放射性核素衰變表.doc

1放射性核素衰變表3H35S32P125I131I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(%)194.5298.4195.3495.50.298.3289.3596.1290.8891.20.496.6384.41092.3386.51287.10.695.0479.81588.7482.51683.11.091.8575.42085.3578.52079.41.687.2671.32582.0674.82475.82.381.2767.43178.1771.22872.43.176.7863.73774.5867.83269.14.071.0960.24371.0964.73666.05.065.21056.95067.01061.24063.06.159.31153.85763.61158.74460.27.353.41250.96559.61255.94857.48.150.012.350.07356.01353.25254.88152.51450.75652.487.150.014.350.06050.02.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1.61012離子對的X或-射線的照射劑量r/0.87=1rad居里（Ci）每秒放射性衰變3.71010個原子的量1Ci=103mCi=106Ci毫居（mCi）千分之一居里1mCi=10-3Ci=103Ci微居（Ci）百萬分之一居里（每分鐘衰變2.2106次）1Ci=10-6Ci=10-3MCi伯克萊爾（Bq）每秒衰變1個原子的量1Bq=3.710-10Ci千伯克萊爾（kBq）1kBq=103Bq百萬伯克萊爾（MBq）1MBq=106Bq兆伯克萊爾（GBq）1GBq=109Bq每分鐘衰變數(shù)（dpm）每分鐘衰變的原子數(shù)2.2106dpm=1Ci每分鐘計(jì)數(shù)（cpm）測量儀測出每分鐘粒子數(shù)Cpm=dpm計(jì)數(shù)器效率十一、原子量符號原子序數(shù)原子量錒（actinium）Ac89227.02鋁（aluminium）Al1326.98镅（americium）Am95(243)銻（antimony）Sb51121.75氬（argon）Ar1839.94砷（arsenic）As3374.92砹（astatine）At85(210)鋇（barium）Ba56137.33锫（berkelium）Bk97(247)鈹（beryllium）Be49.01鉍（bismuth）Bi83208.98硼（boron）B510.81溴（bromine）Br3579.90鎘（cadmium）Cd48112.41鈣（calcium）Ca2040.08锎（californium）Cf98(251)碳（carbon）C612.01鈰（cerium）Ce58140.12銫（cesium）Cs55132.90氯（chlorine）Cl1735.45鉻（chromium）Cr2451.99鈷（cobalt）Co2758.93銅（copper）Cu2963.54鋦（curium）Cm96(247)鏑（dysprosium）Dy66162.50锿（einsteinium）Es99(252)鉺（erbium）Er68167.26銪（euroqium）Eu63151.96鐨（fermium）Fm100(257)氟（fluorine）F918.99鈁（francium）Fr87(223)釓（gadolinium）Gd64157.52鎵（galium）Ga3169.72鍺（germanium）Ge3272.59金（gold）Au79196.96鉿（hafnium）Hf72178.49氦（helium）He24.00鈥（holmium）Ho67164.93氫（hydrogen）H11.00銦（indium）In49114.82碘（iodine）I53126.90銥（iridium）Ir77192.22鐵（iron）Fe2655.84氪（krypton）Kr3683.80鑭（lanthanum）La57139.90鐒（Lawrencium）Lr103(260)鉛（lead）Pb82207.2鋰（lithium）Li36.94镥（lutetium）Lu71174.96鎂（Magnesium）Mg1224.30錳（manganse）Mn2554.93鍆（mendelevium）Md101(258)汞（molybdenum）Hg80200.59鉬（molybdenum）Mo4295.94釹（neodymium）Nd60144.24氖（neon）Ne1020.17镎（neptunium）Np93237.04鎳（nickel）Ni2858.69鈮（niobium）Nb4192.00氮（nitrogen）N714.00锘（nobelium）No102(259)鋨（osmium）Os76190.2氧（oxygen）O815.99鈀（palladium）Pd46106.42磷（phosphorus）P1530.94鉑（platium）Pt78195.08钚（piutonium）Pu94(244)釙（polonium）Po84(209)鉀（potassium）K1939.09鐠（praseodymium）Pr59140.90鉅（promethium）Pm61(145)鏷（protactinium）Pa91231.03鐳（radium）Ra88226.02氡（radon）Rn86(222)錸（rhenium）Re75186.20銠（rhodium）Rh45102.90銣（rubidium）Rb3785.46釕（ruthenium）Ru44101.07釤（samarium）Sm62150.36鈧（scandium）Sc2144.95硒（sillicon）Se3478.96硅（sillicon）Si1428.08銀（sliver）Ag47107.86鈉（sodium）Na1122.98鍶（strontium）Sr3887.62硫（sulfur）S1632.06鉭（tantalum）Ta73180.94锝（technetium）Tc43(98)碲（tellurium）Te52127.60鋱（terbium）Tb65158.92鉈（thallium）Tl81204.38釷（thorium）Th90232.03錫（tin）Sn50118.69銩（thulium）Tm69168.93鈦（titanium）Ti2247.88鎢（tungsten）W74183.85unhilhexium(Unh)106(263)unnilpentium(Unp)105(262)unnilquadium(Unq)104(261)unnilseptium(Uns)107(262)鈾（ur