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Surface second sound in superfluid helium /Shen, Sin-Yan January 1973 (has links)
No description available.
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Cooling liquid ³He below 1 mK by nuclear demagnetization /Muething, Kevin Albert January 1979 (has links)
No description available.
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A Crystat for Determinations of the Latent Heat of Liquid HeliumRoeder, Robert 10 1900 (has links)
A cryostat has been constructed for the determination of latent heat of vaporization of liquid helium at temperatures from the critical temperature (5.2°K) to below the A point (2.2°K). Some details of the apparatus, hints on low temperature technique and suggestions for future equipment are
presented, together with results of some experiments on the apparatus. / Thesis / Master of Science (MS)
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The geology of the Pinta Dome-Navajo Springs helium fields, Apache County, ArizonaDunlap, Richard Edwin, 1943- January 1969 (has links)
No description available.
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Theoretical studies of possible supersolid helium 4 and Boson Systems in optical latticesZhuang, Huaibin., 庄懷玢. January 2007 (has links)
published_or_final_version / abstract / Physics / Doctoral / Doctor of Philosophy
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Ballistic excitation scattering processes in superfluid '3He-B and spin-lattice relaxation in copper down to 7#mu#KEnrico, Michael Paul January 1995 (has links)
No description available.
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Transport and spin dynamics in dilute '3He-'4He solutions in high magnetic fieldsNaish, Josephine H. January 1997 (has links)
No description available.
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Alinhamento Iônico na fotoionização do átomo de hélio por luz polarizada / Alignment and photoionization of helium atomFerreira, Cláudia Pio 29 August 1997 (has links)
Neste trabalho, descrevemos os conceitos de alinhamento e orientação baseados no formalismo de Fano e Macek e estudamos a fotoionização do estado fundamental do átomo de Hélio. Para isso usou-se uma função de onda aproximada obtida a partir da diagonalização do operador de Gailitis- Damburg. A anisotropia do sistema formado após a colisão foi caracterizada através do cálculo da densidade eletrônica do íon e através do tensor de alinhamento e do vetor de orientação. O comportamento destes parâmetros para as transições n? -> 1s e n->n-1 em função de n (número quântico principal do íon) foi graficado para as duas simetrias relevantes, 1P° e 3P°. Observamos que o alinhamento máximo do sistema, em relação ao eixo de maior simetria definido como sendo o eixo z ocorre no limite de Wannier (n-> ?). Nesta situação o elétron iônico se encontra ao longo do eixo z para a simetria 3 P° e perpendicular ao eixo z para a simetria 1 P°. Esse fenômeno é causado pela interação elétron-elétron / In this work we describe the concepts of aligrnment and orientation based on the formalism of Fano and Macek formalism and we study the photoionization of the Helium atom ground state. We have used an approximate wave function obtained from the diagonalization of the Gailitis- Damburg operator. The anisotropy of the system formed after the colision was measured through the calculation of the ion electronic density and also by the use of the alignment tensor and orientation vector. The behaviour of these parameters for the transitions np ->1s and n ->n-1 as a function of n (the principal quantum number of the ion) was plotted for both the relevant symmetries, 1 P° and 3 P°. We have observed that the maximum alignment of the system, with respect to the dominant symmetry axis defined as the z axis, occurs in the Wannier threshold (n->?). This leads to the alignment of the ionic electron along the z axis for the 3 P°symmetry, and orthogonal to the z axis for the 1P° symmetry. This phenomenom is caused by the electron-electron Ínteraction.
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Single electron transfer cross sections for carbon, nitrogen, oxygen, and fluorine ions incident on heliumDillingham, Thomas Randall January 2011 (has links)
Photocopy of typescript. / Digitized by Kansas Correctional Industries
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Analysis, modification and improvement of performance of a closed, regenerative, reciprocating Brayton cycle engine.Lee, Kangpil January 1978 (has links)
Thesis. 1978. Ph.D.--Massachusetts Institute of Technology. Dept. of Mechanical Engineering. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING. / Vita. / Includes bibliographical references. / Ph.D.
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