The specific heat of irradiated glossy carbons from 3k to 80k

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dc.contributor.advisor Mrozowski, Stanislaw en_US Myers, Bruce A. en_US 2011-06-03T19:31:49Z 2011-06-03T19:31:49Z 1976 en_US 1976
dc.identifier LD2489.Z78 1976 .M93 en_US
dc.description.abstract The specific heat of a material is simply the measure of the amount of energy required to raise the temperature of a unit mass of the material by one degree. The specific heat of a material depends on the structure, pressure, and temperature of the material. Hence, measurement of specific heat can indicate structural changes and transitions in the material.Previous work at the State University of New York at Buffalo, shored anomalies in the specific heats of Glassy Carbon samples which had been exposed to neutron irradiation. Neutron irradiation of the carbon introduced defects in the material and the specific heat was dependent on the time of sample irradiation. The specific heat plotted as a function of temperature showed peaks at temperatures below 2.0°K. This indicates some kind of transition in the material. Also the specific heat values, which were measured up to 4.5°K, were much lower than the specific heat of the original nonirradiated material. Measurements indicated that the two kinds of samples had the same specific heat at room temperature. This kind of change in the specific heat of carbon has not been explained.The purpose of this project was to investigate the specific heats of these samples above 4.50K to determine where and how the anomalies in the specific heat disappeared at higher temperatures. The specific heats were measured by cooling the sample with liquid helium. This enabled the sample to obtain temperatures of 2.5°K and up. The specific heat was measured by electrically heating the thermally isolated sample and measuring the change in its temperature with a germanium resistance thermometer.
dc.format.extent iv, 60 leaves : ill. ; 28 cm. en_US
dc.source Virtual Press en_US
dc.subject.lcsh Carbon compounds. en_US
dc.subject.lcsh Specific heat -- Measurement. en_US
dc.title The specific heat of irradiated glossy carbons from 3k to 80k en_US Thesis (M.S.)
dc.identifier.cardcat-url en_US

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  • Master's Theses [5454]
    Master's theses submitted to the Graduate School by Ball State University master's degree candidates in partial fulfillment of degree requirements.

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