Instrument

The new Photron ThAr lamps were found to work OK. This new supplier/brand was chosen as European companies cannot work with radio-active Thorium any longer due to restrictive EU regulations. Tests with FIES show that the spectrum is very similar to the Hereus lamp spectrum. A very similar number of lines is found (by FIESTool) from the standard ThAr-line list. One of the new Photron ThAr lamp was installed in the top FIES calibration unit in February



Thomas Augusteijn 2016-05-05