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铷放电管是铷光管原子频率标准的关键元件,这个频率标准用于NAVSTAR/GPS卫星并且将在未来的卫星中得到应用。管子的可靠性是个值得关心的问题,它的寿命是根据满足可靠性的因素来设计的,随着时间的增长,由于扩散到管壁的铷电荷逐渐减少。计算其消耗量C的公式为C=A+B,在该等式中T为真空管的工作时间,B为系数,它与电荷的扩散有关并且由实验决定。A假定为实际瞬时反应过程的损耗,在我们的一些数据中,损耗的测量表明反应的完结是由时间决定的。我们发现它们之间的关系可以用两个常量来描述,A’和D,A’(1-exp(-DT),由动力学第一级反应推得,这样我们可以在有限的实验数据的基础上更好地预测铷的长期损耗。
The rubidium discharge tube is a key element of the atomic frequency standard of the rubidium tube. This frequency standard is used for NAVSTAR / GPS satellites and will be used in future satellites. The reliability of a pipe is a concern, its life is based on the reliability factor to design, with the increase of time, due to the diffusion of RBD wall charge gradually reduced. The formula for calculating its consumption C is C = A + B, where T is the working time of the vacuum tube and B is the coefficient which is related to the charge diffusion and experimentally determined. A is assumed to be the loss of the actual transient reaction process. In some of our data, the measurement of loss indicates that the end of the reaction is time-dependent. We find that the relationship between them can be described by two constants, A ’and D, A’ (1-exp (-DT), derived from the kinetic first order reaction, so that we can work in a limited experimental data Based on a better prediction of the long-term loss of rubidium.