A comparison of the He(p, 2p)d and He(p, pd)p reactions

The ³He(p, 2p)d and ³He(p, pd)p reactions have been compared at three bombarding energies from 65 to 100 MeV. A comparison of plane wave impulse approximation calculations to the experimental data indicates that multiple scattering effects are large and energy dependent but that they primarily produce a uniform reduction in cross section. Although multiple scattering effects are large the ratio of the cross sections for the two reactions is in agreement with that predicted by the impulse approximation.     

Partial Differentiability of Invariant Splittings

A key feature of a general nonlinear partially hyperbolic dynamical system is the absence of differentiability of its invariant splitting. In this paper, we show that often partial derivatives of the splitting exist and the splitting depends smoothly on the dynamical system itself.     

Bands of nitrous oxide at 5.3 μm

Several bands of nitrous oxide occurring in the region of about 5.3 μm have been measured by using a high resolution vacuum infrared spectrograph. The molecular constants derived from the data have been given along with the basic data.     

The first example of palladium catalysed non-perfectly alternating copolymerisation of ethene and carbon monoxide

Non-alternating ethene-CO copolymerisation is catalysed by a new series of [P-O]Pd catalysts based on o-alkoxy derivatives of diphenylphosphinobenzene sulfonic acid.     

Stable ergodicity and julienne quasi-conformality

In this paper we dramatically expand the domain of known stably ergodic, partially hyperbolic dynamical systems. For example, all partially hyperbolic affine diffeomorphisms of compact homogeneous spaces which have the accessibility property are stably ergodic. Our main tools are the new concepts – julienne density point and julienne quasi-conformality of the stable and unstable holonomy maps. Julienne quasi-conformal holonomy maps preserve all julienne density points. Received June 14, 1999 / final version received October 25, 1999     

The C1 Connecting Lemma

Given a smooth flow and two orbits such that theω-limit set of the first meets theα-limit set of the second, can the flow be C¹-perturbed to make the orbits coincide? The answer is shown to be “not always.”