放射性核素衰變表格

1、1 .放射性核素衰變表3H35S32P125 i131 i1時間（年）剩余活性（%）時間（年）剩余活性（%）時間（年）剩余活性（%）時間（年）剩余活性（%）時間（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 .放射性測定單位單位定義換算吸收放射線劑量（拉得 rad ）100爾格/克（電離輻射傳給單位質(zhì)量物質(zhì) 的能量）0.87rad=1r倫琴（r）使1克空氣產(chǎn)生1.6X1012離子對的

3、X或T-射線的照射劑量r/0.87=1rad居里（Ci）每秒放射性衰變3.7X10 10個原子的量1Ci=103mCi=1。gCi毫居（mCi）千分之一居里1mCi=10_3Ci=103gCi微居（g Ci）百萬分之一居里（每分鐘衰變2.2X10 6次）1 gCi=10 -6Ci=10-3MCi伯克萊爾（Bq）每秒衰變1個原子的量1Bq=3.7X10 -10Ci千伯克萊爾（kBq）31kBq=10 Bq百萬伯克萊爾（MBq1MBq=10Bq兆伯克萊爾（GB。1GBq=10Bq每分鐘衰變數(shù)（dpm每分鐘衰變的原子數(shù)2.2 X106dpm=M Ci每分鐘計數(shù)（cpm）測量儀測出每分鐘B粒子數(shù)Cpm

4、=dp m計數(shù)器效率、原子量符號原子序數(shù)原子量舸(actinium )Ac89227.02鋁(aluminium )Al1326.98胃(americium )Am95(243)錦(antimony )Sb51121.75瀛(argon)Ar1839.94碑(arsenic )As3374.92碳(astatine )At85(210)鋼(barium )Ba56137.33錯(berkelium )Bk97(247)鉞(beryllium )Be49.01砌(bismuth )Bi83208.98硼(boron)B510.81溟(bromine )Br3579.90鎘(cadmium)Cd4

5、8112.41鈣(calcium )Ca2040.08銅(californium )Cf98(251)碳(carbon )C612.01苗(cerium )Ce58140.12葩(cesium)Cs55132.90氯(chlorine )Cl1735.45銘(chromium)Cr2451.99鉆(cobalt )Co2758.93銅(copper)Cu2963.54銅(curium )Cm96(247)鋪(dysprosium )Dy66162.50鍍(einsteinium )Es99(252)銀(erbium )Er68167.26第(euroqium )Eu63151.96鑲(ferm

6、ium )Fm100(257)氟(fluorine )F918.99舫(francium )Fr87(223)軋(gadolinium )Gd64157.52錢(galium )Ga3169.72楮(germanium)Ge3272.59金(gold )Au79196.96錯(hafnium )Hf72178.49氮(helium )He24.00欽(holmium)Ho67164.93氫(hydrogen )H11.00錮(indium )In49114.82碘(iodine )I53126.90鉞(iridium )Ir77192.22 .一. 1鐵(iron )Fe26155.84氟(k

7、rypton )Kr3683.80鐲(lanthanum )La57139.90鎊(Lawrencium)Lr103(260)鉛(lead )Pb82207.2鋰(lithium )Li36.94鐳(lutetium )Lu71174.96鎂(Magnesium)Mg1224.30鎰(manganse)Mn2554.93鎮(zhèn)1 ( mendelevium )Md101(258)汞(molybdenum!)Hg80200.59旬(molybdenum!)Mo4295.94鉉(neodymium)Nd60144.24短(neon)Ne1020.17鋒(neptunium )Np93237.04銀(n

8、ickel )Ni2858.69鋁(niobium )Nb4192.00氮(nitrogen )N714.00錯(nobelium )No102(259)鉞(osmium)Os76190.2氧(oxygen)O815.99專巴(palladium )Pd46106.42磷(phosphorus )P1530.94鉗 P platium )Pt78195.08缽(piutonium )Pu94(244)針(polonium )Po84(209)車甲(potassium )K1939.09錯(praseodymium)Pr59140.90車巨(promethium )Pm61(145)鎂(prot

9、actinium )Pa91231.03鐳(radium )Ra88226.02氨(radon)Rn86(222)銖(rhenium )Re75186.20銬(rhodium )Rh45102.90 .一. 1鋤(rubidium )Rb37185.46釘(ruthenium )Ru44101.07鈔(samarium)Sm62150.36銃(scandium)Sc2144.95硒(sillicon )Se3478.96硅(sillicon )Si1428.08銀(sliver )Ag47107.86鈉(sodium)Na1122.98后思(strontium )Sr3887.62硫(sulf

10、ur )S1632.06鋰 t tantalum )Ta73180.94得(technetium )Tc43(98)析 t tellurium )Te52127.60鉞(terbium )Tb65158.92專它 t thallium )Tl81204.38牡(thorium )Th90232.03錫(tin )Sn50118.69錢 t thulium )Tm69168.93鈦 t titanium )Ti2247.88鴇 t tungsten )W74183.85unhilhexium(Unh)106(263)unnilpentium(Unp)105(262)unnilquadium(Unq)104(261)unnilseptium（Uns）107（262）鈾（u