Near Ambient Pressure X-ray Photoelectron Spectroscopy (NAP-XPS)

XPS is a spectroscopic technique that allows for the chemical composition of the surface of a sample to be determined.

Enquire Now

Or call us now on 0161 275 8382

Detailed Description

Soft X-rays are fired at the sample and photoelectrons are ejected. These photoelectrons carry information about the elements present in the sample and their chemical environment.

 

Uses/Applications

Conventional XPS is performed under high vacuum and so is a post-mortem technique. NAP-XPS overcomes this limitation by placing the sample inside a special high pressure cell connected to the analyser through several layers of differential pumping. This means that surfaces can be studied in-situ during chemical reactions; for example following the surface chemistry of a catalyst while it is operating.

In the NAP cell

Analysis of samples in the presence of a gas (or mixture of gases) up to a total pressure of 25 mbar. Currently available gases: CO2, H2O, O2, H2, CO, NH3. Other gases may be possible by request.

Heating/cooling of samples from ~ 0ºC to 700ºC during analysis

In UHV

Standard UHV sample prep (sputter/anneal cycles)

Cluster-ion sputtering (depth profiling of fragile samples such as polymers)

Dedicated chamber for evaporation of organics etc.

LEED (low-energy electron diffraction)


Enquire now

Fill in the form and a member of the Royce team will be in touch.

Thanks for your message, it has been sent.