femtobarn | 1 fb | 2 fb | 3 fb | 4 fb | 5 fb | 6 fb | 7 fb | 8 fb | 9 fb | 10 fb | 11 fb | 12 fb | 13 fb | 14 fb | 15 fb | 16 fb | 17 fb | 18 fb | 19 fb | 20 fb | 21 fb | 22 fb | 23 fb | 24 fb | 25 fb | 26 fb | 27 fb | 28 fb | 29 fb | 30 fb | 31 fb | 32 fb | 33 fb | 34 fb | 35 fb | 36 fb | 37 fb | 38 fb | 39 fb | 40 fb | 41 fb | 42 fb | 43 fb | 44 fb | 45 fb | 46 fb | 47 fb | 48 fb | 49 fb | 50 fb | 51 fb | 52 fb | 53 fb | 54 fb | 55 fb | 56 fb | 57 fb | 58 fb | 59 fb | 60 fb | 61 fb | 62 fb | 63 fb | 64 fb | 65 fb | 66 fb | 67 fb | 68 fb | 69 fb | 70 fb | 71 fb | 72 fb | 73 fb | 74 fb | 75 fb | 76 fb | 77 fb | 78 fb | 79 fb | 80 fb | 81 fb | 82 fb | 83 fb | 84 fb | 85 fb | 86 fb | 87 fb | 88 fb | 89 fb | 90 fb | 91 fb | 92 fb | 93 fb | 94 fb | 95 fb | 96 fb | 97 fb | 98 fb | 99 fb | 100 fb |
barn | 1.0 × 10-15 b | 2.0 × 10-15 b | 3.0 × 10-15 b | 4.0 × 10-15 b | 5.0 × 10-15 b | 6.0 × 10-15 b | 7.0 × 10-15 b | 8.0 × 10-15 b | 9.0 × 10-15 b | 1.0 × 10-14 b | 1.1 × 10-14 b | 1.2 × 10-14 b | 1.3 × 10-14 b | 1.4 × 10-14 b | 1.5 × 10-14 b | 1.6 × 10-14 b | 1.7 × 10-14 b | 1.8 × 10-14 b | 1.9 × 10-14 b | 2.0 × 10-14 b | 2.1 × 10-14 b | 2.2 × 10-14 b | 2.3 × 10-14 b | 2.4 × 10-14 b | 2.5 × 10-14 b | 2.6 × 10-14 b | 2.7 × 10-14 b | 2.8 × 10-14 b | 2.9 × 10-14 b | 3.0 × 10-14 b | 3.1 × 10-14 b | 3.2 × 10-14 b | 3.3 × 10-14 b | 3.4 × 10-14 b | 3.5 × 10-14 b | 3.6 × 10-14 b | 3.7 × 10-14 b | 3.8 × 10-14 b | 3.9 × 10-14 b | 4.0 × 10-14 b | 4.1 × 10-14 b | 4.2 × 10-14 b | 4.3 × 10-14 b | 4.4 × 10-14 b | 4.5 × 10-14 b | 4.6 × 10-14 b | 4.7 × 10-14 b | 4.8 × 10-14 b | 4.9 × 10-14 b | 5.0 × 10-14 b | 5.1 × 10-14 b | 5.2 × 10-14 b | 5.3 × 10-14 b | 5.4 × 10-14 b | 5.5 × 10-14 b | 5.6 × 10-14 b | 5.7 × 10-14 b | 5.8 × 10-14 b | 5.9 × 10-14 b | 6.0 × 10-14 b | 6.1 × 10-14 b | 6.2 × 10-14 b | 6.3 × 10-14 b | 6.4 × 10-14 b | 6.5 × 10-14 b | 6.6 × 10-14 b | 6.7 × 10-14 b | 6.8 × 10-14 b | 6.9 × 10-14 b | 7.0 × 10-14 b | 7.1 × 10-14 b | 7.2 × 10-14 b | 7.3 × 10-14 b | 7.4 × 10-14 b | 7.5 × 10-14 b | 7.6 × 10-14 b | 7.7 × 10-14 b | 7.8 × 10-14 b | 7.9 × 10-14 b | 8.0 × 10-14 b | 8.1 × 10-14 b | 8.2 × 10-14 b | 8.3 × 10-14 b | 8.4 × 10-14 b | 8.5 × 10-14 b | 8.6 × 10-14 b | 8.7 × 10-14 b | 8.8 × 10-14 b | 8.9 × 10-14 b | 9.0 × 10-14 b | 9.1 × 10-14 b | 9.2 × 10-14 b | 9.3 × 10-14 b | 9.4 × 10-14 b | 9.5 × 10-14 b | 9.6 × 10-14 b | 9.7 × 10-14 b | 9.8 × 10-14 b | 9.9 × 10-14 b | 1.0 × 10-13 b |
A femtobarn (symbol: fb) is a unit of area equal to 10−43 m2.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
femtobarn | fb | ≡ 10−43 m2 | ≡ 10−43 m2 | Nuclear Physics |
femtobarns | barns | femtobarns | barns |
---|---|---|---|
1 | ≡ 1.0E-15 | 6 | ≡ 6.0E-15 |
2 | ≡ 2.0E-15 | 7 | ≡ 7.0E-15 |
3 | ≡ 3.0E-15 | 8 | ≡ 8.0E-15 |
4 | ≡ 4.0E-15 | 9 | ≡ 9.0E-15 |
5 | ≡ 5.0E-15 | 10 | ≡ 1.0E-14 |
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 | femtobarns | barns | femtobarns |
---|---|---|---|
1 | ≡ 1.0E+15 | 6 | ≡ 6.0E+15 |
2 | ≡ 2.0E+15 | 7 | ≡ 7.0E+15 |
3 | ≡ 3.0E+15 | 8 | ≡ 8.0E+15 |
4 | ≡ 4.0E+15 | 9 | ≡ 9.0E+15 |
5 | ≡ 5.0E+15 | 10 | ≡ 1.0E+16 |
femtobarns | barns |
---|---|
1 | ≡ 1.0 × 10-15 |
1.0 × 1015 | ≡ 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 …) |