Minefield Indicators and Analytical Mine Contamination Assessment in Scientific Projects and in Practice

The key factors of the application of the airborne remote sensing technology for humanitarian demining are the minefield indicators [1] or the indicators of mine presence and the indicators of mine absence [2] and the analytical assessment of the contamination by the landmines [3]. The basic simple concept of the minefield indicators was given in [1], where it was related to the ordinary physical features of the artificial and natural objects in the mine suspicious area. Similar concept was used in other works, while in [2] were introduced signatures of the minefield indicators and additional contextual features. The signatures depend on the sensors used for the remote sensing and this aspect was thoroughly considered in [2]. The contextual features can be derived by the analytical assessment of the terrain contamination by the land mines [3], addition of the formalized knowledge enables efficient use of the indicators for the support of the decision making and for suspicious area reduction [4]

Neutron total cross section measurements of gold and tantalum at the nELBE photoneutron source

Neutron total cross sections of $^{197}$Au and $^\text{nat}$Ta have been measured at the nELBE photoneutron source in the energy range from 0.1 - 10 MeV with a statistical uncertainty of up to 2 % and a total systematic uncertainty of 1 %. This facility is optimized for the fast neutron energy range and combines an excellent time structure of the neutron pulses (electron bunch width 5 ps) with a short flight path of 7 m. Because of the low instantaneous neutron flux transmission measurements of neutron total cross sections are possible, that exhibit very different beam and background conditions than found at other neutron sources.Comment: article (18 pages, 10 figures, 2 tables) with attached data tables (13 pages