Sm原子激發(fā)態(tài)光譜的研究.pdf

1、天津理工大學碩士學位論文Sm原子激發(fā)態(tài)光譜的研究姓名：關(guān)鋒申請學位級別：碩士專業(yè)：凝聚態(tài)物理指導教師：戴長建20080601AbstractThestudyonexcitedstatesofrare。earthatomisnotonlyimportantforunderstandingtheatomicstructuresandtheirproperties，butalsohelpfultotherelatedscientificand

2、technicalpurposes，suchasthedevelopmentofnovellaserandprojcotoflaserisotopeseparationTheSmatomisatypicalatom，whosespectraofexcitedstatesaremostcomplexandworthfulInthisthesis，bothspectraoftheodd—parityandevenparityofexcite

3、dstatesofSmatomalestudiedsystematicallyTheexperimentaldataareanalyzed、析tIltheoryofquantummechnicsOntheexperimentalside，wehavemeasuredmanyexcitedstateswithtwodifferentparitiesForthestateswithoddparitythewavelengthofthefir

4、stlaseristunedtoexciteallSmatomfromthe4t66s川FJ(J=06)statestomanyatomicstateswithdifferentelectronicconfigurationssuchas4f66s6pand4f55d6s2nleatomsintheseexcitedstateswithoddparityarethendetectedsensitively、而thphotoionizat

5、ionusinganultravioletlaserwithwavelengthof355nmForthestates、啊meven—parityalladditionalphotonmustbeusedNamelytheatomsintheoddparitystatesmentionedaboveareexcitedfurtherbythesecondlaserwhosewavelengthisscannedTheseSmatomsi

6、ninthehigh—lyingevenparitystatesaleprobedbyabsorbinganotherphotonfromthesecondlaserthatplaysaroleofatwostepphotoexcitationandphotoionizationInanotherwords，theinnovationofthisexperimentisclearlydemonstratedincombiningdiff

7、erentexcitationschemesManymeasurements、^，itlldifferentexcitationschemesarecardedoutSO∞toobtaindifferentsortsofinformationontheexcitedstatesoftheSmatomOnthetheoreticalside，wehaveperformedananalysisonthespectraldatausingth

8、econceptsofquantummechnics，suchasspectrallineintensityandselectionrulesofthedipoletransitionsonparityanddifferentangularmomentaBasedontheaccuracyofwavelengthcalibrationonthescanninglasers，wehaveidentifiedmanyexcitedstate

9、softheSmatomsaccordingtotheirwavelengthsoftransitionsInSOmecases，wealSOhavetocalculatetherelativeintensitiesofspectrallinestodeterminethequantumnumbersofthegivenstatesAgreementbetweenthetheoryandexperimentisachievedinmos

10、tcasesAboveall，麗madetailedanalysisontheexperimentaldatawenotonlyconfnTnsomelowlyingenergylevelsoftheSmatomreportedinliterature，butalsoreportmanynewspectraldatawhichenrichtheinformationofSinatomsignificantlyKeywords：Spect