High-pressure magnetic resonance imaging up to 40 MPa

A high-pressure Vessel designed for use with commercial magnetic resonance imaging equipment at up to 40 MPa of pressure was used and tested. Special features of the vessel are the following: 1) 12.6 mm sample chamber i.d.; 2 ) only non-magnetic parts; 3) visible sample from the outside; 4) resistant to corrosive chemicals, and; 5) sample could be manually translated and ro tated in situ. This apparatus was demonstrated through observation of CO2 c lathrate-hydrate growth in a water droplet injected into liquid CO2 at 20 M Pa. (C) 2000 Elsevier Science Inc. All rights reserved.