Materials prepared at IRMM for reactor dosimetry applicationsFunded under: FP3-MAT
The preparation of alloys for neutron fluence rate measurements is discussed. Satisfactory homogeneity in aluminium alloys can be difficult to achieve on a milligram scale due to the formation of coarse intermetallic particles, and suitable processing with a high solidification rate, cold working and annealing is essential. The example given is of the alloys Al-15 wt % U and Al-14 wt % Pu, where the inhomogeneity (in terms of relative standard deviation of alloying element) was determined by isotope dilution mass spectrometry as less than 0.2 % in each case for 20 mg samples. Some recent examples of dosemeter encapsulation are given, including NpO(2) and UO(2) microspheres in high purity vanadium and Al-Pu and Al-U fission foils in cold-pressed aluminium containers.
Bibliographic Reference: Paper presented: Eighth ASTM Euratom Symposium on Reactor Dosimetry, Vail (US), August 29 - September 3, 1993
Availability: Available from (1) as Paper EN 37818 ORA
Record Number: 199311279 / Last updated on: 1994-11-29
Original language: en
Available languages: en