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NUPDOWN ¾ÍÊÇ spin up ¸ú spin down Ö®ëŠ×ӵIJî
NUPDOWN = 0 -> S=0,    2S+1 = 1 = SINGLET
NUPDOWN = 1 -> S=1/2, 2S+1 = 2 = DOUBLET
NUPDOWN = 2 -> S=1,    2S+1 = 3 = TRIPLET

[ Last edited by jpchou on 2014-3-14 at 21:35 ]

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