衰变常数

借助价子模型，讨论了原子核中的质子电形状因子GE~P（Q~2）和π衰变常数fπ。

By using the valon model , the electric form factor of the proton in the nucleusG_E ~ P ( Q ~ 2 ) , and π decay constant f_ π are discussed .

研究结果表明：腔场的衰变常数对不同类型的Bell纠缠态的影响完全不同，其中Ψ〉12态具有强烈的抗消纠缠的能力，而Φ〉12态是一个脆弱的纠缠态。

The results show that the influence of the cavity decay constant on different kinds of Bell states is completely different , and the state Ψ〉 - 12 is a robust entangled state against the decoherence while the state Φ〉 - 12 is a fragile entangled state .

本文用康奈尔势模型计算了赝标介子的衰变常数和D~0D~0系统、B~0B~0系统中的B参数。

Using the relativized Cornell potential model and with some relativistic correction , we calculate the decay constants of pseudoscalar mesons and the B parameters of D ~ 0-D ~ 0 and B ~ 0-B ~ 0 systems .

在建立模型的过程中，充分考虑了地表富集层的厚度、137Cs在此层中的分布特征、137Cs的衰变常数、年沉降分量、犁层厚度和采样年份等因素。

During constructing the model the depth of surface enrichment layer , the 137 Cs depth distribution pattern in enrichment layer , the radioactive decay of 137 Cs , the 137 Cs input fraction , the depth of plow layer and sampling year were considered .

我们给出了衰变常数的表达式以及衰变常数与赝标量混合角之间的关系。

We give their expressions and the relations between decay constants and pseudoscalar mixing angle .

介子衰变常数的格点计算

Lattice Calculation of Decay Constants of Mesons

本文提出了一个不用迭代程序分解已知一组份衰变常数的三组份衰变曲线的方法。

A method without iterative procedure is presented for resolution of a three-component decay curve with a decay constant being known .

在零功率堆中子衰变常数（α常数）瞬态测量实验时，必须进行本底中子的屏蔽。

It is necessary to shield the background neutron during the measurements of neutron decay constant on the zero power assembly .

HCD中铀基态原子衰变时间常数和亚稳态原子寿命测量

Measurement of decay time constant of ground and metastable states of U atoms in a HCD lamp

在测定其荧光寿命及荧光量子产率基础上计算出它们的辐射及非辐射衰变速度常数。

On the base of fluorescence quantum yield and lifetime measurement , the rate constants of radiation decay and non radiation decay of this compound were calculated .

在LM中计及单圈顶角修正时计算核子共振态强衰变宽度及其耦合常数探讨

The Discussion of the Coupling Constant and Calculation of the Nucleon Resonance State Strong Decay Width When the Single Loop Vertex Correction is Taken into Consideration in the LM

列举了中子衰变弱相互作用常数和中子电偶极矩的最近测量结果。

The newest experimental results of weak interaction constants defined in neutron decay and neutron electrical dipole moment are given .

放射性衰变曲线分解的非迭代方法（Ⅰ）&已知一组份衰变常数的三组份衰变曲线的分解

Non-iterative methods for resolution of radioactive decay curves (ⅰ) resolution of three-component decay curve with a decay constant being known