Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 789 for “"Magnetic Fields"”.
-
Magnetic Fields in Protoplanetary Discs
… They are believed to be threaded by large-scale magnetic fields, which significantly affect their dynamics through processes such as the magneto-rotational instability (MRI), or the launching of a magnetic wind. Understanding the interplay between magnetic fields and protoplanetary disc structure …
-
Magnetic fields and stellar oscillations
… points to the possible role of a hidden, relic magnetic field. It is the goal of the work presented herein to explore the nature of the interactions between waves in deep stellar interiors (in particular, gravity waves) and magnetic fields of dynamically significant strengths, that it might …
-
Transport in chaotic magnetic fields
… environments are thought to contain force-free magnetic fields. The sine field is an example of a force-free, helical magnetic field, whose field lines are chaotic over the entire space. In this thesis, we examine the transport properties of magnetic field lines and particles in three related …
-
Critical magnetic fields of superconducting tungsten
… data, is 0.87 + .04 mJ/mole °K2. However, the magnetic field at the specimen is slightly altered by the nearby paramagnetic refrigerant- thermometer. An estimated correction applied to the data gives the new values Ho = 1.148 +/- .010 G, Tc = 15.37 +/- .17 moK, and gamma = 0.90 ± .06 mJ/mole …
-
Martensitic transformations in high magnetic fields.
Thesis: Sc. D., Massachusetts Institute of Technology, Department of Metallurgy and Materials Science, 1973
-
Charged-Particle Transport in Turbulent Magnetic Fields
… turbulence is common in astrophysical magnetic fields and plasmas. The determination of the transport of high-energy charged particles both parallel and perpendicular to the average magnetic field in such a system is of considerable interest. It is recognized that the turbulent magnetic …
-
Magnetohydrodynamic ship propulsion using multipole magnetic fields
Thesis: S.B., Massachusetts Institute of Technology, Department of Electrical Engineering, 1965
-
Magnetic fields in the early solar system
The first magnetic fields in the solar system were embedded in the ionized gas of the protoplanetary disk itself. Soon after, newly formed protoplanets may have harbored magnetic core dynamos. Paleomagnetic analysis of ancient samples permits direct constraints on these early solar system magnetic …
-
Relationship between photospheric magnetic fields and coronal activities
… known to be related to the evolution of surface magnetic fields. This dissertation studies the evolution of photospheric magnetic fields and flow fields and their relation to the properties of these two coronal emission components. The key issue in the study of the steady coronal emission is the …
-
A Method for Measuring Magnetic Fields in Superconductors
Made available in DSpace on 2015-05-12T17:12:14Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 5900538.PDF: 2610158 bytes, checksum: 513c754d8423e043128dd00dc407a535 (MD5) Previous issue date: 1958
-
Energy level structure of atoms in magnetic fields
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1991.
-
Genesis, dynamics, and dissipation of turbulent magnetic fields
… indicate that coherent, dynamically important magnetic fields are ubiquitous in the Universe. However, neither the origin problem—what are the physical mechanisms that generate the initial ``seed'' magnetic fields—nor the dynamo problem—how magnetic fields are amplified and sustained by …
-
An investigation of electromagnetic rig-generated strong magnetic fields
… to be capable of generating strong and static magnetic fields in various samples of magnetic materials. In the case of the first design, the sample would be placed in the central air space. In the second design, the sample would be placed in part of the 'jaws' of the 'C' shape. It was intended …
-
Magnetic fields near microstructured surfaces : application to atom chips
… processing, and studies of many-body systems. Magnetic trapping potentials with arbitrary geommetries are generated with atom chip by miniaturized current-carrying conductors integrated on a solid substrate. Atoms can be trapped and cooled to microKelvin and even nanoKelvin temperatures in such …
-
The origin and dynamic interaction of solar magnetic fields
… of the solar corona are dominated by the magnetic field which creates its structure. The magnetic field in most of the corona is ?frozen? to the plasma very effectively. The exception is in small localised regions of intense current concentrations where the magnetic field can slip through …
Page 1 of 40