Initial values of parameters for variable moment of inertia models

Title of program: INVAP Catalogue Id: ABQN_v1_0 Nature of problem The long write-up summarizes the procedure for determining the initial values of parameters for the fitting of rotational spectra in even-even nuclei. The functional form of the fitting is: E_I=C_2(J_i-J_0)^2 + C_3(J_I- J_i-J_0)**3 + C4(Ji-J0)^4 + ... with the condition delta E_I/delta J_I = 0, where E_I and J_I are the excitation energy and moment of inertia at a certain angular momentum I, respectively, and C_i and J_0 are the parameters of interest. While the determination of these parameters can be done fo ... Versions of this program held in the CPC repository in Mendeley Data ABQN_v1_0; INVAP; 10.1016/0010-4655(81)90094-1 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)

程序名称：INVAP
目录编号：ABQN_v1_0
问题本质：本详细说明阐述了偶偶核转动谱拟合参数初始值的确定流程。拟合所用的函数形式为：$E_I=C_2(J_I-J_0)^2 + C_3(J_I - J_i - J_0)^3 + C_4(J_I-J_0)^4 + dots$，并满足约束条件$frac{partial E_I}{partial J_I}=0$，其中$E_I$与$J_I$分别对应特定角动量$I$下的激发能与转动惯量，$C_i$与$J_0$为待求解的参数。尽管上述参数的确定流程可通过……完成。
本程序的版本收录于孟德雷数据（Mendeley Data）的CPC程序库中：ABQN_v1_0；INVAP；10.1016/0010-4655(81)90094-1
本程序源自贝尔法斯特女王大学所藏的CPC程序库（1969-2018年）