SUMAC
Stanford USGS Micro Analysis Center

Hamamatsu Cathodoluminescence Detector
installed on a Jeol LV5600 Scanning Electron Microscope

A Hamamatsu Photo Multiplier Tube is used for cathodoluminescence imaging.  PMT output is connected directly to a JEOL auxillary input.  The Hamamatsu PMT high voltage power supply is interlocked with the JEOL vacuum system.


Photomultiplier tube inside the JEOL LV5600 sample chamber.


Zircon CL image from a ultra high pressure rock (China).


CL image showing growth zones in a zircon.