gngf - Returns Gn/Gf of a nucleus
#include <nuclib.h>
double gngf(int ilev, int ibar, int ishl, int Z, int A, int J, double U);
Link with -lnuclib.
The gngf() function returns the value of Gn/Gf for a given J and U. The level density parameter at the saddle point is assumed to be 1.02 times the level density parameter of the ground state. The rotational energies of the ground state and saddle point are calculated with the finite range droplet model of Sierk.
ilev |
Level density paramenter switch: |
ilev = 0 a=A/8.5 (Fermi-gas)
ilev = 1 a=A/10 (highly excited nuclei)
ilev = 2 Temperature dependent level density (Lestone)
ilev = 3 Excitation energy dependent level density
(Ignatyuk)
ibar |
Fission barrier switch: |
ibar = 0 Sierk FRDM barrier
ibar = 1 Thomas-Fermi barrier
ishl |
Shell correction switch: |
ishl = 0 No shell correction
ishl = 1 Shell correction (forces ilev=3, ibar=1)
Z A |
Atomic and mass number of nucleus |
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J |
Total spin of nucleus |
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U |
Excitation energy in MeV |
The function gngf() returns the dimesionless value described.
Vandenbosch and Huizenga, "Nuclear Fission". Academic Press 1973.
This manual page was written by Ricardo Yanez.
Report bugs to <ricardo.yanez@calel.org>.
Copyright © 2012-2017 Ricardo Yanez.
This is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version.
nuclib(3)