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muzhongfei

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[交流] 【求助】懂电子顺磁共振 EPR的请进来,请教问题 已有3人参与

摘要一段
Electron paramagnetic resonance measurements have been made at 17.4 GHz at room and liquid helium temperatures of divalent manganese substituted into the three sites of yttrium aluminium garnet (YAlG). The relative intensities of the tetrahedral, octahedral, and dodecahedral spectra were respectively 3:2:30.

Data at liquid helium temperatures in units of 10-4 cm-1 are for tetrahedral site: gz = 2.001, B  = -170.6, B  = 0.062, Az = -69.1; for octahedral site: gz = 2.001, B  = -139.3, B  = -0.088, Az = -82.3; for dodecahedral site: gz = gy = 2.001, B  = -102.2, B22 = -167.8, B  = -0.006, (B  + B ) = 0.11, Az = -85.1, Ay = -85.9. The second order zero field splittings were compared to the various existing crystal field models using the local crystalline fields at the three sites obtained by summing up the contributions of the point monopoles to convergence. Poor agreement was obtained.

请问,第一段里,在四面体,八面体,十二面体光谱的相对强度分别是3:2:20,是不是可以理解为分布于三种格位上的二价锰离子的数目之比为3:2:20??
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muzhongfei@gdut.edu.cn
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夕阳西下

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muzhongfei(金币+1): 2010-06-15 19:59:33
谱线的相对强度与光强有关还与所测样品的含量有关。如果光强一定,应该与粒子数成正比吧。
3楼2010-06-13 08:35:42
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shq.l

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muzhongfei(金币+1):谢谢交流! 2010-06-12 19:38:24
不可以吧,由于化学效应,谱位置应该有差别,不同谱位置的强度不具有可比性
2楼2010-06-12 19:10:36
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