放射性核素衰变表.doc

1放射性核素衰变表3H35S32P125I131I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(%)194.5298.4195.3495.50.298.3289.3596.1290.8891.20.496.6384.41092.3386.51287.10.695.0479.81588.7482.51683.11.091.8575.42085.3578.52079.41.687.2671.32582.0674.82475.82.381.2767.43178.1771.22872.43.176.7863.73774.5867.83269.14.071.0960.24371.0964.73666.05.065.21056.95067.01061.24063.06.159.31153.85763.61158.74460.27.353.41250.96559.61255.94857.48.150.012.350.07356.01353.25254.88152.51450.75652.487.150.014.350.06050.02.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1.61012离子对的X或-射线的照射剂量r/0.87=1rad居里（Ci）每秒放射性衰变3.71010个原子的量1Ci=103mCi=106Ci毫居（mCi）千分之一居里1mCi=10-3Ci=103Ci微居（Ci）百万分之一居里（每分钟衰变2.2106次）1Ci=10-6Ci=10-3MCi伯克莱尔（Bq）每秒衰变1个原子的量1Bq=3.710-10Ci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2.2106dpm=1Ci每分钟计数（cpm）测量仪测出每分钟粒子数Cpm=dpm计数器效率十一、原子量符号原子序数原子量锕（actinium）Ac89227.02铝（aluminium）Al1326.98镅（americium）Am95(243)锑（antimony）Sb51121.75氩（argon）Ar1839.94砷（arsenic）As3374.92砹（astatine）At85(210)钡（barium）Ba56137.33锫（berkelium）Bk97(247)铍（beryllium）Be49.01铋（bismuth）Bi83208.98硼（boron）B510.81溴（bromine）Br3579.90镉（cadmium）Cd48112.41钙（calcium）Ca2040.08锎（californium）Cf98(251)碳（carbon）C612.01铈（cerium）Ce58140.12铯（cesium）Cs55132.90氯（chlorine）Cl1735.45铬（chromium）Cr2451.99钴（cobalt）Co2758.93铜（copper）Cu2963.54锔（curium）Cm96(247)镝（dysprosium）Dy66162.50锿（einsteinium）Es99(252)铒（erbium）Er68167.26铕（euroqium）Eu63151.96镄（fermium）Fm100(257)氟（fluorine）F918.99钫（francium）Fr87(223)钆（gadolinium）Gd64157.52镓（galium）Ga3169.72锗（germanium）Ge3272.59金（gold）Au79196.96铪（hafnium）Hf72178.49氦（helium）He24.00钬（holmium）Ho67164.93氢（hydrogen）H11.00铟（indium）In49114.82碘（iodine）I53126.90铱（iridium）Ir77192.22铁（iron）Fe2655.84氪（krypton）Kr3683.80镧（lanthanum）La57139.90铹（Lawrencium）Lr103(260)铅（lead）Pb82207.2锂（lithium）Li36.94镥（lutetium）Lu71174.96镁（Magnesium）Mg1224.30锰（manganse）Mn2554.93钔（mendelevium）Md101(258)汞（molybdenum）Hg80200.59钼（molybdenum）Mo4295.94钕（neodymium）Nd60144.24氖（neon）Ne1020.17镎（neptunium）Np93237.04镍（nickel）Ni2858.69铌（niobium）Nb4192.00氮（nitrogen）N714.00锘（nobelium）No102(259)锇（osmium）Os76190.2氧（oxygen）O815.99钯（palladium）Pd46106.42磷（phosphorus）P1530.94铂（platium）Pt78195.08钚（piutonium）Pu94(244)钋（polonium）Po84(209)钾（potassium）K1939.09镨（praseodymium）Pr59140.90钜（promethium）Pm61(145)镤（protactinium）Pa91231.03镭（radium）Ra88226.02氡（radon）Rn86(222)铼（rhenium）Re75186.20铑（rhodium）Rh45102.90铷（rubidium）Rb3785.46钌（ruthenium）Ru44101.07钐（samarium）Sm62150.36钪（scandium）Sc2144.95硒（sillicon）Se3478.96硅（sillicon）Si1428.08银（sliver）Ag47107.86钠（sodium）Na1122.98锶（strontium）Sr3887.62硫（sulfur）S1632.06钽（tantalum）Ta73180.94锝（technetium）Tc43(98)碲（tellurium）Te52127.60铽（terbium）Tb65158.92铊（thallium）Tl81204.38钍（thorium）Th90232.03锡（tin）Sn50118.69铥（thulium）Tm69168.93钛（titanium）Ti2247.88钨（tungsten）W74183.85unhilhexium(Unh)106(263)unnilpentium(Unp)105(262)unnilquadium(Unq)104(261)unnilseptium(Uns)107(262)铀（ur