Processes Contributing to the Continuum in the Inclusive Proton Spectrum; the Role of (proton, 2-PROTON) Reaction.

Details Processes Contributing to the Continuum in the Inclusive Proton Spectrum; the Role of (proton, 2-PROTON) Reaction. Processes Contributing to the Continuum in the Inclusive Proton Spectrum; the Role of (proton, 2-PROTON) Reaction.

May 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984phdt.......179s&link_type=abstract

Thesis (PH.D.)--INDIANA UNIVERSITY, 1984.Source: Dissertation Abstracts International, Volume: 46-01, Section: B, page: 0210.

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Scientific paper

Inclusive energy spectra of charged light particles produced in proton and alpha particle induced reactions have been studied extensively in recent years. A typical spectrum shows a prominent low energy evaporation peak and narrow peaks corresponding to discrete final states at its upper energy end. Between these two regimes lies a broad and relatively flat continuum. This latter region of the charged particle spectrum has most of the reaction cross section and is considered to arise partly from inelastic scattering to the nuclear continuum, partly from knockout reactions and partly from pre-equilibrium emission of charged particles from the highly excited nuclear continuum. To determine the relative contributions of various components to the continuum spectrum, charged-particle coincidence measurements were carried out. The particles were detected using two counter telescopes fixed to the right of the incident proton beam and four movable counter telescopes to the left of the beam. Different components were identified using kinematic or other expected characteristics of the coincidence data; the results are described in detail in this thesis. In particular, the experimental cross sections for the (p, 2p) knockout reaction are compared with theoretical calculations based on the Distorted Wave Impulse Approximation (DWIA). The DWIA is found to reproduce the shape and magnitude (within a factor of two) of the observed angular correlations over a 0-200 Mev/c range of the recoil momentum (P(,rec)). For higher values of P(,rec) the calculations exhibit striking deviations from the measurements. The DWIA thus appears to provide a reasonable description of the knock-out component of the continuum spectrum over a limited range of P(,rec).

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