10 research outputs found
Exclusive 16O(γ,π-p) reaction in the Δ resonance region
We report the first exclusive (γ,π-p) measurements on a complex nucleus. The 16O(γ,π-p) reaction was measured at pion laboratory angles of 64° and 120°. Coincident protons were detected over the quasifree angular correlation range using a vertical array of seven plastic scintillator detectors spanning ±33° about the scattering plane. The cross sections are compared to factorized distorted-wave impulse approximation calculations; these provide a good description of the backward angle data, but are in serious disagreement with the forward angle data
Potential cross-border radiological consequences of accidents with a decommissioned non-defuelled nuclear submarine moored on the Kola Peninsula
Measurement of 16O(γ,n)15O at medium energies
Exclusive differential cross sections for the 16O(γ,n)15O process have been measured for Eγ=150, 200, and 250 MeV and θL=49°, 59°, and 88°. This measurement is the first of its type to be reported for the energy region above the pion production threshold. An uncollimated bremsstrahlung beam was incident on an H2O target, and neutrons were measured with a recoil proton spectrometer with resolution sufficient to identify the residual 15O ground state. The results are compared to (γ,p) data and to calculations including effects from meson exchange currents
Environmental risk assessment for two defence-related problems: Non-defuelled, decommissioned nuclear submarines; defence-related radioactive waste in Latvia. NATO/CCMS pilot study: Cross-border environmental problems emanating from defence-relatedinstallations and activities. Phase 2: 1995-1998. Final report. Vol. 4
ANALYZING POWER MEASUREMENTS FOR THE π+, π0 REACTION ON A POLARIZED 13C TARGET AT Tπ+ =163 MeV
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