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.
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Showing 1 to 20 of 39 for “"Deuterons"”.
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Low-energy protons from targets bombarded by 15-MeV deuterons
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1954.
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A pulsed ion source for a 250 Key Cockcroft-Walton accelerator
… source, capable of producing a pulsed beam of deuterons has been built for use with a Cockcroft-Walton accelerator. Pulsed deuterons striking a deuteron target produce neutrons in bursts thus allowing dynamic measurements of moderator and reactor core properties. Beam pulsing is accomplished by …
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NMR studies of acetylene adsorbed on supported platinum catalysts
… describes NMR measurements involving carbon-13, deuterons, and protons in acetylene ($\rm C\sb2H\sb2$) adsorbed at room temperature on supported platinum catalysts.
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Energy levels in certain light nuclei
… levels were obtained by bombarding C13 with deuterons. Energy levels in Be8 and Be9 were studied by observing resonances in the yield of product particles in the various reactions of Li6 and Li7 with deuterons. Since the two experiments are of such a different nature, this thesis will be …
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NMR studies of acetylene absorbed on supported platinum catalysts
… describes NMR measurements involving carbon-13, deuterons, and protons in acetylene (C2H2) adsorbed at room temperature on supported platinum catalysts. Measurements from 77""K to 158°K of the spin-lattice relaxation behavior of carbon-13 reveal multiple-exponential behavior. Calculations rule …
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The response of organic scintillators to neutrons of energy 14-63 MeV
… by pulse · shape dissimilation to be protons, deuterons, and alphas, respectively. The response (light output) of NE213 to protons, deuterons and alphas was measured as a function of energy. Furthermore, total cross sections for neutron-induced proton, deuteron, and alpha production from 12C …
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An in-situ accelerator-based diagnostic for plasma-material interactions science in magnetic fusion devices
… quadrupole accelerator to inject 0.9 MeV deuterons into the Alcator C-Mod tokamak. The tokamak magnetic fields in between plasma shots are used to steer the deuterons to PFCs where the deuterons cause high-Q nuclear reactions with low-Z isotopes ~5 [mu]m into the material. Scintillation …
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The neutron-deutron breakup cross section between 8 and 22 MeV
… breakup protons were separated from the recoil deuterons by pulse shape discrimination. A comparison of these measurements with recent calculations favours those performed with local potentials.
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Neutron induced alpha production from carbon between 18 and 22 MeV
… to separate the alphas and elastically scattered deuterons from the other reaction products. Published (n,d) elastic scattering data were used as a standard to obtain the alpha production cross sections. Comparison with available measurements shows good agreement
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Selective Deuteron Acceleration using Target Normal Sheath Acceleration
… of the dominant acceleration of ~MeV deuterons. 1D pseudo-Lagrangian calculations investigating the initial stages of ion acceleration with various levels of surface contamination are also presented.The first successful demonstration of selective deuteron acceleration by target normal …
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A determination of the effective thickness of a liquid deuterium target for a quasielastic scattering experiment
… by a fission ionization chamber. The scattered deuterons were detected with a Delta E - E (thin plastic scintillator - thick CsI calorimeter) telescope. The effective target thickness was determined to be larger than is thought physically possible. Possible reasons for the unphysical result are …
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Alpha emission from the interactions of 14-200 MeV neutrons on carbon-12
… was used to identify and separate alphas and deuterons from other reaction products. The feasibility of distinguishing different mechanisms for the ¹²C(n,n')3α reaction by means of PSD was also investigated.
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Quasifree knockout of charged particles from ⁴He with 100 MeV protons
… and 60°, in coincidence with secondary protons, deuterons, tritons or helions covering a wide range of angles on the opposite side of the beam, from -15° to -90° in plane, and from 0° to 30° out-of-plane. The purpose of the experiment was to explore the validity of the Distorted Wave Impulse …
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Polarization in neutron-deuteron scattering from 8 to 22 MeV
… anthracene scintillation crystal. Recoil deuterons from n-d elastic scattering within the crystal were studied and pulse shape discrimination (PSD) was used to determine the left-right asymmetry of the recoils. The experimental method depends on the fact that the PSD response of the …
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Aspects of a high intensity neutron source
… a neutron source model was developed for deuterons and protons incident on solid phase beryllium and lithium targets. This model was then validated against experimental results already available in literature. The model was found to adequately characterize the deuteron reactions, subject …
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Neutron-deuteron elastic scattering and three-nucleon force
… array of plastic scintillator bars, and recoil deuterons, detected by [delta] E-E (plastic scintillator - CsI) telescopes, were observed in coincidence. The resulting angular distributions for several incident neutron energies are compared with theoretical predictions and previous measurements …
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A Novel Neutron Recoil Spectrometer Concept Utilizing Heavy-Ion Recoils and Time- and Spatially-Resolved Sensor
… elastically scatter neutrons o↵ protons or deuterons, which are then magnetically analyzed to infer energy, this device works by elastically scattering neutrons in a nanometer-scale film of a higher-Z material. The resulting heavy ions are then measured on a time- and space-resolved …
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Polarization of D(d,n)He³ reaction neutrons
… a heavy ice target with an unanalyzed beam of deuterons from a Cockroft-Walton accelerator. The phase shifts of Meier, Scherrer, and Trumpy* were used to compute the induced polarization of carbon at an average neutron energy of 2.7 Mev. The observed asymmetries in scattering yielded neutron …
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