Shape of the 4.438 MeV γ-ray line of 12C from proton and α-particle induced reactions on 12C and 16O

J. Kiener, N. de Séréville, and V. Tatischeff
Phys. Rev. C 64, 025803 – Published 29 June 2001
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Abstract

We calculated in detail the angular distribution of γ rays and the resulting shape of the γ-ray line produced by the nuclear deexcitation of the 4.439 MeV state of 12C following proton and α-particle interactions with 12C and 16O in the energy range from threshold to 100 MeV per nucleon, making use of available experimental data. In the proton energy range from 8.6 to 20 MeV, the extensive data set of a recent accelerator experiment on γ-ray line shapes and angular distributions was used to deduce parametrizations for the γ-ray emission of the 2+, 4.439 MeV state of 12C following inelastic proton scattering off 12C and proton induced spallation of 16O. At higher proton energies and for α-particle induced reactions, optical model calculations were the main source to obtain the needed reaction parameters for the calculation of γ-ray line shapes and angular distributions. Line shapes are predicted for various interaction scenarios of accelerated protons and α particles in solar flares.

  • Received 28 February 2001

DOI:https://doi.org/10.1103/PhysRevC.64.025803

©2001 American Physical Society

Authors & Affiliations

J. Kiener, N. de Séréville, and V. Tatischeff

  • CSNSM, IN2P3-CNRS et Université Paris-Sud, Bâtiments 104 et 108, F-91405 Campus Orsay, France

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Issue

Vol. 64, Iss. 2 — August 2001

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