Zeolites

	The many cavities in LTA, a zeolite, are clearly visible in this diagram.

One group of materials we are particularly interested in studying is the zeolites. Zeolites are formed from oxygen, sodium, and aluminum, and are widely used in many industries. However, they have many subtle defects and irregularities that require a sensitive probe to study their structures. All zeolites have cavities, and many have ions which create weak electric fields. We want to know how positronium will behave under these conditions.