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We first investigate how the mass operator for symmetric and uncharged nuclear matter is modified in the presence of a Coulomb field and of neutron excess. Detailed calculations are performed with Reid's hard-core nucleon-nucleon interaction. They are carried out in the framework of the...
The Rh 103 , Pd 1 0 6 , 1 0 8 , and Ag 1 0 7 , 1 0 9 ( t , p ) reactions have been studied at a bombarding energy of 17 MeV. Excitation energies and enhancement factors were obtained for a number of levels up to about 2.5 MeV excitation in the residual nuclei. The L = 0 transitions observed...
The spectrum of Pb 205 is studied with the Pb 204 ( d , p ) transfer reaction at incident energies of 13.0 and 20.0 MeV. Angular distributions are obtained for 15 of the known single-hole fragments in Pb 205 below an excitation energy of 2.56 MeV. Spectroscopic strengths are extracted and these...
Nonsingular integral equations are derived for a class of multichannel scattering problems. NUCLEAR REACTIONS Scattering theory, integral equations for multi-channel scattering.
Cross sections for 1 f 7 2 neutron- and proton-transfer reactions on Ca 48 have been measured. A distorted-wave Born approximation analysis of these and other similar results for a Ca 40 target reveals isotope shifts of the 1 f 7 2 rms radii which are about 0.2 fm in magnitude and have opposite...
Ratios of pion-induced nucleon knockout cross sections are discussed utilizing a modified nucleon charge exchange model which takes into account nuclear structure effects on the effective number of nucleons and on the various probabilities for charge exchange. The availability of particle-stable...
A method is developed for clearly distinguishing experimentally between ( p , 2 p ) reactions which result from ( p , p ′ ) reactions followed by proton boiloff, and those in which the two protons are both emitted within ∼ 10 - 22 sec in a direct reaction (referred to as "double direct")....
The Sn 1 1 7 , 1 1 8 , 1 1 9 , 1 2 0 , 1 2 2 , 1 2 4 ( p , n ) cross sections were measured with ∼ 100-keV resolution for 2.6- to 7-MeV protons with systematic uncertainties of less than ± 1%. An exact sequence of broad maxima in the strength functions is observed with the energies at the...
The Kouri-Levin K -matrix formalism for multiparticle scattering is examined in the particular case of three-particle scattering. It is shown that in order for this method to generate transition amplitudes satisfying unitarity, much more stringent constraints must be imposed upon the K operators...
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