Xenarthra is effectively blank correction software. It can take any number of isotopes (as long as they have an associated uncertainty) and blank correct. Any number of samples can be corrected for any number of blanks in one go. Once blank correction has been applied, Xenarthra can then correct the data. With 4He-3He data it will simply calculate the ratio of the 4He-3He inputs. With 40Ar-39Ar data it will correct for mass discrimination, isotope decay, interferences etc. The user can select whether to use the "old" or "new" decay constants. A copy of the java distribution is below. If you would like further information, a user guide, or help with making the software read your specific data format, please


NuDisplay is software written to take the Noblesse RAW datafiles, and allow the user to reanalyse the data. Factors such as the collector deadtime and analysis start time can be varied, and the user can select the 'best' method of data analysis. Written in Java to be platform independant.


ArMaDiLo was written whilst at the Open University, and was replacement software for the Excel Macro Simon Kelley wrote many years ago to handle the data from the mass spectrometers. At present it handles the data formats of the Noble Gas machines running at the OU, but can be adapted for any instrument. The most recent version of the software allows for the age calculations for both the 'old' and 'new' potassium-40 decay constants. Written in Visual Basic for Windows.


This is a very simple program to produce contour plots of spot-age data. An image of the spot data is loaded into the software, and by clicking on the screen spots (and their associated ages) are input. A delaunay triangulation is performed in real time across a user definable mesh. The software outputs this mesh, allowing the contour plots to be made in any suitable plotting software. Written in Visual Basic for Windows.


The ORBital ELEMents software was written to derive the sources of impacts on dust detectors in space. For dust, the impact time, pointing history, shape and geometry of the detector constrain the possible incoming directions of the impactor. If the detector is able to measure impact speed (with its associated uncertainty), this will further constrain the possible sources of the dust. The software steps through all possible impact trajectories over a range of speeds and calculates the orbital elements for all of these trajectories, assigning each a probability. This not only provides the user with the most likely sources of the dust, but also orbits which are impossible sources. The software has been used with the DEBIE detector in LEO, the Cosmic Dust Analyser on board Cassini, and was applied to a fireball event in 2004. Written in Delphi Pascal for Windows.