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Showing 1 to 11 of 11 for “"tagged photons"”.
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Compton scattering from the deuteron at intermediate energies
… cross sections for the scattering of tagged photons from a liquid deuterium target at $E\gamma$ = 50 MeV and scattering angles of 50$\sp\circ$, 75$\sp\circ$, 110$\sp\circ$ and 140$\sp\circ$ and at $E\gamma$ = 70 MeV and scattering angles of 60$\sp\circ$ and 135$\sp\circ$. The use of …
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The proton Compton effect: A measurement of the electric and magnetic polarizabilities of the proton
… proton. The cross sections were measured using tagged photons spanning 32 through 72 MeV in energy. In this energy range, the forward scattering cross section is well constrained by model-independent theory and was measured to check the systematics of our experimental and data reduction …
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Photon scattering from 40Ca and 39K up to 14 MeV
… was surveyed from 6.6 to 13.6 MeV in 40 Ca using tagged photons of resolution 60 to 200 keV and a NaI scintillation detector. Strength was seen at 6.9 and 10.3 MeV. The strength at 10.3 MeV was assumed to be due to a single line, and angular distribution and resonant absorption experiments were …
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Compton scattering from the proton below pion threshold: A measurement of the electric and magnetic polarizabilities of the proton
… 90$\sp\circ$ and 135$\sp\circ$, using 70-100 MeV tagged photons, and simultaneously using 100-150 MeV untagged photons, in order to determine the electric and magnetic polarizabilities. The 135$\sp\circ$ cross section is sensitive to the difference of the electric and magnetic polarizabilities, …
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Photon scattering from 16O above the giant dipole resonance
… of 160 was measured at 45° and 135° using tagged photons with energies between 27 MeV and 64 MeV. These data were combined with previously measured photon scattering differential cross sections and total photoabsorption cross sections to determine the isovector E2 strength and to measure …
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Measurement of the isovector giant quadrupole resonance in 208Pb using eleastic polarized photon scattering
This experiment used highly polarized tagged photons to measure polarization asymmetries for elastic scattering in 208Pb in the energy region of the isovector giant quadrupole resonance (IVGQR). These measurements were performed at excitation energies between 16 and 30 MeV. Photons with enhanced …
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Resonant elastic photon scattering from the nuclei 88Sr, 89Y, and 90Zr
… sections for natural targets were measured using tagged photons of resolution 60 to 150 keV and a NaI scintillation detector. Total cross sections were inferred from the elastic cross sections using assumptions of level density, distribution of widths, and average total width. Nuclear resonance …
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Measurement of Exclusive Photo-Production of K+ Σ*- Quasi-Free off Neutrons In Deuterium
… run period from December 2004 to February 2005. Tagged photons with energies from 1.5 to 5.5 GeV are measured in coincidence with K <sup>+</sup> p π<sup>-</sup>π<sup>-</sup> in the spectrometer for this channel. After careful detector calibration and developing a new particle identification …
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Ultrasound-encoded optical tomography and time-reversed ultrasonically encoded optical focusing
… with improved detection efficiency of ultrasound-tagged photons. We also applied spectral-hole burning: SHB) aided detection in ultrasound-modulated optical tomography: UOT) to image optical heterogeneities in thick tissue-mimicking phantom samples and chicken breast tissue. The efficiency of SHB …
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Study of the Two Pion Photoproduction On Deuterium
… provide unique and coherent results from tagged photons over a broad range of energy, and represent the only two pion production data above 5 GeV at this present time. We found that the data produced good comparable single-differentials cross sections to other existing CLAS (gll dataset) …
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Elastic photon scattering from 4He between 23 and 73 MeV
… 23 and 73 MeV using the University of Illinois tagged photon facility. The principal contributions to the scattering in this energy range are the nuclear giant resonances at lower energies and the coherent scattering from bound nucleons and nucleon pairs at higher energies. The data collected in …