Fission Segment

Experimental Fission Barriers

Fission barrier parameters recommended for the transthorium nuclei by V.M.Maslov [1] and for the preactinides by G.N.Smirenkin [2]. For nuclei with Z<80 the liquid drop barriers described by Sierk's code [3] are recommended with the addition of the ground-state shell corrections estimated by the Moeller-Nix (Segment 1) or the Mayer-Swiatecki (Segment 5) mass formulae.

References
[1] V. M. Maslov. RIPL-1 Handbook. TEXDOC-000, IAEA, Vienna, 1998, Ch. 5.
[2] G. N. Smirenkin. IAEA-Report INDC(CCP)-359,IAEA, Vienna, 1993.
[3] A. Sierk. Phys. Rev. C33 (1986) 2039.

Data File (3.2kB)
README File (1.9kB)

ETFSI Fission Barriers

Predictions of the fission barriers and saddle point deformations obtained within the Extended Thomas-Fermi plus Strutinsky Integral (ETFSI) method for 2301 nuclei with 78 <= Z <= 120.

References
[1] A. Mamdouh, J. M. Pearson, M. Rayet and F.Tondeur (1998), Nucl. Phys. A644, 389.
[2] A. Mamdouh, J. M. Pearson, M. Rayet and F.Tondeur (2001), Nucl. Phys. A679, 337.
[3] G. N. Smirenkin (1993) IAEA-Report INDC(CCP)-359.

Data File (237kB)
README File (4.3kB)

Code for Liquid Drop Fission Barriers

Subroutine can return the barrier height, the ground-state energy and the angular momentum at which the fission barrier disappears.

References
[1] A. Sierk, Phys. Rev. C33 (1986) 2039.

Code (15kB)
README File (3.5kB)

Retrieval of Fission Barriers

Atomic number (Z)  
Mass number (A)      (blank for all mass numbers)


Level Densities at Saddle Points Calculated within HFBCS


Nuclear level densities at the fission saddle points for some 2300 nuclei with 78 <= Z <= 120 included in the ETFSI compilation [1]. The fission barriers and saddle point deformations are determined within the Extended Thomas-Fermi plus Strutinsky Integral (ETFSI) method. For each saddle point, the single-particle level scheme is calculated consistently by the HF-BCS model constrained on the corresponding quadrupole, octupole and hexadecapole moments.

References
[1] A. Mamdouh, J. M. Pearson, M. Rayet and F.Tondeur (2001), Nucl. Phys. A679, 337.
[2] S. Goriely, F. Tondeur, J. M. Pearson (2001), Atomic Data Nuclear Data Tables 77, 311.
[3] P. Demetriou, S. Goriely (2001), Nucl. Phys. A695, 95.


README File (5.0kB)

Retrieval of Level Densities at Saddle Points

Atomic number (Z)  
Mass number (A)