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PHYS 402 -
NIST Atomic Spectra Database Levels Data
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NIST Atomic Spectra Database Levels DataSome data for neutral and singly-charged ions are available in the Handbook of Basic Atomic Spectroscopic DataHe Spectrumhttp://physics.nist.gov/PhysRefData/ASD/levels_form.htmlPoodd parityΨ(-r)=-Ψ(r)Configuration Term J Level(eV)1s2 1S 00.01s2s3S 119.81961341s2s1S 020.61577361s2p3P° 220.9640857120.9640951020.96421761s2p1P° 121.21802141s3s3S122 718465121SSSrrr+=21LLLrrr+=SLJrrr+=0,0,0===JLS1,0,1=== JLS2,1,0,1,1=== JLSS=1 lower energy(space
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