Input interpretation
period 1 elements | neutron cross-section
Results
hydrogen | 0.332 b (barns) helium | 0.007 b (barns)
period 1 elements | neutron cross-section | 0.17 b (barns) (median)
Relative values
| visual | ratios | | comparisons helium | | 0.02 | 1 | 98% smaller hydrogen | | 1 | 50 | 5000% larger
Unit conversions for median neutron cross-section 0.17 b
170 mb (millibarns) (unit officially deprecated)
17 fm^2 (square femtometers)
1.7×10^-29 m^2 (square meters)
Comparisons for median neutron cross-section 0.17 b
≈ ( 0.18 ≈ 1/5 ) × cross-sectional area of a uranium nucleus ( ≈ 9.2×10^-29 m^2 )
≈ 0.25 × Thomson cross section ( ≈ 6.7×10^-29 m^2 )