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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 261 to 270 of 1044 (0.044 seconds)Spelling suggestions: "subject:"high energy fhysics"" "subject:"high energy ephysics""
| 261 |
Van de Graaff based positron source productionLund, Kasey Roy 04 November 2015 (has links)
<p> The anti-matter counterpart to the electron, the positron, can be used for a myriad of different scientific research projects to include materials research, energy storage, and deep space flight propulsion. Currently there is a demand for large numbers of positrons to aid in these mentioned research projects. There are different methods of producing and harvesting positrons but all require radioactive sources or large facilities. Positron beams produced by relatively small accelerators are attractive because they are easily shut down, and small accelerators are readily available. </p><p> A 4MV Van de Graaff accelerator was used to induce the nuclear reaction <sup> 12</sup>C(d,n)<sup>13</sup>N in order to produce an intense beam of positrons. 13N is an isotope of nitrogen that decays with a 10 minute half life into <sup>13</sup>C, a positron, and an electron neutrino. This radioactive gas is frozen onto a cryogenic freezer where it is then channeled to form an antimatter beam. The beam is then guided using axial magnetic fields into a superconducting magnet with a field strength up to 7 Tesla where it will be stored in a newly designed Micro-Penning-Malmberg trap. </p><p> Several source geometries have been experimented on and found that a maximum antimatter beam with a positron flux of greater than 0.55×10<sup> 6</sup> e+s<sup>-1</sup> was achieved. This beam was produced using a solid rare gas moderator composed of krypton. Due to geometric restrictions on this set up, only 0.1-1.0% of the antimatter was being frozen to the desired locations. Simulations and preliminary experiments suggest that a new geometry, currently under testing, will produce a beam of 107 e+s<sup>-1</sup> or more.</p>
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| 262 |
Studies in energy loss of heavy charged particles for neutron dosimetryWilliamson, J. January 1974 (has links)
No description available.
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| 263 |
A theoretical study of charge transfer collsisions between positive ions at slow relative speedsHardie, David John Webster January 1981 (has links)
No description available.
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| 264 |
Polarised deep inelastic muon-proton scattering at 200GEV/CJones, Timothy John January 1986 (has links)
No description available.
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| 265 |
A measurement of triple gauge couplings with DELPHI at LEP2Tobin, Mark January 2002 (has links)
No description available.
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| 266 |
A measurement of the structure function of the proton, Fâ†2(x, Q'2), at low Bjorken-xMartin, Roland January 1994 (has links)
No description available.
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| 267 |
Real time HEP applications using T9000 transputers, links and switchesHeeley, Roger January 1996 (has links)
No description available.
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| 268 |
A study of the CP amplitudes in the decay Kdeg->#pi#'+#pi#'-#pi#'d'e'gPinto da Cunha, Jose Lopes January 1994 (has links)
No description available.
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| 269 |
A study of strange and charm particle production in heavy quark decays of the #ZETA#deg boson using the DELPHI detector at LEPCampion, Robert Anderson January 1995 (has links)
No description available.
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| 270 |
Heavy meson spectroscopy on a latticeGriffiths, L. A. January 1984 (has links)
No description available.
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