Angular correlation studies of intermediate width structures in 16O + 12C

doi:10.1016/0370-2693(79)90553-7

Physics Letters B

Volume 87, Issue 4, 19 November 1979, Pages 354-358

https://doi.org/10.1016/0370-2693(79)90553-7 Get rights and content

Abstract

An angular correlation technique has been utilized to study the spins of several intermediate width resonances in the inelastic scattering of ¹⁶O + ¹²C in the range 19 ⩽ E_cm ⩽ 23 MeV. An analysis of the correlations and previously reported angular distributions strongly indicates that interpretations of these structures in terms of a single rotational band are inadequate.

References (19)

P. Sperr
Phys. Lett.
(1975)
B. Imanishi
Nucl. Phys.
(1969)
M. Golin
Phys. Lett.
(1978)
G. Michaud et al.
Phys. Lett.
(1969)
O. Tanimura et al.
Phys. Lett.
(1979)
Z. Berant
Nucl. Phys.
(1971)
L.K. FiField
D. Shapira et al.
Phys. Lett.
(1977)
F.G. Resmini et al.
Phys. Rev.
(1977)
R.E. Malmin et al.
Phys. Rev.
(1978)

There are more references available in the full text version of this article.

Cited by (23)

The 8Be + 20Ne molecular resonances in the 12C + 16O collision
1995, Nuclear Physics, Section A
Excitation functions of the ¹²C(¹⁶O, ⁸Be)²⁰Ne reaction leading to some low-lying states in ²⁰Ne have been studied at E_c.m. = 22∼29 MeV. Some new resonances are identified with fluctuation analysis, and their spin and parity are determined. If we plot them on a E_c.m. vs. J(J + 1) plane together with resonances reported previously in the same reaction channel, they seem to constitute a rotational band which coincides with the elastic band of the $^{8} Be +^{20} Ne$ system rather than with that of the $^{12} C +^{16} O$ system. Furthermore these resonances are found to persist in having almost negligible correlation in energy with those identified in the $^{12} C +^{16} O$ channels. A resonance at E_c.m. = 26.9 MeV which has been proposed by Eswaran et al. as a superdeformed shape isomeric state is not identified in the present data.
Investigation on some 16O + 12C resonances by the pn to d competition ratio technique
1994, Nuclear Physics, Section A
Energy levels of A = 21-44 nuclei (VII)
1990, Nuclear Physics, Section A
The experimentally determined properties of A = 21–44 nuclides are complied and evaluated with special emphasis on nuclear spectroscopy.
Separate tables for each of the nuclides reviewed present the available information about the following properties (in this order):
- •
  - excitation energies E_x,
- •
  - γ-ray branching ratios b(γ),
- •
  - γ-ray mixing ratios σ,
- •
  - lifetimes γ_m or widths Λ,
- •
  - neutron, proton, or α-particle resonances,
- •
  - partial widths,
- •
  - single-nucleon transfer reactions,
- •
  - beta-decay,
- •
  - arguments for spin and parity (J^π) and isospin (T) assignments.
For each nuclide a master table summarizing the “best” or adopted values for E_x, J^π; T and τ_m or Λ precedes the auxiliary tables listed above.
The review of each A-chain concludes with a discussion of isospin multiplets.
Figures are presented of the level schemes of all nuclei and, for each A-chain, an overview of the relative energies of the ground states and lowest analogue states of all nuclei in the chain.
A detailed study of the 12C + 16O fusion reaction at E<inf>cm</inf> = 19 to 24 MeV
1987, Nuclear Physics, Section A
Excitation functions of evaporation residues following the ¹²C + ¹⁶O reaction are investigated at E_cm = 19 to 24 MeV. At the resonances which have been previously identified in the ¹²C(¹⁶O, ⁸Be)²⁰Ne two-body channel, an order of magnitude larger resonance cross section is observed in the fusion channel than that in the two-body one and is shared among a few evaporation residues (²⁰Ne, ²³Na and ²⁴Mg). Here the resonance cross section is defined as the resonance part of the cross section on a resonance in an excitation function. It is found that for each resonance the relative intensity of the resonance cross sections of these residues is fairly well explained by assuming that they are coming from the decay of a compound nuclear resonance. It indiates that these intermediate resonances have a large probability to proceed to the formation of a more complicated configuration prior to its decay into exit channels. However, the resonant enhancement in the fusion channel is found to be weak at three energies (E_cm = 19.7, 22.0 and 22.6 MeV), where prominent resonant structures have been observed in inelastic channels. These distinct situations may be attributed to the magnitude of level density of the compound nucleus.
Quasimolecular states and nuclear structure: An experimental survey
1983, Nuclear Physics, Section A
Molecular resonances and spin alignment in 12C+16O inelastic scattering
1983, Physics Letters B

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Physics Letters B

Abstract

References (19)

Phys. Lett.

Nucl. Phys.

Phys. Lett.

Phys. Lett.

Phys. Lett.

Nucl. Phys.

Phys. Lett.

Phys. Rev.

Phys. Rev.

Cited by (23)

The <sup>8</sup>Be + <sup>20</sup>Ne molecular resonances in the <sup>12</sup>C + <sup>16</sup>O collision

Investigation on some <sup>16</sup>O + <sup>12</sup>C resonances by the pn to d competition ratio technique

Energy levels of A = 21-44 nuclei (VII)

A detailed study of the <sup>12</sup>C + <sup>16</sup>O fusion reaction at E<inf>cm</inf> = 19 to 24 MeV

Quasimolecular states and nuclear structure: An experimental survey

Molecular resonances and spin alignment in <sup>12</sup>C+<sup>16</sup>O inelastic scattering

Angular correlation studies of intermediate width structures in 16O + 12C☆

Abstract

Phys. Lett.

Nucl. Phys.

Phys. Lett.

Phys. Lett.

Phys. Lett.

Nucl. Phys.

Phys. Lett.

Phys. Rev.

Phys. Rev.

Angular correlation studies of intermediate width structures in ¹⁶O + ¹²C☆