放射性核素数据
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1、放射性核素衰变表
| 3H | 35S | 32P | 125I | 131I | |||||
| 时间(年) | 剩余活性(%) | 时间(年) | 剩余活性(%) | 时间(年) | 剩余活性(%) | 时间(年) | 剩余活性(%) | 时间(年) | 剩余活性(%) | 
| 1 | 94.5 | 2 | 98.4 | 1 | 95.3 | 4 | 95.5 | 0.2 | 98.3 | 
| 2 | 89.3 | 5 | 96.1 | 2 | 90.8 | 8 | 91.2 | 0.4 | 96.6 | 
| 3 | 84.4 | 10 | 92.3 | 3 | 86.5 | 12 | 87.1 | 0.6 | 95.0 | 
| 4 | 79.8 | 15 | 88.7 | 4 | 82.5 | 16 | 83.1 | 1.0 | 91.8 | 
| 5 | 75.4 | 20 | 85.3 | 5 | 78.5 | 20 | 79.4 | 1.6 | 87.2 | 
| 6 | 71.3 | 25 | 82.0 | 6 | 74.8 | 24 | 75.8 | 2.3 | 81.2 | 
| 7 | 67.4 | 31 | 78.1 | 7 | 71.2 | 28 | 72.4 | 3.1 | 76.7 | 
| 8 | 63.7 | 37 | 74.5 | 8 | 67.8 | 32 | 69.1 | 4.0 | 71.0 | 
| 9 | 60.2 | 43 | 71.0 | 9 | 64.7 | 36 | 66.0 | 5.0 | 65.2 | 
| 10 | 56.9 | 50 | 67.0 | 10 | 61.2 | 40 | 63.0 | 6.1 | 59.3 | 
| 11 | 53.8 | 57 | 63.6 | 11 | 58.7 | 44 | 60.2 | 7.3 | 53.4 | 
| 12 | 50.9 | 65 | 59.6 | 12 | 55.9 | 48 | 57.4 | 8.1 | 50.0 | 
| 12.3 | 50.0 | 73 | 56.0 | 13 | 53.2 | 52 | 54.8 | ||
| 81 | 52.5 | 14 | 50.7 | 56 | 52.4 | ||||
| 87.1 | 50.0 | 14.3 | 50.0 | 60 | 50.0 | 
2、放射性测定单位
| 单位 | 定义 | 换算 | 
| 吸收放射线剂量(拉得rad) | 100尔格/克(电离辐射传给单位质量物质的能量) | 0.87rad=1r | 
| 伦琴(r) | 使1克空气产生1.6×1012离子对的X或γ-射线的照射剂量 | r/0.87=1rad | 
| 居里(Ci) | 每秒放射性衰变3.7×1010个原子的量 | 1Ci=103mCi=106μCi | 
| 毫居(mCi) | 千分之一居里 | 1mCi=10-3Ci=103μCi | 
| 微居(μCi) | 百万分之一居里(每分钟衰变2.2×106次) | 1μCi=10-6Ci=10-3MCi | 
| 伯克莱尔(Bq) | 每秒衰变1个原子的量 | 1Bq=3.7×10-10Ci | 
| 千伯克莱尔(kBq) | 1kBq=103Bq | |
| 百万伯克莱尔(MBq) | 1MBq=106Bq | |
| 兆伯克莱尔(GBq) | 1GBq=109Bq | |
| 每分钟衰变数(dpm) | 每分钟衰变的原子数 | 2.2×106dpm=1μCi | 
| 每分钟计数(cpm) | 测量仪测出每分钟β粒子数 | Cpm=dpm×计数器效率 | 
3、原子量
| 符号 | 原子序数 | 原子量 | |
| 锕(actinium) | Ac | 89 | 227.02 | 
| 铝(aluminium) | Al | 13 | 26.98 | 
| 镅(americium) | Am | 95 | (243) | 
| 锑(antimony) | Sb | 51 | 121.75 | 
| 氩(argon) | Ar | 18 | 39.94 | 
| 砷(arsenic) | As | 33 | 74.92 | 
| 砹(astatine) | At | 85 | (210) | 
| 钡(barium) | Ba | 56 | 137.33 | 
| 锫(berkelium) | Bk | 97 | (247) | 
| 铍(beryllium) | Be | 4 | 9.01 | 
| 铋(bismuth) | Bi | 83 | 208.98 | 
| 硼(boron) | B | 5 | 10.81 | 
| 溴(bromine) | Br | 35 | 79.90 | 
| 镉(cadmium) | Cd | 48 | 112.41 | 
| 钙(calcium) | Ca | 20 | 40.08 | 
| 锎(californium) | Cf | 98 | (251) | 
| 碳(carbon) | C | 6 | 12.01 | 
| 铈(cerium) | Ce | 58 | 140.12 | 
| 铯(cesium) | Cs | 55 | 132.90 | 
| 氯(chlorine) | Cl | 17 | 35.45 | 
| 铬(chromium) | Cr | 24 | 51.99 | 
| 钴(cobalt) | Co | 27 | 58.93 | 
| 铜(copper) | Cu | 29 | 63.54 | 
| 锔(curium) | Cm | 96 | (247) | 
| 镝(dysprosium) | Dy | 66 | 162.50 | 
| 锿(einsteinium) | Es | 99 | (252) | 
| 铒(erbium) | Er | 68 | 167.26 | 
| 铕(euroqium) | Eu | 63 | 151.96 | 
| 镄(fermium) | Fm | 100 | (257) | 
| 氟(fluorine) | F | 9 | 18.99 | 
| 钫(francium) | Fr | 87 | (223) | 
