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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
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Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 191 to 200 of 4745 (0.047 seconds)Spelling suggestions: "subject:"astronomy"" "subject:"gatronomy""
| 191 |
PRECISION MEASUREMENTS OF THE NEUTRON ELECTRIC FORM FACTOR AT HIGH MOMENTUM TRANSFERSKolarkar, Ameya Suresh 01 January 2008 (has links)
The neutron, although electrically neutral, is composed of elementary charged particles and as a result, possesses a charge distribution within. The charge distribution can be studied by measuring a quantity called the neutron electric form factor, GnE. Experiment E02-013 at Jefferson Lab’s Hall A measured GnE at high four-momentum transfer values of Q2 = 1.2, 1.7, 2.5 and 3.4 (GeV/c)2 in double polarized semi-exclusive 3He(e, e'n) scattering in quasi-elestic kinematics by measuring the transverse asymmetry AT of the cross section.
The neutron electric form factor is essential to know for a variety of reasons. Results from the recent Jefferson Lab experiment on the proton revealed interesting features at these momentum transfers, whereas no accurate data for the neutron is available. Also the recent development in Generalized Parton Distributions (GPDs) necessitates the need for precise values for GnE in Q2 range between 1 and 10 (GeV/c)2; they appear as limiting conditions for certain GPD functions, for example, to constrain spin-flip GPDs. The experiment used the polarized 3He target and the polarized CEBAF electron beam at energies of about 1.52, 2.08, 2.64 and 3.29 GeV. The electrons were detected in the BigBite spectrometer and the neutrons in a large array of scintillators in coincidence with the electrons.
In this dissertation, we report a preliminary result, GnE = 0.03457 ± 0.007239 at Q2 = 1.7 (GeV/c)2.
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| 192 |
A foray into the realm of cosmologyMagueijo, J. C. R. January 1994 (has links)
No description available.
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| 193 |
A bright galaxy catalogue and redshift survey in the southern skyLoveday, Jonathan Nicholas January 1989 (has links)
No description available.
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| 194 |
Quasars and the formation of galactic nucleiHaehnelt, Martin January 1994 (has links)
No description available.
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| 195 |
Measuring the Hubble constant via the Sunyaev-Zel'dovich effectGrainge, Keith January 1996 (has links)
No description available.
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| 196 |
Systematic effects in microwave background observationsChurch, Sarah Elizabeth January 1990 (has links)
No description available.
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| 197 |
The analysis of quasar absorption systemsCooke, Andrew J. January 1994 (has links)
No description available.
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| 198 |
Observational manifestations of gravitational lensesCorrigan, Ruth T. January 1992 (has links)
No description available.
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| 199 |
Observed and predicted data in radio astrometric observationsAndrei, Alexandre Humberto January 1988 (has links)
No description available.
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| 200 |
Observing the microwave backgroundWaymont, David Keith January 1988 (has links)
No description available.
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