BEIJING.readme
Level density parameters for the generalized superfluid model
and utility code to retrieve level density parameters
(Provided by Su Zongdi, CNDC Beijing)
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Original name Present name Contents
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BEIJING_NLD_1_1_GSM.DAT beijing_bcs.dat BCS parameters
BEIJING_NLD_1_1.FOR beijing.for Retrieval code
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1. beijing_bcs.dat
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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
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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
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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
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[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
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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.