These pages outline the Facility for the Luminescence of Minerals at the University of St Andrews. The facility has been designed to allow detailed spectroscopic analysis of minerals and synthetic solids. We can measure luminescence using a variety of forms of excitation including lasers, x-rays, electrons and heat from 20 K to 400 C. Time-resolved luminescence measurements with lifetimes from ns to s can also be measured. A full description of the system is given here.
The facility has recently been reopened following a move to a purpose-built luminescence suite on the University of St Andrews North Haugh Science campus.
We also have UV-Visual Spectrophotometer system can measure the colour in reflectance and transmission modes from the near UV (250 nm) to the near IR (800 nm).
The purpose of the instrumentation is to use the physical and optical properties of minerals to probe the nature and concentrations of defects in mineral systems. The manner in which defects form, are stabilised and cluster are sensitively recorded in the luminescence and colour of minerals.
We welcome interest from other groups interested in using the facility.
The Instrumentation includes:
- UV-Visible Spectrophotometry (Perkin Elmer 650 Lambda)
- Petrographic Cathodoluminescence (CITL Luminoscope V with a dedicated high sensitivity CCD camera). A manual for this is found here: CL Manual St Andrews.
- UV-excitation spectroscopy system (built in house)
- X-ray-, electron- and laser-excited luminescence spectroscopy from 20 K to 400 C (RLTLCL system, built in house)
- ns lifetime time-resolved photoluminescence (using a fixed 372 nm picosecond laser) (an Edinburgh Instruments Lifespec 2 system)
- High temperature tube furnaces for making synthetic mineral analogues and for the thermal treatment of natural materials.
In-house software for processing RLTLCL data for Windows can be uploaded here.
Advice on importing RLTLCL data into Origin is given here: Importing RLTLCL data into Origin 11 May 2015.