Measurements of nuclear γ-ray line emission in interactions of protons and α particles with N, O, Ne, and Si

H. Benhabiles-Mezhoud, J. Kiener, J.-P. Thibaud, V. Tatischeff, I. Deloncle, A. Coc, J. Duprat, C. Hamadache, A. Lefebvre-Schuhl, J.-C. Dalouzy, F. de Grancey, F. de Oliveira, F. Dayras, N. de Séréville, M.-G. Pellegriti, L. Lamia, and S. Ouichaoui
Phys. Rev. C 83, 024603 – Published 7 February 2011
PDFHTMLExport Citation

Abstract

γ-ray production cross sections have been measured in proton irradiations of N, Ne, and Si and α-particle irradiations of N and Ne. In the same experiment we extracted also line shapes for strong γ-ray lines of O16 produced in proton and α-particle irradiations of O. For the measurements gas targets were used for N, O, and Ne and a thick foil for Si. All targets were of natural isotopic composition. Beams in the energy range up to 26 MeV for protons and 39 MeV for α particles were delivered by the Institut de Physique Nucléaire–Orsay tandem accelerator. The γ rays were detected with four high-purity Ge detectors in the angular range 30° to 135°. We extracted 36 cross-section excitation functions for proton reactions and 14 for α-particle reactions. For the majority of the excitation functions no other data exist to our knowledge. Where comparison with existing data was possible, usually a very good agreement was found. It is shown that these data are very interesting for constraining nuclear reaction models. In particular, the agreement of cross section calculations in the nuclear reaction code talys with the measured data could be improved by adjusting the coupling schemes of collective levels in the target nuclei N14, Ne20,22, and Si28. The importance of these results for the modeling of nuclear γ-ray line emission in astrophysical sites is discussed.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
5 More
  • Received 8 November 2010

DOI:https://doi.org/10.1103/PhysRevC.83.024603

© 2011 American Physical Society

Authors & Affiliations

H. Benhabiles-Mezhoud, J. Kiener*, J.-P. Thibaud, V. Tatischeff, I. Deloncle, A. Coc, J. Duprat, C. Hamadache, and A. Lefebvre-Schuhl

  • Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), CNRS-IN2P3 et Université Paris-Sud, 91405 Orsay Campus, France

J.-C. Dalouzy, F. de Grancey, and F. de Oliveira

  • GANIL, CEA/DSM-CNRS/IN2P3, Caen, France

F. Dayras

  • CEA, LIST, 91191 Gif-sur-Yvette CEDEX, France

N. de Séréville and M.-G. Pellegriti

  • Institut de Physique Nucléaire (IPN), CNRS-IN2P3 et Université Paris-Sud, 91400 Orsay, France

L. Lamia

  • INFN—Laboratori Nazionali del Sud, via S. Sofia 62, 95125 Catania, Italy

S. Ouichaoui

  • USTHB, Faculté de Physique, Boîte Postale 32, El-Alia, 16111 Bab Ezzouar, Algiers, Algeria

  • *jurgen.kiener@csnsm.in2p3.fr
  • Present address: INFN—Laboratori Nazionali del Sud, via S. Sofia 62, 95125 Catania, Italy.

Article Text (Subscription Required)

Click to Expand

Supplemental Material (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 83, Iss. 2 — February 2011

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review C

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×