| 钆(gadolinium) | Gd | 64 | 157.52 | 
| 镓(galium) | Ga | 31 | 69.72 | 
| 锗(germanium) | Ge | 32 | 72.59 | 
| 金(gold) | Au | 79 | 196.96 | 
| 铪(hafnium) | Hf | 72 | 178.49 | 
| 氦(helium) | He | 2 | 4.00 | 
| 钬(holmium) | Ho | 67 | 164.93 | 
| 氢(hydrogen) | H | 1 | 1.00 | 
| 铟(indium) | In | 49 | 114.82 | 
| 碘(iodine) | I | 53 | 126.90 | 
| 铱(iridium) | Ir | 77 | 192.22 | 
| 铁(iron) | Fe | 26 | 55.84 | 
| 氪(krypton) | Kr | 36 | 83.80 | 
| 镧(lanthanum) | La | 57 | 139.90 | 
| 铹(Lawrencium) | Lr | 103 | (260) | 
| 铅(lead) | Pb | 82 | 207.2 | 
| 锂(lithium) | Li | 3 | 6.94 | 
| 镥(lutetium) | Lu | 71 | 174.96 | 
| 镁(Magnesium) | Mg | 12 | 24.30 | 
| 锰(manganse) | Mn | 25 | 54.93 | 
| 钔(mendelevium) | Md | 101 | (258) | 
| 汞(molybdenum) | Hg | 80 | 200.59 | 
| 钼(molybdenum) | Mo | 42 | 95.94 | 
| 钕(neodymium) | Nd | 60 | 144.24 | 
| 氖(neon) | Ne | 10 | 20.17 | 
| 镎(neptunium) | Np | 93 | 237.04 | 
| 镍(nickel) | Ni | 28 | 58.69 | 
| 铌(niobium) | Nb | 41 | 92.00 | 
| 氮(nitrogen) | N | 7 | 14.00 | 
| 锘(nobelium) | No | 102 | (259) | 
| 锇(osmium) | Os | 76 | 190.2 | 
| 氧(oxygen) | O | 8 | 15.99 | 
| 钯(palladium) | Pd | 46 | 106.42 | 
| 磷(phosphorus) | P | 15 | 30.94 | 
| 铂(platium) | Pt | 78 | 195.08 | 
| 钚(piutonium) | Pu | 94 | (244) | 
| 钋(polonium) | Po | 84 | (209) | 
| 钾(potassium) | K | 19 | 39.09 | 
| 镨(praseodymium) | Pr | 59 | 140.90 | 
| 钜(promethium) | Pm | 61 | (145) | 
| 镤(protactinium) | Pa | 91 | 231.03 | 
| 镭(radium) | Ra | 88 | 226.02 | 
| 氡(radon) | Rn | 86 | (222) | 
| 铼(rhenium) | Re | 75 | 186.20 | 
| 铑(rhodium) | Rh | 45 | 102.90 | 
| 铷(rubidium) | Rb | 37 | 85.46 | 
| 钌(ruthenium) | Ru | 44 | 101.07 | 
| 钐(samarium) | Sm | 62 | 150.36 | 
| 钪(scandium) | Sc | 21 | 44.95 | 
| 硒(sillicon) | Se | 34 | 78.96 | 
| 硅(sillicon) | Si | 14 | 28.08 | 
| 银(sliver) | Ag | 47 | 107.86 | 
| 钠(sodium) | Na | 11 | 22.98 | 
| 锶(strontium) | Sr | 38 | 87.62 | 
| 硫(sulfur) | S | 16 | 32.06 | 
| 钽(tantalum) | Ta | 73 | 180.94 | 
| 锝(technetium) | Tc | 43 | (98) | 
| 碲(tellurium) | Te | 52 | 127.60 | 
| 铽(terbium) | Tb | 65 | 158.92 | 
| 铊(thallium) | Tl | 81 | 204.38 | 
| 钍(thorium) | Th | 90 | 232.03 | 
| 锡(tin) | Sn | 50 | 118.69 | 
| 铥(thulium) | Tm | 69 | 168.93 | 
| 钛(titanium) | Ti | 22 | 47.88 | 
| 钨(tungsten) | W | 74 | 183.85 | 
| unhilhexium | (Unh) | 106 | (263) | 
| unnilpentium | (Unp) | 105 | (262) | 
| unnilquadium | (Unq) | 104 | (261) | 
| unnilseptium | (Uns) | 107 | (262) | 
| 铀(uranium) | U | 92 | 238.02 | 
| 钒(vanadium) | V | 23 | 50.94 | 
| 氙(xenon) | Xe | 54 | 131.29 | 
| 镒(ytterbium) | Yb | 70 | 173.04 | 
| 钇(yttrium) | Y | 39 | 88.90 | 
| 锌(zinc) | Zn | 30 | 65.38 | 
| 锆(zirconium) | Zn | 40 | 91.22 | 
圆括号中的数字是该元素最稳定的同位素的质量数。











