The ability to detect Al to be performed with the Al- beam instead of the traditional method, injection of Al O-.The advantage of this is that the Al- beam is up to twenty times more prolific than Al O-, thus superior counting statistics can be obtained for the equivalent measuring time.It transpires that there was not just one but at least four major advances of glacier ice during the last 70,000 years.
This average charge state is proportional to the Z of the ion, thus giving rise to a physical separation between ions of differing Z at the exit of the magnet (see lower figure).
A soil depth profile comparing the two elements is shown in the figure.
A study of sediment movement through the Herbert River catchment, Queensland, Australia, comparing Pu measurements is presently underway.
This should lead to Mn is being pursued with the hope that isotope could be used as a new cosmogenic nuclide for erosion-rate applications.
Its long half-life, at 3.7 Ma, means it should be suitable for examining landscape processes at the timescale of the order of 1 Ma.