barn | 1 b | 2 b | 3 b | 4 b | 5 b | 6 b | 7 b | 8 b | 9 b | 10 b | 11 b | 12 b | 13 b | 14 b | 15 b | 16 b | 17 b | 18 b | 19 b | 20 b | 21 b | 22 b | 23 b | 24 b | 25 b | 26 b | 27 b | 28 b | 29 b | 30 b | 31 b | 32 b | 33 b | 34 b | 35 b | 36 b | 37 b | 38 b | 39 b | 40 b | 41 b | 42 b | 43 b | 44 b | 45 b | 46 b | 47 b | 48 b | 49 b | 50 b | 51 b | 52 b | 53 b | 54 b | 55 b | 56 b | 57 b | 58 b | 59 b | 60 b | 61 b | 62 b | 63 b | 64 b | 65 b | 66 b | 67 b | 68 b | 69 b | 70 b | 71 b | 72 b | 73 b | 74 b | 75 b | 76 b | 77 b | 78 b | 79 b | 80 b | 81 b | 82 b | 83 b | 84 b | 85 b | 86 b | 87 b | 88 b | 89 b | 90 b | 91 b | 92 b | 93 b | 94 b | 95 b | 96 b | 97 b | 98 b | 99 b | 100 b |
kilobarn | 0.001 kb | 0.002 kb | 0.003 kb | 0.004 kb | 0.005 kb | 0.006 kb | 0.007 kb | 0.008 kb | 0.009 kb | 0.01 kb | 0.011 kb | 0.012 kb | 0.013 kb | 0.014 kb | 0.015 kb | 0.016 kb | 0.017 kb | 0.018 kb | 0.019 kb | 0.02 kb | 0.021 kb | 0.022 kb | 0.023 kb | 0.024 kb | 0.025 kb | 0.026 kb | 0.027 kb | 0.028 kb | 0.029 kb | 0.03 kb | 0.031 kb | 0.032 kb | 0.033 kb | 0.034 kb | 0.035 kb | 0.036 kb | 0.037 kb | 0.038 kb | 0.039 kb | 0.04 kb | 0.041 kb | 0.042 kb | 0.043 kb | 0.044 kb | 0.045 kb | 0.046 kb | 0.047 kb | 0.048 kb | 0.049 kb | 0.05 kb | 0.051 kb | 0.052 kb | 0.053 kb | 0.054 kb | 0.055 kb | 0.056 kb | 0.057 kb | 0.058 kb | 0.059 kb | 0.06 kb | 0.061 kb | 0.062 kb | 0.063 kb | 0.064 kb | 0.065 kb | 0.066 kb | 0.067 kb | 0.068 kb | 0.069 kb | 0.07 kb | 0.071 kb | 0.072 kb | 0.073 kb | 0.074 kb | 0.075 kb | 0.076 kb | 0.077 kb | 0.078 kb | 0.079 kb | 0.08 kb | 0.081 kb | 0.082 kb | 0.083 kb | 0.084 kb | 0.085 kb | 0.086 kb | 0.087 kb | 0.088 kb | 0.089 kb | 0.09 kb | 0.091 kb | 0.092 kb | 0.093 kb | 0.094 kb | 0.095 kb | 0.096 kb | 0.097 kb | 0.098 kb | 0.099 kb | 0.1 kb |
A barn (symbol: b) is a unit of area equal to 10−28 m2 (100 fm2). Originally used in nuclear physics for expressing the cross sectional area of nuclei and nuclear reactions, today it is also used in all fields of high-energy physics to express the cross sections of any scattering process, and is best understood as a measure of the probability of interaction between small particles.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
barn | b | ≡ 10−28 m2 | ≡ 10−28 m2 | Nuclear Physics |
barns | kilobarns | barns | kilobarns |
---|---|---|---|
1 | ≡ 0.001 | 6 | ≡ 0.006 |
2 | ≡ 0.002 | 7 | ≡ 0.007 |
3 | ≡ 0.003 | 8 | ≡ 0.008 |
4 | ≡ 0.004 | 9 | ≡ 0.009 |
5 | ≡ 0.005 | 10 | ≡ 0.01 |
A kilobarn (symbol: kb) is a unit of area equal to 10−25 m2.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
kilobarn | kb | ≡ 103 b | ≡ 10−25 m2 | Nuclear Physics |
kilobarns | barns | kilobarns | barns |
---|---|---|---|
1 | ≡ 1000 | 6 | ≡ 6000 |
2 | ≡ 2000 | 7 | ≡ 7000 |
3 | ≡ 3000 | 8 | ≡ 8000 |
4 | ≡ 4000 | 9 | ≡ 9000 |
5 | ≡ 5000 | 10 | ≡ 10000 |
barns | kilobarns |
---|---|
1 | ≡ 0.001 |
1 000 | ≡ 1 |
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |