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中文摘要：
采用乘积近似法构建PuH2气态分子配分函数的合理模型,其中,转动配分函数采用考虑了离心畸变的WATSON刚性转子模型,振动配分函数采用谐振子近似。研究在20～6000K温区内的分子总配分函数,把整个温区划分为五个温度区间,再用一个温度T的五阶多项式,分别对划分的温度区间内的总配分函数进行多项式拟合,分别得出每个区间的六个拟合系数。通过这些拟合系数,便可快捷、准确地获得该气态分子在所研究温区内任意温度的总配分函数。
英文摘要：
The model of total internal partition functions for PuH2 is constructed with the product approximation.Furthermore,the rotational partition sums Qrot adopt the WATSON rigid rotator model which takes into account centrifugal distortion correction,the vibrational partition sums Qvib use the harmonic oscillator approximation model.The total internal partition functions are calculated at the temperatures from 20-6000K.The temperature range is divided into five regions and the calculated total internal partition functions are fitted to a five-order polynomial expression in T,and the coefficients are evaluated in five temperature regions.This allows a rapid and accurate calculation of the total internal partition functions at the temperature from 20-6000K.
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