| megabarn | 1 Mb | 2 Mb | 3 Mb | 4 Mb | 5 Mb | 6 Mb | 7 Mb | 8 Mb | 9 Mb | 10 Mb | 11 Mb | 12 Mb | 13 Mb | 14 Mb | 15 Mb | 16 Mb | 17 Mb | 18 Mb | 19 Mb | 20 Mb | 21 Mb | 22 Mb | 23 Mb | 24 Mb | 25 Mb | 26 Mb | 27 Mb | 28 Mb | 29 Mb | 30 Mb | 31 Mb | 32 Mb | 33 Mb | 34 Mb | 35 Mb | 36 Mb | 37 Mb | 38 Mb | 39 Mb | 40 Mb | 41 Mb | 42 Mb | 43 Mb | 44 Mb | 45 Mb | 46 Mb | 47 Mb | 48 Mb | 49 Mb | 50 Mb | 51 Mb | 52 Mb | 53 Mb | 54 Mb | 55 Mb | 56 Mb | 57 Mb | 58 Mb | 59 Mb | 60 Mb | 61 Mb | 62 Mb | 63 Mb | 64 Mb | 65 Mb | 66 Mb | 67 Mb | 68 Mb | 69 Mb | 70 Mb | 71 Mb | 72 Mb | 73 Mb | 74 Mb | 75 Mb | 76 Mb | 77 Mb | 78 Mb | 79 Mb | 80 Mb | 81 Mb | 82 Mb | 83 Mb | 84 Mb | 85 Mb | 86 Mb | 87 Mb | 88 Mb | 89 Mb | 90 Mb | 91 Mb | 92 Mb | 93 Mb | 94 Mb | 95 Mb | 96 Mb | 97 Mb | 98 Mb | 99 Mb | 100 Mb |
| barn | 1 000 000 b | 2 000 000 b | 3 000 000 b | 4 000 000 b | 5 000 000 b | 6 000 000 b | 7 000 000 b | 8 000 000 b | 9 000 000 b | 10 000 000 b | 11 000 000 b | 12 000 000 b | 13 000 000 b | 14 000 000 b | 15 000 000 b | 16 000 000 b | 17 000 000 b | 18 000 000 b | 19 000 000 b | 20 000 000 b | 21 000 000 b | 22 000 000 b | 23 000 000 b | 24 000 000 b | 25 000 000 b | 26 000 000 b | 27 000 000 b | 28 000 000 b | 29 000 000 b | 30 000 000 b | 31 000 000 b | 32 000 000 b | 33 000 000 b | 34 000 000 b | 35 000 000 b | 36 000 000 b | 37 000 000 b | 38 000 000 b | 39 000 000 b | 40 000 000 b | 41 000 000 b | 42 000 000 b | 43 000 000 b | 44 000 000 b | 45 000 000 b | 46 000 000 b | 47 000 000 b | 48 000 000 b | 49 000 000 b | 50 000 000 b | 51 000 000 b | 52 000 000 b | 53 000 000 b | 54 000 000 b | 55 000 000 b | 56 000 000 b | 57 000 000 b | 58 000 000 b | 59 000 000 b | 60 000 000 b | 61 000 000 b | 62 000 000 b | 63 000 000 b | 64 000 000 b | 65 000 000 b | 66 000 000 b | 67 000 000 b | 68 000 000 b | 69 000 000 b | 70 000 000 b | 71 000 000 b | 72 000 000 b | 73 000 000 b | 74 000 000 b | 75 000 000 b | 76 000 000 b | 77 000 000 b | 78 000 000 b | 79 000 000 b | 80 000 000 b | 81 000 000 b | 82 000 000 b | 83 000 000 b | 84 000 000 b | 85 000 000 b | 86 000 000 b | 87 000 000 b | 88 000 000 b | 89 000 000 b | 90 000 000 b | 91 000 000 b | 92 000 000 b | 93 000 000 b | 94 000 000 b | 95 000 000 b | 96 000 000 b | 97 000 000 b | 98 000 000 b | 99 000 000 b | 100 000 000 b |
A megabarn (symbol: Mb) is a unit of area equal to 10−22 m2.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| megabarn | Mb | ≡ 10−22 m2 | ≡ 10−22 m2 | Nuclear Physics |
| megabarns | barns | megabarns | barns |
|---|---|---|---|
| 1 | ≡ 1000000 | 6 | ≡ 6000000 |
| 2 | ≡ 2000000 | 7 | ≡ 7000000 |
| 3 | ≡ 3000000 | 8 | ≡ 8000000 |
| 4 | ≡ 4000000 | 9 | ≡ 9000000 |
| 5 | ≡ 5000000 | 10 | ≡ 10000000 |
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 | megabarns | barns | megabarns |
|---|---|---|---|
| 1 | ≡ 1.0E-6 | 6 | ≡ 6.0E-6 |
| 2 | ≡ 2.0E-6 | 7 | ≡ 7.0E-6 |
| 3 | ≡ 3.0E-6 | 8 | ≡ 8.0E-6 |
| 4 | ≡ 4.0E-6 | 9 | ≡ 9.0E-6 |
| 5 | ≡ 5.0E-6 | 10 | ≡ 1.0E-5 |
| megabarns | barns |
|---|---|
| 1 | ≡ 1 000 000 |
| 1.0 × 10-6 | ≡ 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 …) |