22 research outputs found
Low energy () reactions in Ni and Cu nuclei using microscopic optical model
Radiative capture reactions for low energy protons have been theoretically
studied for Ni and Cu isotopes using the microscopic optical model. The optical
potential has been obtained in the folding model using different microscopic
interactions with the nuclear densities from Relativistic Mean Field
calculations. The calculated total cross sections as well as the cross sections
for individually low lying levels have been compared with measurements
involving stable nuclear targets. Rates for the rapid proton capture process
have been evaluated for astrophysically important reactions.Comment: To appear in Physical Review
Studies of the Response of the Prototype CMS Hadron Calorimeter, Including Magnetic Field Effects, to Pion, Electron, and Muon Beams
We report on the response of a prototype CMS hadron calorimeter module to
charged particle beams of pions, muons, and electrons with momenta up to 375
GeV/c. The data were taken at the H2 and H4 beamlines at CERN in 1995 and 1996.
The prototype sampling calorimeter used copper absorber plates and scintillator
tiles with wavelength shifting fibers for readout. The effects of a magnetic
field of up to 3 Tesla on the response of the calorimeter to muons, electrons,
and pions are presented, and the effects of an upstream lead tungstate crystal
electromagnetic calorimeter on the linearity and energy resolution of the
combined calorimetric system to hadrons are evaluated. The results are compared
with Monte Carlo simulations and are used to optimize the choice of total
absorber depth, sampling frequency, and longitudinal readout segmentation.Comment: 89 pages, 41 figures, to be published in NIM, corresponding author: P
de Barbaro, [email protected]