Elsevier

Nuclear Physics A

Volume 545, Issues 1–2, 3 August 1992, Pages 347-361
Nuclear Physics A

Correlations between pairs of particles and fragments from 40Ar reactions of 7–34 A MeV

https://doi.org/10.1016/0375-9474(92)90475-YGet rights and content

Abstract

For the reactions 7–34 A MeV 40Ar + natAg, careful measurements have been made of the average transverse momenta for α-particle pairs at a laboratory angle of 67°. They exhibit small but distinct shifts for different relative azimuthal angles Δϕ. Detection on the same side of the beam (Δϕ ≈ 24°) yields a smaller average transverse momentum or energy than on the opposite side (Δϕ ≈ 168°). These small shifts are analyzed with a recoil model to extract the average mass of the first α-particle emitter, i.e. A = 130 ± 10 to 115 ± 10 for reactions of 107,9Ag with 40Ar for 7 and 34 A MeV respectively. The overall pattern suggests incomplete fusion with formation of a hot thermalized composite nucleus and its evaporationlike decay.

References (13)

  • E. Suraud et al.

    Prog. Nucl. Part. Sci.

    (1989)
  • D. Drain et al.

    Nucl. Inst. and Meth. Phys. Res. Sec.

    (1989)
  • W.G. Lynch et al.

    Phys. Lett.

    (1982)
  • B.B. Back et al.

    Phys. Rev.

    (1980)
  • D.H. Boal et al.

    Rev. Mod. Phys.

    (1990)
  • T. Ethvignot et al.

    Phys. Rev.

    (1991)
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