共查询到20条相似文献,搜索用时 15 毫秒
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Jiang Zezhou 《物理与工程》1998,(2)
根据角动量的定义,结合图形,分析和讨论角动量计算中各项以及各量的深刻意义,建立角动量的物理图象.明确对点的角动量和对轴的角动量的关系. 相似文献
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A MICROSCOPIC ANALYSIS OF THE DIFFERENCE IN ANGULAR MOMENTUM BETWEEN EXCITED AND GROUND BANDS 下载免费PDF全文
ZHANG Jing-Ye 《中国物理C(英文版)》1984,8(3):346-351
An analysis for various components included in the difference of angular momentum between excited and ground bands, i(ω), is done carefully. It is pointed out that, generally, i(ω) should read as i(ω)=iRAL(ω)+iPR(ω)+iSC(ω). And the i(ω). corresponding to s-band of the first backbanding in even-even nuclei is really not only the iRAL(ω). The various components in i(ω) corresponding to s-band for three typical nuclei 164Er, 188Hg and 156Er are estimated quantitatively and microscopicly by using cranked shell model. For well deformed nuclei, iRAL plays the dominant role, but the contribution of pairing reduction, iPR, can not be neglected. As for the soft nuclei like 188Hg, the contribution from shape changes, iSC, is very important. While for transitional nuclei as 156Er, both pairing reduction and shape changes will play substantial role. 相似文献
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THE CONTRIBUTION OF THE NUCLEON EXCHANGE TO THE TRANSFER OF IN DEEP ANGULAR MOMENTUM AND ENERGY INELASTIC COLLISION 下载免费PDF全文
The nucleon exchange can be divided into two different modes, the equal one and unequal one. Assuming that the motion of nucleon is random and according to Einstein relation the number of equal and unequal exchange is discussed. The total energy loss and the angular momentum for the reaction Kr+Kr have been calculated. The results. show that the total energy loss is only partly induced by nucleon exchange, while the. angular momentum dissipation is mainly induced by nucleon exchange and the equal exchange is more important than unequal one in both cases. 相似文献
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关于动量矩定理的矩心选取问题已经讨论了几十年[1,2,8,4]。本文给出动量矩定理的统一形式。特别是导出了相对于速度瞬心的动量矩定理。在一般情况下它被认为是不可行的,然而我们用此定理解决了一个例题。该例通常被认为是相对于速度瞬心的动量矩定理不成立的有力证据。 相似文献
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利用SU(2)李代数讨论了原子相干态中角动量的二阶、四阶和六阶涨落,并在高阶不确定关系基础上提出了角动量高阶压缩的定义.研究了原子相干态中角动量涨落的二阶、四阶和六阶压缩情况.运用这里的定义和方法可进一步研究更高阶的压缩情况,从而把高阶压缩推广到原子算符的涨落上.
关键词:
原子相干态
Bloch态
SU(2)压缩 相似文献
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阐述在刚体的定点转动中,引入"自然坐标系"来分析,往往可以使问题变得更加简单,物理意义变得更加清晰,并且通过具体实例加以验证,最后通过对刚体定轴转动的分析,把刚体定轴转动的角动量定理与定点的角动量定理统一起来. 相似文献
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The properties of fermion causal Green's function is discussed according to the theory of spectral representation. The definition of effective mass is established from the view point of field theory, and the approximate expression of SF' (p) as |p2|«M2 and the asymptotic formula of SF' (p) as p2→+∞ is given. In terms of these result the problem of quark confinement is discussed. We find that: (ⅰ) Based on the theory of spectral re presentation the concept of relative confinement is allowed, and if renormalization effect is strong, the quarks can demonstrate definitely lighter effective mass when they are far away from the mass shell; (ⅱ) Based on the theory of spectral representation the concept of absolute confinement is unallowable, even the absolute confinement is taken as the limit of relative confinement. That is if the concept of absolute confinement is introduced, we must discard a part of elementary hypothesis of spectral representation theory. 相似文献
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The role of the non-diagonal difusion coefficient D12 of the two dimensional F-P EQ. In the mean value of angular momentum of fragments, their varaince and covaraince are discussed. It is found that D12 doesnot influence the equilibrium value of the quantities, but influences the rate for the quantities to reach equilibrium. So that it mainly influences the angular momentum transfer at the beginning of the reaction and that of large incident angular momentum partial waves. We also find that the covaraince is especially sensitive to D12. 相似文献
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APPLICATIONS OF THE MODIFIED SURFACE DELTA INTERACTION IN THE ANGULAR MOMENTUM PROJECTION DEFORMED HAREE-FOCK METHOD 下载免费PDF全文
LIAO Ji-Zhi 《中国物理C(英文版)》1989,13(4):357-361
In this paper a modified surface delta interaction with an angular momentum correction term is proposed.By using this interaction the deformed Hartree-Fock and the approximate angular momentum projection calculations are performed for even-even nuclei in mass region A=56—74.The single particle energy spectra of the ground state configurations obtained are more reasonable than that calculated with KB matrix elements.The agreement of the calculated binding energies and projection energy spectra with experimental ones is fairly good. 相似文献
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本文用Sawyer的“最奇异项求和”方法来处理π-N散射问题。我们发现,在角动量复平面内,领先奇异性是平方根型的固定割线。这样就给出交叉道的高能行为。 相似文献
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研究有旋非相对论性电子在相互垂直的均匀电磁场及二维谐振子场中运动的量子单波及量子双波描述.
关键词:
双波描述
有旋电子
电磁场
谐振子场 相似文献