BEIJING.readme


      Level density parameters for the generalized superfluid model
          and utility code to retrieve level density parameters 
                    (Provided by  Su Zongdi, CNDC Beijing)
      *************************************************************
 Original name            Present name     Contents
 .......................  ...............  ..............
 BEIJING_NLD_1_1_GSM.DAT  beijing_bcs.dat  BCS parameters
 BEIJING_NLD_1_1.FOR      beijing.for      Retrieval code 
 ........................................................
1. beijing_bcs.dat
------------------
   This file makes part of the Chinese Evaluated Nuclear Parameter Library
   (CENPL) and was prepared by Ge Zhigang,  Su Zongdi (China Nuclear Data 
   Center, CIAE, P.O.Box 275-41, Beijing 102413) and Huang Zhongfu, Dong 
   Liaoyuan (Department of Physics, Guangxi Univ. Nanling, 530004) on 
   20 August 1995.
   Contents
   --------
   This file contains two sets of level density parameters for the
   generalized superfluid model (GSM) formula recommended by Ignatyuk 
   et al.[1] and Lu et al.[2]. It contains GSM level parameters for 249 
   nuclides ranging from Ca-40 to Cf-250.       
   Format
   ------          
    Z   : charge number. column 1-3
    EL  : element symbol, column 5-6
    A   : mass number, column 8-10
    Esc : shell correction to nuclear binding energy in MeV,
          column 13-18
    E2+ : experimental value of energy for the first 2+ level of the
          even-even nuclei or extrapolation of these values for the
          neighboring odd and odd-odd nuclei in MeV, column 20-23.
    Dp  : deformation parameter, column 25-28.
    as  : asymptotic value of the level density parameter at high
          excitation energy in 1/MeV for Lu et al, column 31-35.  
    Esh : supplementary shift of the excitation energy in MeV for
          Lu et al, column 37-41.
    as  : asymptotic value of the level density parameter at high 
          excitation energy in MeV for Ignatyuk et al, column 44-48.  
    Esh : supplementary shift of the excitation energy in MeV for
          Ignatyuk, column 50-54.
    References
    ----------
    [1]  O.T. Grudzevich, A.V. Ignatyuk and V.I. Pluaskin, <<Systematics of 
         level densities>>, Private communication, Nov. 1991.
    [2] Lu Guoxiong,Dong Liaoyuan,Huang Zhongfu,Qiu Guochun and Su Zongdi, 
        <<Research on GSM level density formula>> , to be published.
2. beijing.for      
--------------
   Management retrieval code for 
 
     beijing_bs.dat (see directory *.RECOMMENDED)
     beijing_bc.dat (See directory *.RECOMMENDED)
     beijing_bcs.dat
   
   This code is used to retrieve and manage the level density sublibrary. 
   It not only can retrieve the level density parameters and the data 
   relative to level density, but also can compare the Do and No values 
   calculated by using the different kinds of level density parameters with 
   the relevant data in beijing_*.dat This code can provide two retrieval 
   ways. One is a retrieval for a single nucleus(SN), and another is one 
   for a neutron reaction (NR). The latter contains four kinds of retrieval 
   types corresponding four types of different fast neutron calculation 
   codes.  
   The code consists of the following subjects:
   1) Data base of level density parameters and data relative to
      level density parameters.
      File: G_C.DAT, B-S.DAT, GSM.DAT and LRD.DAT.
   2) Source code in FORTRAN and executable code. 
      File: NLD.FOR and NLD.EXP.
   3) Two output files which will be created automatically after running 
      the system.
      File: OUTNLD.DAT, OUTNLD.TXT.
   Two versions of the system were provided. One of them is used for
   Micro VAXII and other one is for Personal Computer(PC). The PC version
   is supported by software NDP FORTRAN. 
  
   How to run the system ?
   Enter the following command:
   " run NLD  or  run386 NLD (for PC )"
  
   Then the information about this sub-library will be shown on the screen.
   Please fellow the prompt displayed to input the required information 
   and give your selections.
   When the retrieval procedure is completed, there are two output files 
   will be created automatically. OUTNLD.DAT is the retrieved parameters 
   record and OUTNLD.TXT is the retrieval process record.