[請益] about magnetic dipole

看板Physics作者 (找我下象棋吧)時間19年前 (2007/05/15 10:51), 編輯推噓4(4推 0噓 6→)
留言10則, 4人參與, 最新討論串1/1
The following is a context I've read in some electromagnetics reference book: "According to a simplified atomic model, the electrons associated with a particulatr nucleus orbit around the nucleus in circular paths while spinning about themselves. In addition, the nucleus itself has a spin motion associated with it. Since the movement of charge constitutes a current, these orbital and spin motions are equivalent to current loops of atmoic dimensions. Thus, each atom can be characterized by a superposition of magnetic dipole moments corresponding to the electron orbital motions, electron spin motions, and the nuclear spin." I can understand that orbital motion of electron could be taken as a current loop so that contribute to the magnetic dipole moment. But why could the spin motions of electron and nucleus itself also have the effects on the magnetic dipole moment? -- -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 60.248.143.57
推
05/15 16:31, , 1F
imagine a charged sphere spinning, there is an
05/15 16:31, 1F
→
05/15 16:32, , 2F
associated magnetic moment.
05/15 16:32, 2F
→
05/15 16:32, , 3F
In the case of electron/proton spin, it's really an
05/15 16:32, 3F
→
05/15 16:33, , 4F
relativistic effect.
05/15 16:33, 4F
推
05/15 17:51, , 5F
the induction of magnetic dipole moment is from the
05/15 17:51, 5F
→
05/15 17:52, , 6F
self spin of electron
05/15 17:52, 6F
推
05/15 23:08, , 7F
Regarding to the last paragraph of your article,
05/15 23:08, 7F
→
05/15 23:12, , 8F
you might consult the relativistic quantum
05/15 23:12, 8F
→
05/15 23:14, , 9F
mechanics developed by Paul Dirac.
05/15 23:14, 9F
推
05/16 09:14, , 10F
relativistic quantum mechanics? for spin of nucleus?
05/16 09:14, 10F
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