Documentation on the LA150U Library

Released: 1996-07-25

The 150 MeV photonuclear library designated LA150U was released on July 26, 2000 and updated on October 18, 2001. There are data tables for 13 isotopes in the library. Twelve are based on recent T-16 work done as part of a coordinated research project for the IAEA [1,2]. These evaluations were created by Mark Chadwick and Phil Young using the GNASH modeling code [3]. They include reaction cross sections and emission distributions for all significant channels and extend up to 150 MeV incident photon energy. The 13th isotope (H-2) was added in 2001. This evaluation was created by Gerry Hale of T-16 using the R-matrix analysis code EDA and includes the photodisintegration cross section with the neutron and proton emission distributions for incident photon energies up to 30 MeV. All of these evaluations were processed using NJOY99 version 5 or later.

The isotopes and ZAIDs on LA150U are as follows: (all ZAIDs use the ID .24u)

Isotope	ZAID
H-2	1002.24u
C-12	6012.24u
O-16	8016.24u
Al-27	13027.24u
Si-28	14028.24u
Ca-40	20040.24u
Fe-56	26056.24u
Cu-63	29063.24u
Ta-181	73181.24u
W-184	74184.24u
Pb-206	82206.24u
Pb-207	82207.24u
Pb-208	82208.24u

References

1. P. Oblozinski, ed. "Handbook of Photonuclear Data for Applications." IAEA-TECDOC-1178. International Atomic Energy Association: Vienna, Austria, 2000.

2. IAEA Photonuclear Data Library

3. M. B. Chadwick, P. G. Young, R. E. MacFarlane, M. C. White and R. C. Little. "Photonuclear Physics in Radiation Transport: I. Cross Sections and Spectra." Nuclear Science and Engineering. Vol. 144, Issue 2, pages 157–173.