Investigation of the quasi-free domain in deuteron-deuteron break-up using spin observables

R. Ramazani-Sharifabadi, M. T. Bayat, I. Ciepał, N. Kalantar-Nayestanaki, St Kistryn, A. Kozela, M. Mahjour-Shafiei, J. G. Messchendorp*, M. Mohammadi-Dadkan, A. Ramazani-Moghaddam-Arani, E. Stephan, H. Tavakoli-Zaniani

*Corresponding author for this work

Research output: Contribution to journalLetterAcademicpeer-review

Abstract

Precision measurements of vector and tensor analyzing powers of the 2H(d, dp)n break-up process for configurations in the vicinity of the quasi-free scattering regime with the neutron as spectator are presented. These measurements are performed with a polarized deuteron-beam with an energy of 65MeV/nucleon impinging on a liquid-deuterium target. The experiment was conducted at the AGOR facility at KVI using the BINA 4π-detection system. Events for which the final-state deuteron and proton are coplanar have been analyzed and the data have been sorted for various momenta of the missing neutron. In the limit of vanishing neutron momentum and at large deuteron-proton momentum transfer, the data agree well with the measured and theoretically predicted spin observables of the elastic deuteron-proton scattering process. The agreement deteriorates rapidly with increasing neutron momentum and/or decreasing momentum transfer from the deuteron beam to the outgoing proton. This study reveals the presence of a significant contribution of final-state interactions even at very small neutron momenta.

Original languageEnglish
Article number177
JournalEuropean Physical Journal A
Volume55
Issue number10
DOIs
Publication statusPublished - 1 Oct 2019
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2019, The Author(s).

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