TF IsotopeTracers
Nitrogen tracers: N-15 is rare. If you dope nitrogen sources with it you can see where the leak into environment. This is a stable tracer so it would be able to monitor long time plume expansions.
Catchment hydrology
High Flux MeV photon profiler
http://accelconf.web.cern.ch/accelconf/p99/PAPERS/WEA90.PDF
http://ieeexplore.ieee.org/ielx5/5379507/5398121/05398374.pdf?tp=&arnumber=5398374&isnumber=5398121
CVD Diamond film
Film Vendor only
http://www.e6cvd.com/cvd/page.jsp?pageid=415
Alemeda Applied Sciences Corporation
http://www.aasc.net/drds http://www.aasc.net/media/DRD-AppNote.pdf
Diamond x-ray view screen http://www.diamond-materials.com/EN/products/cvd_for_xray/fluorescence_beam_monitors.htm
http://www.npl.co.uk/upload/pdf/091104_nuc_galbiati.pdf
NIM paper from 2002