Decay constants in geochronology-中国Betway体育网页登陆

摘要 GeologictimeisfundamentaltotheEarthSciences,andprogressinmanydisciplinesdependscriticallyonourabilitytomeasuretimewithincreasingaccuracyandprecision.Isotopicgeochronologymakesuseofthedecayofradioactivenuclidesasahelptoquantifythehistoriesofrock,minerals,andothermaterials.Bothaccuracyandprecisionofradioisotopicagesare,atpresent,limitedbythoseofradioactivedecayconstants.Modemmassspectrometerscanmeasureisotoperatioswithaprecisionof10-4orbetter.Ontheotherhand,theuncertaintiesassociatedwithdirecthalf-lifedeterminationsare,inmostcases,stillatthepercentlevel.ThepresentshortnotebrieflysummarizesprogressandproblemsthathavebeenencounteredduringtheWorkingGroup'sactivity.

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Decay constants in geochronology

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