Neutron activation cross sections for short-lived isotopes in the range 16-20 MeV
Neutron activation cross section measurements for the production of short-lived isotopes have been carried for five neutron energies in the range 16 MeV to 20 MeV using the T(d,n)(4)He neutron source reaction. The activities observed in this work had half lives ranging from 7 seconds to several hours, but most were from about 10 seconds to a few minutes. The induced radioactivities were measured by observing gamma-rays emitted from irradiated samples with a germanium detector. A pneumatic sample transport system (rabbit) was built and a collection of natural and isotopically enriched sample materials analysed. The enriched isotopes and compounds were: (25)Mg(MgO), (46)Ti and (50)Ti(TiO(2)), (52)Cr, (53)Cr and (54)Cr(Cr(2)O(3)), (54)Fe(Fe(2)O(3)), (57)Fe(Fe-metal), (62)Ni(Ni-metal), (119)Sn(SnO(2)) and (138)Ba (BaCO(3)). The reference cross sections for this investigation were the (27)Al(n,p)(27)Mg, (27)Al(n,a)(24)Na and (93)Nb(n,2n)(92m)Nb reactions. Data were acquired for some 30 reactions. In several cases isomer ratios could also be measured. The cross sections derived from these data are compared with experimental results from the literature and with values calculated using the nuclear model code STAPRE-H95.
Bibliographic Reference: Paper presented: International Conference on Nuclear Data for Science and Technology, Trieste (IT), 19-24 May 1997
Availability: Available from (1) as Paper EN 40327 ORA
Record Number: 199810187 / Last updated on: 1998-02-12
Original language: en
Available languages: en