 0.009 ± 0.036 × 102 2.110 ± 0.004 ± 0.058 × 102
0.531–0.562 0.546 1.338 ± 0.008 ± 0.035 × 102 2.010 ± 0.004 ± 0.056 × 102
0.562–0.596 0.579 1.272 ± 0.008 ± 0.034 × 102 1.908 ± 0.003 ± 0.053 × 102
0.596–0.631 0.613 1.230 ± 0.007 ± 0.033 × 102 1.805 ± 0.003 ± 0.051 × 102
0.631–0.668 0.649 1.195 ± 0.007 ± 0.032 × 102 1.701 ± 0.003 ± 0.049 × 102
0.668–0.708 0.688 1.133 ± 0.007 ± 0.031 × 102 1.604 ± 0.003 ± 0.047 × 102
0.708–0.750 0.729 1.079 ± 0.006 ± 0.030 × 102 1.511 ± 0.003 ± 0.044 × 102
0.750–0.794 0.772 1.026 ± 0.006 ± 0.028 × 102 1.419 ± 0.003 ± 0.042 × 102
0.794–0.841 0.818 9.866 ± 0.055 ± 0.273 × 101 1.326 ± 0.002 ± 0.039 × 102
0.841–0.891 0.866 9.291 ± 0.052 ± 0.258 × 101 1.240 ± 0.002 ± 0.037 × 102
0.891–0.944 0.917 8.909 ± 0.050 ± 0.248 × 101 1.153 ± 0.002 ± 0.034 × 102
0.944–1.000 0.972 8.162 ± 0.046 ± 0.228 × 101 1.071 ± 0.002 ± 0.032 × 102
1.000–1.080 1.039 7.661 ± 0.037 ± 0.214 × 101 9.850 ± 0.016 ± 0.292 × 101
1.080–1.166 1.122 6.971 ± 0.034 ± 0.195 × 101 8.855 ± 0.014 ± 0.262 × 101
1.166–1.259 1.212 6.444 ± 0.032 ± 0.180 × 101 7.929 ± 0.013 ± 0.234 × 101
1.259–1.359 1.308 5.773 ± 0.029 ± 0.161 × 101 7.099 ± 0.012 ± 0.210 × 101
1.359–1.468 1.413 5.209 ± 0.027 ± 0.145 × 101 6.342 ± 0.011 ± 0.187 × 101
1.468–1.585 1.525 4.724 ± 0.025 ± 0.132 × 101 5.613 ± 0.010 ± 0.166 × 101
1.585–1.711 1.647 4.188 ± 0.022 ± 0.116 × 101 4.962 ± 0.009 ± 0.146 × 101
1.711–1.848 1.778 3.749 ± 0.020 ± 0.104 × 101 4.360 ± 0.008 ± 0.128 × 101
1.848–1.995 1.920 3.331 ± 0.018 ± 0.092 × 101 3.840 ± 0.007 ± 0.113 × 101
1.995–2.154 2.073 2.944 ± 0.017 ± 0.081 × 101 3.376 ± 0.007 ± 0.099 × 101
2.154–2.326 2.239 2.616 ± 0.015 ± 0.071 × 101 2.953 ± 0.006 ± 0.086 × 101
2.326–2.512 2.417 2.274 ± 0.014 ± 0.062 × 101 2.572 ± 0.005 ± 0.075 × 101
2.512–2.712 2.610 2.004 ± 0.012 ± 0.054 × 101 2.227 ± 0.005 ± 0.065 × 101
2.712–2.929 2.818 1.759 ± 0.011 ± 0.047 × 101 1.936 ± 0.004 ± 0.056 × 101
2.929–3.162 3.043 1.522 ± 0.010 ± 0.041 × 101 1.671 ± 0.004 ± 0.048 × 101
3.162–3.481 3.318 1.297 ± 0.008 ± 0.035 × 101 1.414 ± 0.003 ± 0.041 × 101
3.481–3.831 3.652 1.077 ± 0.007 ± 0.029 × 101 1.167 ± 0.003 ± 0.034 × 101
3.831–4.217 4.019 8.975 ± 0.060 ± 0.236 9.528 ± 0.023 ± 0.272
4.217–4.642 4.424 7.281 ± 0.052 ± 0.191 7.807 ± 0.020 ± 0.223
4.642–5.109 4.869 6.050 ± 0.045 ± 0.159 6.403 ± 0.018 ± 0.182
5.109–5.623 5.360 4.949 ± 0.039 ± 0.130 5.190 ± 0.015 ± 0.148
5.623–6.190 5.899 3.934 ± 0.033 ± 0.103 4.157 ± 0.013 ± 0.118
6.190–6.813 6.493 3.228 ± 0.029 ± 0.085 3.355 ± 0.011 ± 0.096
6.813–7.499 7.147 2.574 ± 0.025 ± 0.068 2.700 ± 0.009 ± 0.077
7.499–8.254 7.866 2.044 ± 0.021 ± 0.054 2.159 ± 0.008 ± 0.061
8.254–9.085 8.658 1.675 ± 0.018 ± 0.045 1.727 ± 0.007 ± 0.049
9.085–10.00 9.530 1.288 ± 0.015 ± 0.035 1.355 ± 0.006 ± 0.039
10.00–11.22 10.59 1.020 ± 0.012 ± 0.028 1.061 ± 0.004 ± 0.030
11.22–12.59 11.88 7.776 ± 0.096 ± 0.216 × 10−1 7.912 ± 0.036 ± 0.228 × 10−1
12.59–14.13 13.33 5.714 ± 0.078 ± 0.162 × 10−1 5.970 ± 0.030 ± 0.172 × 10−1
14.13–15.85 14.96 4.305 ± 0.064 ± 0.125 × 10−1 4.478 ± 0.025 ± 0.130 × 10−1
15.85–17.78 16.78 3.230 ± 0.052 ± 0.096 × 10−1 3.330 ± 0.020 ± 0.097 × 10−1
17.78–19.95 18.83 2.415 ± 0.043 ± 0.075 × 10−1 2.498 ± 0.016 ± 0.074 × 10−1
19.95–22.39 21.13 1.697 ± 0.034 ± 0.054 × 10−1 1.826 ± 0.013 ± 0.055 × 10−1
22.39–25.12 23.71 1.322 ± 0.028 ± 0.044 × 10−1 1.377 ± 0.011 ± 0.042 × 10−1
25.12–28.18 26.60 9.943 ± 0.234 ± 0.343 × 10−2 1.004 ± 0.009 ± 0.031 × 10−1
28.18–31.62 29.84 7.177 ± 0.188 ± 0.258 × 10−2 7.565 ± 0.072 ± 0.240 × 10−2
31.62–38.31 34.77 4.778 ± 0.110 ± 0.181 × 10−2 4.901 ± 0.042 ± 0.161 × 10−2
38.31–46.42 42.12 2.837 ± 0.077 ± 0.113 × 10−2 2.950 ± 0.029 ± 0.101 × 10−2
46.42–56.23 51.03 1.750 ± 0.055 ± 0.074 × 10−2 1.774 ± 0.021 ± 0.066 × 10−2
56.23–68.13 61.83 1.121 ± 0.040 ± 0.049 × 10−2 1.109 ± 0.015 ± 0.044 × 10−2
68.13–82.54 74.91 6.627 ± 0.283 ± 0.320 × 10−3 6.546 ± 0.104 ± 0.293 × 10−3