Pre-equilibrium deexcitation process for 164Dy(α, xnγ) reaction and angular momentum transfers

Hiroyasu Ejiri, Yasuki Nagai, Hideyuki Sakai, Kazushige Maeda

Research output: Contribution to journalArticlepeer-review


Pre-equilibrium deexcitation process for the 164Dy(α, xnγ) reaction at Eα =90 MeV was studied by means of γ-γ and neutron-γ coincidence method. Properties of the preequilibrium phase were deduced as a function of the neutron multiplicity x. The reaction process was analyzed in terms of the two-phase deexcitation process, the pre-equilibrium phase with the energy parameter (quasi-temperature) of kTp =5 MeV and the equilibrium phase with the temperature of kTe =1.2 MeV. Angular momenta removed by the decaying neutrons at the pre-equilibrium and equilibrium phases, together with the data of the γ-ray multiplicity, account for the angular momenta introduced by the projectile.

Original languageEnglish
Pages (from-to)2103-2113
Number of pages11
Journaljournal of the physical society of japan
Issue number6
Publication statusPublished - 1980 Jan 1


  • NUCLEAR REACTION Dy(±, xnγ) Er, x=4-8, E=90 MeV
  • measured E, I, M, σ(E, θ), M, deduced preequilibrium properties, angular momentum removal, enriched targets, Ge(Li), NaI, NE 213

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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