Neutron inelastic scattering measurements

✍ Scribed by G.W. McClure; D.W. Kent

• Publisher: Elsevier Science
• Year: 1955
• Tongue: English
• Weight: 140 KB
• Volume: 259
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/0016-0032(55)90849-8

✦ Synopsis

When a continuous current of several microamperes per square centimeter is passed through a single crystal of oxygen-poor thorium oxide in vacuum, the potential difference across the crystal rises abruptly at first and then continues to increase in time. Observations between 900 ° C. and 1300 ° C. show that, immediately after the initial rise, the rate of rise of polarization is so rapid as to require oscillographic examination. The time required for final equilibrium to be established is, however, several hours. Measurements of the initial rise have been made as a function of temperature. Values of resistivity vary from 5700 ohm-cm at 900 ° C. to 400 ohm-cm at 1280 ° C. The plot of log