The reactions 16O(d, p)17O and 28Si(d, p)29Si initiated by vector-polarized deuterons

doi:10.1016/0375-9474(71)90053-4

Nuclear Physics A

Volume 172, Issue 3, 13 September 1971, Pages 663-672

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Abstract

The vector analyzing power has been measured for the reactions ¹⁶O(d, d)¹⁶O and ¹⁶O(d, p)¹⁷O leading to states in ¹⁷O at E_x = 0.0 and 0.87 MeV at a deuteron energy of 8 MeV. The vector analyzing power and the cross section for the ²⁸Si(d, p)²⁹Si reaction leading to states in ²⁹Si at E_x = 0.0, 1.27, 2.03, 2.43, 3.07, 3.62 and 4.08 MeV have been measured at a deuteron energy of 9 MeV. For l_n = 2 transitions, the vector analyzing power near the stripping peak is found to be negative for $j^{π} = 32^{+}$ and positive for $j^{π} = 52^{+}$ . The measurements on ¹⁶O(d, d)¹⁶O were analyzed in terms of the optical model. The (d, p) measurements are compared with DWBA calculations. Spectroscopic factors obtained from the analysis are in fair agreement with theoretical predictions.

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Nuclear Data Sheets for A = 29
2012, Nuclear Data Sheets
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 study of the 29,30Si(d, p)30,31Si reactions using a polarised beam
1987, Nuclear Physics, Section A
Differential cross sections and vector and tensor analysing powers have been measured for the $^{29,30} Si (d, p)^{30,31} Si$ reactions at 12.3 MeV, over an angular range from 20° to 100° in the laboratory frame. The angular distributions are compared with DWBA calculations and experimental spectroscopic factors are compared with shell model calculations. The vector analysing powers show a marked J-dependence and the D-state of the deuteron has a particular influence on the tensor analysing powers.
Elastic magnetic electron scattering from 29Si and 31P
1984, Nuclear Physics, Section A
Elastic magnetic electron-scattering form factors from ²⁹Si and ³¹P have been measured in the range of momentum transfer from 1.0 to 2.8 fm⁻¹. Analysis of the data using a particle-core-coupling model yields $2 s_{12}$ occupation probabilities for the valence nucleon of 0.46 ± 0.01 for the neutron in ²⁹Si and 0.48 ± 0.01 for the proton in ³¹P. The radius of the $2 s_{12}$ proton orbit in ³¹P has been found to be (5.3^+2.6_−1.5)% larger than the corresponding neutron orbit in ²⁹Si. Recent large-basis shell-model calculations of the form factors do not accurately reproduce the experimental results.
Systematic study of the (d, p) reaction with 56 MeV polarized deuterons
1984, Nuclear Physics, Section A
Differential cross sections and vector analyzing powers were measured for the (d, p) reaction with 56 MeV polarized deuterons. The investigation covered the transitions to the single-particle states of the 1p. 2s, 1d. 2p, 1f, 3s, 2d and 1g shells. The analyzing powers showed a j-dependence which depended on the number of nodes in the radial wave function of the transferred neutron. DWBA and adiabatic model calculations were carried out. The DWBA calculations reproduced the experimental cross sections and analyzing powers for the stripping to the j_> states. The adiabatic model did not necessarily improve the fits to the data for these transitions. As for the j_< transitions, on the other hand, the DWBA calculations could not reproduce the experimental angular distributions, while the adiabatic model calculations improved the agreement with the experimental data.
Projectile excitation effects on vector polarized 6Li scattering from 28Si and 16O
1984, Physics Letters B
Scattering of polarized ⁶Li from ²⁸Si and ¹⁶O targets at E_lab ∼ 20 MeV is investigated including the effects of projectile excitation. A single folding model, assuming a d + α cluster structure for ⁶Li, was used consistently for the interactions in the coupled channels calculations. Contrary to existing one-channel calculations the vector analysing powers were found to be generated by the projectile excitation mechanism and not the folding model spin-orbit potential.

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^‡: Work supported in part by the US Atomic Energy Commission.

^†: Present address: Department of Physics, University of Birmingham, Birmingham 15, England.

^††: Present address: American Science and Engineering, 11 Carlton Street, Cambridge, Massachusetts.

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Nuclear Physics A

Abstract

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Cited by (28)

Nuclear Data Sheets for A = 29

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

A study of the <sup>29,30</sup>Si(d, p)<sup>30,31</sup>Si reactions using a polarised beam

Elastic magnetic electron scattering from <sup>29</sup>Si and <sup>31</sup>P

Systematic study of the (d, p) reaction with 56 MeV polarized deuterons

Projectile excitation effects on vector polarized <sup>6</sup>Li scattering from <sup>28</sup>Si and <sup>16</sup>O