The (E, E''d) Reaction On He-4, Li-6, And C-12

R. ENT, B.L. BERMAN, H.P. BLOK, J.F.J. van den Brand, W.J. BRISCOE, M.N. HARAKEH, E. JANS, P.D. KUNZ, L. LAPIKAS

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Abstract

The (e, e''d) reaction has been measured on He-4, Li-6, and C-12. The theoretical description of this reaction is discussed both in a quasielastic cluster-knockout approach and in a microscopic approach. Results of these descriptions are compared with the measured (e, e''d) cross sections as a test of the deuteron-knockout mechanism and of the possibility of extracting nuclear-structure information. It is shown that a quasielastic approach is valid only in limiting cases like the Li-6(e, e''d) reaction. The excitation of a T = 1 state in the C-12(e, e''d)B-10 reaction can be described in the microscopic approch as a transition from a S-0(1) pn cluster to a S-1(3) deuteron. The form of the momentum distributions extracted from the data within a semi-microscopic approach, representing the motion of the pn cluster in the nucleus, is in global agreement with model calculations. However, the dependence of the measured cross sections as a function of momentum transfer is not well described, which results in a sizable uncertainty in the absolute normalization of the extracted momentum distributions.
Original languageEnglish
Pages (from-to)93-133
Number of pages41
JournalNuclear Physics A
Volume578
Issue number1-2
DOIs
Publication statusPublished - 3 Oct 1994
Externally publishedYes

Keywords

  • NUCLEAR REACTIONS HE-4
  • 4-6
  • C-12(E,E''D)
  • E(CM) APPROXIMATE-TO-30-70 MEV
  • MEASURED REACTION-SIGMA VS MOMENTUM TRANSFER
  • SIGMA(THETA(E'')
  • E(E'')
  • THETA(D))
  • B-10 LEVELS DEDUCED SPECTROSCOPIC FACTORS
  • CLUSTER KNOCKOUT REACTIONS
  • ELECTRON-SCATTERING
  • MOMENTUM DISTRIBUTIONS
  • E,E''P REACTION
  • IMPULSE-APPROXIMATION
  • MAGNETIC SPECTROMETER
  • BREATHING CLUSTERS
  • OPTICAL-PROPERTIES
  • ALPHA-PARTICLE
  • OUT REACTIONS

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