INTERNATIONAL ATOMIC ENERGY AGENCY NUCLEAR DATA SERVICES DOCUMENTATION SERIES OF THE IAEA NUCLEAR DATA SECTION

IAEA-NDS-178
Rev.0, March 1997

FENDL/D2.0
Decay Data Library for Fusion Applications

Released on March 14, 1997

Prepared by R.A. Forrest and processed by F.M. Mann

Summary documentation by
A.B. Pashchenko, H. Wienke

Abstract: The FENDL-2 sublibrary FENDL/D-2.0 contains decay properties (decay type, decay energy, half life) for 1867 nuclides and isomers. It is identical to the EAF-4.1 decay library and is therefore complementary to the activation cross section sublibrary FENDL/A2.0. The data, in ENDF-6 format as well as processed into MCNP and REAC compatible formats, are available from the IAEA Nuclear Data Section online via INTERNET by FTP command, or on magnetic tape upon request.

Note:

The IAEA-NDS-reports should not be considered as formal publications. When a nuclear data library is sent out by the IAEA Nuclear Data Section, it will be accompanied by an IAEA-NDS-report which should give the data user all necessary documentation on contents, format and origin of the data library.

IAEA-NDS-reports are updated whenever there is additional information of relevance to the users of the data library.

For citations care should be taken that credit is given to the author of the data library and/or to the data center which issued the data library. The editor of the IAEA-NDS-report is usually not the author of the data library.

Neither the originator of the data libraries nor the IAEA assume any liability for their correctness or for any damages resulting from their use.

96/11

Citation guideline:

This data library should be cited as follows:

R.A. Forrest and F.M. Mann, "FENDL/D-2.0, decay data library for fusion applications", summary documentation A.B. Pashchenko and H. Wienke, report IAEA-NDS-178 (IAEA March. 1997). Data library retrieved online (or: received on tape) from the IAEA Nuclear Data Section.

FENDL/D2.0
Decay Data Library for Fusion Applications
Released on March 14, 1997

Prepared by R.A. Forrest and processed by F.M. Mann

Summary documentation by
A.B. Pashchenko, H. Wienke

The decay data library FENDL/D-2.0, version 1 of June 1996 is a sublibrary of FENDL-2, an improved nuclear data library for fusion applications, and contains the basic decay information for 1867 nuclides and isomers needed for general activation calculations (see Attachment, where a comparison of FENDL/D-2.0 with FENDL/D-1.0 is given). According to the recommendations of the IAEA Advisory Group Meeting on "Completion of FENDL-1 and Start of FENDL-2", Del Mar, California, USA, 5-9 Dec. 1995 [Ref. 1], this data library is identical to the EAF-4.1 decay data library [Ref. 2]. This library was chosen in order to make the identification of daughter nuclides in the decay library as compatible as possible with the activation cross section library FENDL/A-2.0 [Ref. 3] in which the majority of the reactions are adopted from the activation cross section library EAF-4.1[Ref.2]. The presence, however, of several reactions in FENDL/A-2.0, which are not from EAF-4.1, implies still some inconsistencies of isomer identifications between the two libraries.

The FENDL-2 subdirectory:

[.DECAY.FENDLD]

contains the basic decay data which are, for the largest part, in ENDF-6: MF=8, MT=457 format and consists of the following information:

Nuclide
Half-life
Number of decay modes
Fractions of decay in each decay mode (branching ratio)
Decay daughter nuclide in each decay mode
Gamma-ray intensity and energy spectrum in each decay mode

In order to include identifying information on the stable nuclides required for activation calculations, entries are included in ENDF-6, MT=451 format for these nuclides (for a few nuclides in ENDF-5 format, with one fewer line in the MT=451 section).

The basic decay data library has a size of about 30 Mb. The data are split into 10 subfiles covering the particular groups of nuclides shown below.

FENDLD_2.001 ¹H - ⁸⁶Br
FENDLD_2.002 ⁷⁴K - ¹¹¹Ru
FENDLD_2.003 ⁹⁶Rh - ^131mSn
FENDLD_2.004 ¹¹²Sb - ¹⁴⁰Cs
FENDLD_2.005 ¹²⁴Ba - ¹⁶⁰Eu
FENDLD_2.006 ¹⁴⁵Gd - ¹⁷⁶Tm
FENDLD_2.007 ¹⁶²Yb - ¹⁹⁵Re
FENDLD_2.008 ¹⁸⁰Os - ²¹⁰Tl
FENDLD_2.009 ¹⁹⁵Pb - ²³⁴Ac
FENDLD_2.010 ²²⁴Th - ²⁴⁸Cm

All materials that are presented in the FENDL/D-2.0 basic decay library were processed into REAC compatible format by F.M. Mann, Hanford, Westinghouse, U.S.A. The data are available in subdirectory

[.DECAY.PROCESSED.REAC]

as data file DECAY.REAC (0.49 Mb).

The REAC formatted data are grouped into 21 bins.

References

1. IAEA Advisory Group Meeting on "Completion of FENDL-1 and Start of FENDL-2", Del Mar, California, USA, 5-9 December 1995, summary report prepared by A.B. Pashchenko and published as report INDC(NDS)-352, March 1996.

2. J. Kopecky and D. Nierop, The European Activation File EAF-4 - Summary Documentation - ECN-C-95-072, December 1995.

3. A.B. Pashchenko, H. Wienke, J. Kopecky, J.Ch. Sublet and R. Forrest, "FENDL/A-2.0, Neutron Activation Cross Section Data Library for Fusion Applications", IAEA-NDS-173, Rev. 0, (International Atomic Energy Agency, March 1997).

Attachment (95 KB, PDF)     Comparison of FENDL/D-1.0 and FENDL/D-2.0

Appendix 1

DISTRIBUTION OF THE FENDL-2 LIBRARY

(As recommended at the IAEA Advisory Group Meeting on FENDL,

held at IAEA Headquarters, Vienna, Austria, March 1997.)

The master copy of the FENDL-2 library resides with the Nuclear Data Section of the International Atomic Energy Agency. To facilitate user access to the library the official copy of FENDL-2 will be distributed to the major nuclear data centres in Europe (NEA Data Bank, Paris), Japan (JNDC, Tokai-mura), Russia (CJD,Obninsk) and USA (NNDC, Brookhaven and RSIC, Oak Ridge). As agreed between data centers, sharing common FENDL information, the recipients are receiving now the same products from all above centers. The data are available and may be further distributed to the user community according to the customer service options given below. Each FENDL sub-library will be in a single data set, i.e. Activation, Decay, etc. in the 8 mm tape, 6 mm tape, 4 mm tape or standard 9 track magnetic tape (6250 bpi or 1600 bpi) and CD-ROM options. The interested scientists may request FENDL-2 (or parts of it) directly from the IAEA/NDS or from one of these centers.

FENDL CUSTOMER SERVICE OPTIONS

Table notes

1) NNDC will distribute FENDL unprocessed data
2) RSIC will distribute FENDL processed data
3) RSIC offers cost free service to ITER customers