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

Hiroyasu Ejiri; Yasuki Nagai; Hideyuki Sakai; Kazushige Maeda

doi:10.1143/JPSJ.49.2103

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

Hiroyasu Ejiri, Yasuki Nagai, Hideyuki Sakai, Kazushige Maeda

SCI - Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Pre-equilibrium deexcitation process for the ¹⁶⁴Dy(α, xnγ) reaction at E_α =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 kT_p =5 MeV and the equilibrium phase with the temperature of kT_e =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 language	English
Pages (from-to)	2103-2113
Number of pages	11
Journal	journal of the physical society of japan
Volume	49
Issue number	6
DOIs	https://doi.org/10.1143/JPSJ.49.2103
Publication status	Published - 1980 Jan 1

Keywords

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)

Access to Document

10.1143/JPSJ.49.2103

Cite this

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

abstract = "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.",

keywords = "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",

author = "Hiroyasu Ejiri and Yasuki Nagai and Hideyuki Sakai and Kazushige Maeda",

year = "1980",

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doi = "10.1143/JPSJ.49.2103",

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T1 - Pre-equilibrium deexcitation process for 164Dy(α, xnγ) reaction and angular momentum transfers

AU - Ejiri, Hiroyasu

AU - Nagai, Yasuki

AU - Sakai, Hideyuki

AU - Maeda, Kazushige

PY - 1980/1/1

Y1 - 1980/1/1

N2 - 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.

AB - 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.

KW - NUCLEAR REACTION Dy(±, xnγ) Er, x=4-8, E=90 MeV

KW - measured E, I, M, σ(E, θ), M, deduced preequilibrium properties, angular momentum removal, enriched targets, Ge(Li), NaI, NE 213

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