corner
corner
APS » Journals » Phys. Rev. Lett. » Volume 102 » Issue 23
< Previous Article | Next Article >

Phys. Rev. Lett. 102, 232501 (2009) [4 pages]

Mechanisms in Knockout Reactions

Download: PDF (274 kB) Buy this article Export: BibTeX or EndNote (RIS)

D. Bazin1,*, R. J. Charity2, R. T. de Souza3, M. A. Famiano4,1, A. Gade1,5, V. Henzl1, D. Henzlova1, S. Hudan3, J. Lee1, S. Lukyanov6,1, W. G. Lynch1,5, S. McDaniel1, M. Mocko7,1, A. Obertelli8,1, A. M. Rogers1, L. G. Sobotka2, J. R. Terry9,1, J. A. Tostevin10,1, M. B. Tsang1, and M. S. Wallace7,1
1National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
2Department of Chemistry, Washington University, St. Louis, Missouri 63130, USA
3Department of Chemistry, Indiana University, Bloomington, Indiana 47405, USA
4Department of Physics, Western Michigan University, Kalamazoo, Michigan 49008, USA
5Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
6FLNR/JINR, 141980 Dubna, Moscow region, Russia
7Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
8DAPNIA/SPhN, CEA Saclay, F-91191 Gif-sur-Yvette Cedex, France
9Department of Physics, Yale University, New Haven, Connecticut 06520, USA
10Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom

Received 6 January 2009; revised 8 April 2009; published 11 June 2009

We report the first detailed study of the relative importance of the stripping and diffraction mechanisms involved in nucleon knockout reactions, by the use of a coincidence measurement of the residue and fast proton following one-proton knockout reactions. The measurements used the S800 spectrograph in combination with the HiRA detector array at the NSCL. Results for the reactions 9Be(9C,8B+X)Y and 9Be(8B,7Be+X)Y are presented and compared with theoretical predictions for the two reaction mechanisms calculated using the eikonal model. The data show a clear distinction between the stripping and diffraction mechanisms and the measured relative proportions are very well reproduced by the reaction theory. This agreement adds support to the results of knockout reaction analyses and their applications to the spectroscopy of rare isotopes.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.102.232501
DOI:
10.1103/PhysRevLett.102.232501
PACS:
24.50.+g, 25.60.Dz, 25.60.Gc, 25.70.Hi

*bazin@nscl.msu.edu

 
< Previous Article | Next Article >