Syllabus
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Course Code: B-PHY-601 Course Name: (I) Atomic & Molecular Spectroscopy |
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| MODULE NO / UNIT | COURSE SYLLABUS CONTENTS OF MODULE | NOTES |
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| 1 | HISTORICALBACKGROUNDOFATOMICSPECTROSCOPY Introductionofearlyobservations,emissionandabsorptionspectra,atomicspectra,wave number,spectrumofHydrogenatominBalmerseries,Bohratomicmodel(Bohr’spostulates), spectraofHydrogenatom,explanationofspectralseriesinHydrogenatom,un-quantizedstates andcontinuousspectra,spectralseriesinabsorptionspectra,effectofnuclearmotiononline spectra(correctionoffinitenuclearmass),variationinRydbergconstantduetofinitemass,short comingsofBohr’stheory,Wilsonsommerfeldquantizationrule,de-Broglieinterpretationof Bohrquantization law,Bohr’s correspondingprinciple, Sommerfeld’s extensionof Bohr’smodel, Sommerfeldrelativisticcorrection,ShortcomingsofBohrSommerfeldtheory,Vectoratom model;spacequantization,electronspin,couplingoforbitalandspinangularmomentum, spectroscopictermsandtheirnotation,quantumnumbersassociatedwithvectoratommodel, transition probabilityandselection rules. |
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| 2 | VECTORATOMMODEL(SINGLEVALANCEELECTRON) Orbitalmagneticdipolemoment(Bohrmegnaton),behaviorofmagneticdipolein external magnetic filed;Larmors’ precession andtheoremPenetratingandNonpenetratingorbits,Penetratingorbitsontheclassicalmodel; Quantumdefect,spinorbitinteractionenergyofthesinglevalanceelectron,spinorbit interactionforpenetratingandnon-penetratingorbits.quantummechanicalrelativity correction,Hydrogenfinespectra,MainfeaturesofAlkaliSpectraandtheirtheoretical interpretation,termseriesandlimits,Rydeburg-Ritzecombinationprinciple,Absorption spectraofAlkaliatoms.observeddoubletfinestructureinthespectraofalkalimetals anditsInterpretation,Intensityrulesfordoublets,comparisonofAlkalispectraand Hydrogen spectrum. |
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| 3 | VECTORATOMMODEL(TWOVALANCEELECTRON) EssentialfeaturesofspectraofAlkaline-earthelements,Vectormodelfortwovalance electron atom:application of spectra. CouplingSchemes;LSorRussell– SaundersCouplingSchemeandJJcouplingscheme, InteractionenergyinLScoupling(sp,pdconfiguration),Landeintervalrule,Pauli principalandperiodicclassificationoftheelements.InteractionenergyinJJCoupling (sp,pdconfiguration),equivalentandnon-equivalentelectrons,Twovalanceelectron systemspectraltermsofnon-equivalentandequivalentelectrons,comparisonofspectral termsinL-SAndJJcoupling.Hyperfine structureofspectrallinesandits origin;isotope effect,nuclear spin. |
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| 4 | ATOMINEXTERNALFIELD ZeemanEffect(normalandAnomalous),Experimentalset-upforstudyingZeemaneffect, ExplanationofnormalZeemaneffect(classicalandquantummechanical),Explanationof anomalousZeemaneffect(Landeg-factor), ZeemanpatternofD1andD2linesofNaatom,Paschen-Backeffectofasinglevalenceelectronsystem.WeakfieldStarkeffectof Hydrogen atom. MOLECULAR PHYSICS General Considerations,Electronic StatesofDiatomic Molecules, Rotational Spectra (Far IRandMicrowaveRegion),VibrationalSpectra(IRRegion),RotatorModelofDiatomic Molecule, Raman Effect,Electronic Spectra. |
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