放射性核素衰变表格

1、1 .放射性核素衰变表3H35S32P125 i131 i1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（%）194.5298.4195.3495.50.298.3289.3596.1290.8891.20.496.6384.41092.3386.51287.10.695.0479.81588.7482.51683.11.091.8575.42085.3578.52079.41.687.2671.32582.0674.82475.82.381.2767.43178.1771.22872.43.176.7863.73774.5

2、867.83269.14.071.0960.24371.0964.73666.05.065.21056.95067.01061.24063.06.159.31153.85763.61158.74460.27.353.41250.96559.61255.94857.48.150.012.350.07356.01353.25254.88152.51450.75652.4187.150.014.350.06050.01J2 .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1.6X1012离子对的

3、X或T-射线的照射剂量r/0.87=1rad居里（Ci）每秒放射性衰变3.7X10 10个原子的量1Ci=103mCi=1。gCi毫居（mCi）千分之一居里1mCi=10_3Ci=103gCi微居（g Ci）百万分之一居里（每分钟衰变2.2X10 6次）1 gCi=10 -6Ci=10-3MCi伯克莱尔（Bq）每秒衰变1个原子的量1Bq=3.7X10 -10Ci千伯克莱尔（kBq）31kBq=10 Bq百万伯克莱尔（MBq1MBq=10Bq兆伯克莱尔（GB。1GBq=10Bq每分钟衰变数（dpm每分钟衰变的原子数2.2 X106dpm=M Ci每分钟计数（cpm）测量仪测出每分钟B粒子数Cpm

4、=dp m计数器效率、原子量符号原子序数原子量舸(actinium )Ac89227.02铝(aluminium )Al1326.98胃(americium )Am95(243)锦(antimony )Sb51121.75瀛(argon)Ar1839.94碑(arsenic )As3374.92碳(astatine )At85(210)钢(barium )Ba56137.33错(berkelium )Bk97(247)钺(beryllium )Be49.01砌(bismuth )Bi83208.98硼(boron)B510.81溟(bromine )Br3579.90镉(cadmium)Cd4

5、8112.41钙(calcium )Ca2040.08铜(californium )Cf98(251)碳(carbon )C612.01苗(cerium )Ce58140.12葩(cesium)Cs55132.90氯(chlorine )Cl1735.45铭(chromium)Cr2451.99钻(cobalt )Co2758.93铜(copper)Cu2963.54铜(curium )Cm96(247)铺(dysprosium )Dy66162.50镀(einsteinium )Es99(252)银(erbium )Er68167.26第(euroqium )Eu63151.96镶(ferm

6、ium )Fm100(257)氟(fluorine )F918.99舫(francium )Fr87(223)轧(gadolinium )Gd64157.52钱(galium )Ga3169.72楮(germanium)Ge3272.59金(gold )Au79196.96错(hafnium )Hf72178.49氮(helium )He24.00钦(holmium)Ho67164.93氢(hydrogen )H11.00锢(indium )In49114.82碘(iodine )I53126.90钺(iridium )Ir77192.22 .一. 1铁(iron )Fe26155.84氟(k

7、rypton )Kr3683.80镯(lanthanum )La57139.90镑(Lawrencium)Lr103(260)铅(lead )Pb82207.2锂(lithium )Li36.94镭(lutetium )Lu71174.96镁(Magnesium)Mg1224.30镒(manganse)Mn2554.93镇1 ( mendelevium )Md101(258)汞(molybdenum!)Hg80200.59旬(molybdenum!)Mo4295.94铉(neodymium)Nd60144.24短(neon)Ne1020.17锋(neptunium )Np93237.04银(n

8、ickel )Ni2858.69铝(niobium )Nb4192.00氮(nitrogen )N714.00错(nobelium )No102(259)钺(osmium)Os76190.2氧(oxygen)O815.99专巴(palladium )Pd46106.42磷(phosphorus )P1530.94钳 P platium )Pt78195.08钵(piutonium )Pu94(244)针(polonium )Po84(209)车甲(potassium )K1939.09错(praseodymium)Pr59140.90车巨(promethium )Pm61(145)镁(prot

9、actinium )Pa91231.03镭(radium )Ra88226.02氨(radon)Rn86(222)铢(rhenium )Re75186.20铐(rhodium )Rh45102.90 .一. 1锄(rubidium )Rb37185.46钉(ruthenium )Ru44101.07钞(samarium)Sm62150.36铳(scandium)Sc2144.95硒(sillicon )Se3478.96硅(sillicon )Si1428.08银(sliver )Ag47107.86钠(sodium)Na1122.98后思(strontium )Sr3887.62硫(sulf

10、ur )S1632.06锂 t tantalum )Ta73180.94得(technetium )Tc43(98)析 t tellurium )Te52127.60钺(terbium )Tb65158.92专它 t thallium )Tl81204.38牡(thorium )Th90232.03锡(tin )Sn50118.69钱 t thulium )Tm69168.93钛 t titanium )Ti2247.88鸨 t tungsten )W74183.85unhilhexium(Unh)106(263)unnilpentium(Unp)105(262)unnilquadium(Unq)104(261)unnilseptium（Uns）107（262）铀（u