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Showing 1 to 20 of 34 for “"Resonance region"”.
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A new unresolved resonance region methodology
… probability tables in the Unresolved Resonance Region (URR) has been developed. This new methodology is an extensive modification of the Single-Level Breit-Wigner (SLBW) resonance-pair sequence method commonly used to generate probability tables in the URR. Using a Monte Carlo process, …
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Pion photoproduction in the (3,3) resonance region
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Physics, 1980.
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Direct pion-nucleus interactions in the resonance region
… reactions of pions with nuclei in the energy region of the πN(3,3) resonance are examined in the eikonal formalism. In particular, the angular and energy dependence of the elastic scattering of πsup(+-) from the calcium isotopes 40Ca, 48Ca is studied, using a detailed phenomenological …
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Exclusive π- Electro-Production From the Neutron in the Resonance Region
<p>The study of baryon resonances is crucial to our understanding of nucleon structure. Although the excited states of the proton have been studied in great detail, there are very few data available for the neutron resonances because of the difficulty inherent in obtaining a free neutron target. To …
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Investigation of the giant resonance region of carbon with (electron,electron'photon)
… reaction for the study of giant resonances. The reaction mechanism of this purely leptonic probe is known since it is governed by quantum electrodynamics. Because the long wavelength approximation is applicable, for the emitted photon, the (e, e$\sp\prime\gamma$) reaction is …
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Resonance region neutronics of unit cells in fast and thermal reactors.
Thesis. 1977. Ph.D.--Massachusetts Institute of Technology. Dept. of Nuclear Engineering.
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Multi-nucleon pion absorption on helium in the delta resonance region
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1995.
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Investigation of the giant resonance region of 1̳2̳C with (e,e'[gamma])
… of the ( e, e'1) reaction for the study of giant resonances. The reaction mechanism of this purely leptonic probe is known since it is governed by quantum electrodynamics. Because the long wavelength approximation is applicable, for the emitted photon, the ( e, e'1) reaction is highly selective of …
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Inclusive pion single charge exchange in 4He in the [delta]-resonance region
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1994.
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Spin Structure Functions of the Deuteron Measured with CLAS in and Above the Resonance Region
<p>Spin structure functions of the nucleon in the region of large <em>x</em> and small to moderate <em>Q</em><sup>2</sup> continue to be of high current interest. The first moment of the spin structure function <em>g</em><sub>1</sub>, Γ<sub>1</sub>, goes through a rapid transition from the photon …
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Single and Double Spin Asymmetries for Pion Electro-Production From the Deuteron in the Resonance Region
… but there are discrepancies in the 2nd and 3rd resonance regions, as well as at forward angles</p>
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Study of transverse excitations in the giant resonance region of 236U using the (e,e'f) reaction.
We measured 236U(e,e'f) coincidence cross sections at six values of the momentum transfer (qeff ~ 0.50, 0.72, 0.84, 0.95, 0.97 and 1.16 fm-1 ) at both forward (Oe = 50°, 75° , 110°) and backward angles (Oe = 160°), over an excitation energy range from 2 to 18 MeV. The backward angle data were taken …
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Coupled differential and integral data analysis for improved uncertainty quantification of the ⁶³,⁶⁵Cu cross section evaluations
… criticality safety. The current standard for the resonance evaluation of the two copper isotopes, ⁶³,⁶⁵Cu, has been determined to result in poor modeling performance. Therefore a new resonance evaluation of the two copper isotopes is vital to nuclear criticality safety applications. Performing a …
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Eta photoproduction study with the upgraded Glasgow tagger at MAMI
… The existence and properties of some nucleon resonances are well established, but many more are still debated, meriting much theoretical and experimental attention. The proximity and widths of such excited states result in difficulties in separating contributions from individual resonances. …
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Use of simple-harmonic forces in the non-relativistic quark model
… band structure displayed by the known N* resonances, The observed spectrum is similar to that predicted by a paraquark harmonic-oscillator shell model. ""Exact three-body Schroedinger wave functions are used to compute the N~partial decay widths, assuming the pion emission takes place via …
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A Monte Carlo calculation of the resonance escape probability of thorium in a homogeneous reactor
… to develop a method !or determining the resonance escape probability of homogeneous reactors containing aqueous solutions of a resonance absorber. TH(NO₃)₄ was selected as a salt since it is readily dissolvable in water. Even at the highest concentration, the atomic densities of thorium …
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Spin structure of the proton and the Q² evolution of the Gerasimov-Drell-Hearn integral
… functions were studied with precision in the resonance region. The data indicate that a dramatic change in the spin structure occurs between the deep inelastic high Q2 region and the region of low Q2 where photons become nearly real.
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Measurement of the Photon Beam Asymmetry in <i>γP</i> → <i>K</i><sup>+</sup>Σ<sup>0</sup> at <i>E<sub>γ</sub></i> = 8.5 GeV with GlueX
… and as a single value for the low <em>u</em> region. These are the first exclusive measurements of the photon beam asymmetry Σ in this reaction at energies above the baryon resonance region. For the <em>t</em>-channel, results are close to unity and show that the reaction is dominated by the …
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Development of a Novel Controllable Seismic Isolation System Based on Negative Stiffness Concept
… in reducing the transmissibility during the resonance region without increasing that in the high-frequency region. The controllable damping is then innovatively introduced to the ASNSD to improve its adaptability and robustness to various earthquakes. The developed ASNSD with feedback control …
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Inclusive scattering of polarized electrons from polarized protons in the Delta-excitation region with BLAST
… scattering from the elastic to the nucleon resonance region for hydrogen and deuterium using a longitudinally polarized electron beam at a beam energy of 850 MeV stored in the MIT-Bates South Hall Ring, and polarized internal gas targets of hydrogen and deuterium. There are several reasons …
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