FTIR spectrometer and microscope with infrared polarizer

James Madison University

http://educ.jmu.edu//~johns2ea/laboratory.htm

Contact Information

Elizabeth Johnson

540-568-6130

johns2ea@jmu.edu

Harrisonburg

VIRGINIA

Instrument Type

Infrared Spectroscopy

Thermo-Nicolet Magna 760 FTIR spectrometer and Nic-plan microscope with custom polarizer

Application:

Mineral structure (atomic)

Typical Use:

Transmission spectroscopy of the mid-IR region (~1000-6000 cm^-1). Quantification and characterization of polarized spot analyses (down to ~30 um) of hydrous species in nominally anhydrous minerals. Unpolarized measurements of H₂O and CO₂ in melt inclusions for quantification. Possible reflectance or transmission measurements for structural modes of some minerals. The instrument has an ATR (attenuated total reflectance) attachment for the microscope, but the visitor would need expertise with this option.

Conditions for Use:

Visitors are invited to work in the lab to work with lab personnel Visitors are invited to work in the lab to design and do the work yourself

User Fees:

There is no charge for use; the limiting factor is the schedule of the operator.

Instrument Priorities:

Priority will be given to regional users (near or in Virginia) and those who are willing to collaborate with the operator.

Remote Use:

Sample Preparation:

Potential users should contact me for discussion of sample preparation - for transmission spectroscopy, free-standing thick sections must be prepared.