Welcome to Spectroscopy

Following the restructuring of the Diamond Science Division, the Diamond Spectroscopy Group was built around four beamlines; the Microfocus Spectroscopy beamline (I18) the Core X-ray Absorption Spectroscopy (XAS) beamline (B18) and the two independently operating branches of the Versatile X-ray Absorption Spectroscopy beamline, I20-scanning and I20-EDE.  The EDE branch of I20 is now closed, the flagship Diamond II beamline SWIFT will in future offer milliseconds resolution for XAS. These four beamlines are complementary in many aspects, such as the energy range they cover, the size of the focussed beam spot delivered to the sample, and the time resolution they are able to reach. Nevertheless, each beamline has its unique characteristics and they are optimised for performing different types of experimental studies. Over the last year more than 1,350 peer-reviewed experimental shifts were delivered using the Spectroscopy Group beamlines, covering many different scientific disciplines, from chemistry and catalysis to environmental and life sciences, materials science, hard condensed matter and cultural heritage. As well as supporting a very vibrant user programme, many technical developments have also been implemented on the beamlines during the last year. Some of the developments have improved data quality and collection times, while others have added new capabilities to the beamlines.

 

 

Beamline B18 I18 I20
Techniques      
Energy range (keV)  5.5 - 19.5  2.05 - 20.5

I20-scanning:
4-34

Flux (ph/s) at sample (300 mA)    2 x 1012

I20-scanning: >5x1012 (Si(111) at 10 keV)

 

Beam size at sample  200 µm (V) x 250 µm (H)  2 µm (V) x 2 µm (H)

I20-scanning:
300 µm (V) x 400 µm (H)

 

Time resolution  10s of seconds    
Specimen environments   LN2/ LHe Cryostat, He chamber, LN2 cryostream, Furnaces to 1400 C LN2 and He pulse tube cryostats, LN2 cryostream, gas capillary cell, furnace reactor

 

I18
I20

Science Group Leader

New XAS BAG now available!

A Block Allocation Group (BAG) has been approved for urgent XAS measurements on energy materials on beamline B18. The measurements will be standard, room temperature and ex situ, and for a reasonable number of samples. Find out more...