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The Fe 56 ( t → , p ) and Ni 58 ( t → , p ) reactions to unnatural partity levels have been studied at E t = 17 MeV. Two-step reaction calculations are reasonably successful in reproducing the principal features of the data. The predicted cross sections and analyzing powers exhibit a large...
We compare the West-Yennie method for the study of Coulomb-nuclear interference with a more accurate method based upon an exact solution for the phase shifts in the presence of nuclear and Coulomb interactions. Making use of nuclear amplitudes obtained in a previous study of pion- He 4 elastic...
The problem of a single quantal particle moving in a time-dependent external potential well is formulated specifically to emphasize and develop the fluid dynamical aspects of the matter flow. This idealized problem, the single-particle Schrödinger fluid, is shown to exhibit already a remarkably...
An approximate π NN vertex operator is used to compute π N phase shifts. NUCLEAR REACTIONS Theory of π NN vertex and π N elastic scattering.
The enhanced population of the 4.522 MeV state in Na 22 at E c . m . = 19.4 MeV in the C 12 ( C 12 , d ) Na 22 reaction is confirmed with the particle- γ coincidence technique. Deuteron- γ angular correlation results, lifetime measurements, and transmission coefficient calculations combine to...
The Faddeev-Lovelace equations have been solved for the A = 6 system with the use of new N - α separable interactions. The Li 6 spectrum is given and the ( d - α ) elastic scattering observables (angular distributions, vector and tensor polarizations) are calculated and compared with recent...
The Pu 238 half-life was measured at 87.71 ± 0.03 yr by observing the Pu 238 α -particle activity formed from the α decay of Cm 242 . Samples of Cm 242 were counted three times in a 262 day interval, leading to a Cm 242 half-life of 162.76 ± 0.04 days. Both values agree well with measurements...
As evidence of a phase transition of the interference between direct and inelastic multistep processes in two-neutron pickup reactions exciting the first 2 + state of spherical vibrational nuclei, a destructive interference has been observed in Pd A + 2 ( p , t ) Pd A ( 2 1 + ) reactions. A...
The internal pair decay of the O + 7.65-MeV state of C 12 has been observed in coincidence with inelastic protons from C 12 ( p , p ′ ) C 12 ( 7.65 ) , using a plastic scintillator of essentially 4 π sr solid angle. The branching ratio measured, Γ π Γ = ( 6.0 ± 1 . 1 ) × 10 - 6 , is in...
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