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LI ZI-PING 《中国物理C(英文版)》1981,5(3):372-373
According to SU(3) and the L-excitation Quark model, the Gs parity of strange mesons are evaluated. Suppose V-spin conservation, some selection rules in strong decay of resonance state of strange mesons are discussed. 相似文献
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用双探头符合系统测量了金属Fe、Co、Ni、Al、Nb、Cu、Ti和NiTi合金的多普勒展宽谱,计算了其S参数和W参数,分析了合金中d-d金属键的作用.结果表明,当用Fe、Co或Al原子加入NiTi合金时,都将使合金中参与形成d-d金属键的d电子减少,从而使金属键减弱;而用Cu或Nb原子加入NiTi合金时,对合金中d-d电子作用的影响很小,合金中共价键的成分变化不大.在NiTi合金中加入合金化元素可以改变其电子结构,进而影响Ms点. 相似文献
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The nature of the medium lifetime component of positron annihilation in Teflon (PTFE) polymer has been investigated by using a recently developed time-selecting γ ray energy spectro-meter with and without magnetic field.It has been assigned to o-Ps quenching annihilation too,just like the case of the longest lifetime component. 相似文献
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银表面-分子体系紫外-可见光谱的研究 总被引:1,自引:0,他引:1
本文观察了加入KCl对银胶,呲啶-银胶、以及苯甲酸-银胶三种体系的紫外-可见光谱的影响。结果表明Cl~-离子对上述三种体系的影响有很大差异,对此进行了讨论。 相似文献
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It is shown that there exist connections in some of the present gauge theories andthe theory which can provide a mass to the gauge particle without the usual sponta-neous symmetry breaking. 相似文献
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Measurements were performed using the positron annihilation technique associated with physical metallurgical techniques for several engineering alloys containing fine precipitates. It is shown that positron annihilation is an effective method to detect fine precipitates, providing a sound basis for a further intense research of these. 相似文献
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