Properties of the GQR from the 40Ca(3He, 3He'α)36Ar and 40Ca(3He, 3He'p)39K reactions

A. Moalem

doi:10.1016/0375-9474(77)90508-5

Properties of the GQR from the ⁴⁰Ca(³He, ³He'α)³⁶Ar and ⁴⁰Ca(³He, ³He'p)³⁹K reactions

A. Moalem

Department of Physics

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

16 Scopus citations

Abstract

We discuss the possibility of extracting spin and parity of the giant quadrupole resonance from angular correlations of p- and α-particles from the reactions ⁴⁰Ca(³He, ³He' p)³⁹K and ⁴⁰Ca(³He, ³He' α)³⁶Ar. Both of these processes were reported previously to proceed via two intermediate resonances at E_x ≈ 14.5 and ≈ 18.0 MeV in ⁴⁰Ca. The α₀ correlations corresponding to the decay of these resonances are found to be consistent with simple calculations based on the assumption of a two-step mechanism where the reaction proceeds via virtual excitation of a collective 2⁺ state in ⁴⁰Ca and its subsequent decay. The angular correlations exhibit significant departure from the reflectional symmetry of Bohr.

Original language	English
Pages (from-to)	461-468
Number of pages	8
Journal	Nuclear Physics A
Volume	281
Issue number	3
DOIs	https://doi.org/10.1016/0375-9474(77)90508-5
State	Published - 9 May 1977

Keywords

Nuclear Reactions

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1016/0375-9474(77)90508-5

Cite this

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title = "Properties of the GQR from the 40Ca(3He, 3He'α)36Ar and 40Ca(3He, 3He'p)39K reactions",

abstract = "We discuss the possibility of extracting spin and parity of the giant quadrupole resonance from angular correlations of p- and α-particles from the reactions 40Ca(3He, 3He' p)39K and 40Ca(3He, 3He' α)36Ar. Both of these processes were reported previously to proceed via two intermediate resonances at Ex ≈ 14.5 and ≈ 18.0 MeV in 40Ca. The α0 correlations corresponding to the decay of these resonances are found to be consistent with simple calculations based on the assumption of a two-step mechanism where the reaction proceeds via virtual excitation of a collective 2+ state in 40Ca and its subsequent decay. The angular correlations exhibit significant departure from the reflectional symmetry of Bohr.",

keywords = "Nuclear Reactions",

author = "A. Moalem",

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T1 - Properties of the GQR from the 40Ca(3He, 3He'α)36Ar and 40Ca(3He, 3He'p)39K reactions

AU - Moalem, A.

N1 - Funding Information: t Supported is part by the National Science Foundation.

PY - 1977/5/9

Y1 - 1977/5/9

N2 - We discuss the possibility of extracting spin and parity of the giant quadrupole resonance from angular correlations of p- and α-particles from the reactions 40Ca(3He, 3He' p)39K and 40Ca(3He, 3He' α)36Ar. Both of these processes were reported previously to proceed via two intermediate resonances at Ex ≈ 14.5 and ≈ 18.0 MeV in 40Ca. The α0 correlations corresponding to the decay of these resonances are found to be consistent with simple calculations based on the assumption of a two-step mechanism where the reaction proceeds via virtual excitation of a collective 2+ state in 40Ca and its subsequent decay. The angular correlations exhibit significant departure from the reflectional symmetry of Bohr.

AB - We discuss the possibility of extracting spin and parity of the giant quadrupole resonance from angular correlations of p- and α-particles from the reactions 40Ca(3He, 3He' p)39K and 40Ca(3He, 3He' α)36Ar. Both of these processes were reported previously to proceed via two intermediate resonances at Ex ≈ 14.5 and ≈ 18.0 MeV in 40Ca. The α0 correlations corresponding to the decay of these resonances are found to be consistent with simple calculations based on the assumption of a two-step mechanism where the reaction proceeds via virtual excitation of a collective 2+ state in 40Ca and its subsequent decay. The angular correlations exhibit significant departure from the reflectional symmetry of Bohr.

KW - Nuclear Reactions

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DO - 10.1016/0375-9474(77)90508-5

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