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Experimental determination of the Boltzmann constant: An undergraduate laboratory exercise for molecular physics or physical chemistry

Autor: T. C. DeVore, D. K. Havey, B. M. Boardman, H. M. Campbell

Publikováno v: American Journal of Physics. 80:1045-1050

This article describes an undergraduate laboratory exercise that uses optical spectroscopy to determine the magnitude and the uncertainty of the Boltzmann constant kb. The more accurate approach uses photoacoustic spectroscopy to measure the Doppler-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ec03dc33345fa55fc9fdc3b07b5d2963
https://doi.org/10.1119/1.4764490

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Static magnetic properties and magnetic phase diagram of Mn1−xNixCl2·2H2O

Autor: D. B. Bodkin, T. E. Borsari, J. J. Christophel, S. D. Kosovych, M. L. Laccheo, D. K. Havey, Gary C. DeFotis

Publikováno v: Physica B: Condensed Matter. 362:18-28

The magnetic properties of Mn1−xNixCl2·2H2O are examined by DC magnetization and susceptibility measurements on a wide range of compositions. The pure components are three-dimensional Heisenberg antiferromagnets, ordering at 6.7 K (MnCl2·2H2O) an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::791c3e36a1226df971db2b402bbcc480
https://doi.org/10.1016/j.physb.2005.01.465

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Absence of magnetic ordering in mixed magnetic Co1−xMnxCl2·H2O

Autor: G. S. Coker, Gary C. DeFotis, H. Aruga Katori, D. K. Havey

Publikováno v: Physica B: Condensed Matter. 336:252-260

Heat capacity measurements from 0.6 to 40 K are reported for various compositions of mixed magnetic Co1−xMnxCl2·H2O. For x=0.40–0.80 only broad maxima in the heat capacity appear. For x=0.90 a sharp peak is seen, at 1.727±0.005 K, but is not id

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b8d2da6143b3b0c7c3fe2afbe02d60df
https://doi.org/10.1016/s0921-4526(03)00172-8

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Application of precise line shape measurements to determine the vapor pressure of ice in the temperature range from 0 to −70° C

Autor: K. Bielska, D. K. Havey, G. E. Scace, D. Lisak, J. T. Hodges, John Lewis, Adriana Predoi-Cross

Publikováno v: AIP Conference Proceedings.

We performed spectroscopic measurement of the vapor pressure of ice. We describe an experimental method that enables such a measurement over a wide temperature range that covers the change of the vapor pressure of ice by a few orders of magnitude. Ou

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a03985a08814233f0487e874e33786da
https://doi.org/10.1063/1.3517549

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