Study of the reaction 34S(d,p)35S with vector-polarized deuterons

doi:10.1016/0375-9474(77)90565-6

Nuclear Physics A

Volume 287, Issue 1, 29 August 1977, Pages 94-108

https://doi.org/10.1016/0375-9474(77)90565-6 Get rights and content

Abstract

Angular distributions of vector analyzing power and cross section for the reaction ³⁴S ( $d$ , p)³⁵S have been measured at a deuteron energy of 11.8 MeV. The data are compared to DWBA calculations. The optical-potential parameters for the deuteron channel were obtained (i) by fitting elastic deuteron scattering, and (ii) by using the adiabatic model approach by Johnson and Soper. The parameters for the proton channel were calculated from the empirical formulae of Becchetti and Greenlees and of Perey and Perey. Angular distributions of vector analyzing power and cross section result in unambiguous l_n and j^π assignments for 12 states in ³⁵S up to 5.058 MeV excitation energy. Previously known l_n and j^π-values are confirmed by our assignments. Effects of the deuteron d-state and compound nuclear contributions to cross section and analyzing power are discussed. Spectroscopic factors for the states in ³⁵S have been extracted and are compared to those obtained by other workers.

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Nuclear Data Sheets for A = 35
2011, Nuclear Data Sheets
The experimental data are evaluated for known nuclides of mass number A=35 (Na,Mg,Al,Si,P,S,Cl,Ar,K, Ca). Detailed evaluated level properties and related information are presented, including adopted values of level and γ-ray energies, decay data (energies, intensities and placement of radiations), and other spectroscopic data. This work supersedes earlier full evaluations of A=35 published by 1990En08 (also 1998En04 update) and 1978En02.
No excited states are known in ³⁵Na, ³⁵Mg, ³⁵Ca. No γ rays are known in 35K. Experimental data for ³⁵Al and ³⁵Si are limited and their radioactive decay schemes seem incomplete in view of large Q values and known excitations much below than allowed by Q values. The ³⁵S, ³⁵Cl and ³⁵Ar nuclides remain as the most extensively studied from many different reactions and decays.
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.
Spectroscopic information on 13,14C, 15N, 17O, 29-31Si, 33S, 28Cl and 111,113,115,117Cd from the (d,p) reaction
1990, Nuclear Physics, Section A
The accurate and precise (d, p) reaction Q-values and excitation energies corresponding to 98 states of final nuclei ^13,14C, ¹⁵N, ¹⁷O, ^29–31Si, ³³S, ³⁸C1 and ^{111,113,115,117} Cd are presented as a result of high resolution experiments performed with 12.3 MeV deuterons. The protons were analysed by multi-angle magnetic spectrograph. The resolving power $E ΔE$ of about 2000 and accurate calibration of spectra allowed to get the energies of most states with higher precision than is presently known. Angular distributions of protons from the reaction ³⁷Cl(d, p)³⁸Cl were analysed using DWBA calculations. Revised values of transferred orbital angular momenta and spectroscopic factors for 25 states of ³⁸C1 are given. Single-particle strengths for If and 2p orbitals are compared with respective single-particle strengths from the reaction ³⁶S(d, p)³⁷S. Sum rules indicate that substantial parts of 1f and 2p single-particle strengths are exhausted by states observed in present experiment.
Spectroscopic information on 36Cl from the (d,p) reaction
1988, Nuclear Physics, Section A
The reaction ³⁵Cl(d, p)³⁶Cl was studied at deuteron energy 12.3 MeV using a multi-angle magnetic spectrograph with resolving power $E ΔE ≈2000$ . Precise excitation energies of 77 states in ³⁶Cl up to 7 MeV are presented. The level energies of some states were measured with a precision of 70–80 eV; several new states were found. Angular distributions of proton groups corresponding to 51 states in ³⁶Cl were analysed using DWBA calculations. Transferred orbital angular momenta and absolute values of spectroscopic factors were deduced. Spectroscopic factors for 36 states are given for the first time. The substantial parts of single-particle strengths for If and 2p orbits are exhausted by the observed l = 3 and l = 1 transitions. Spectroscopic strengths for the positive-parity states show that 2s and 1d orbits in the ground state of ³⁵Cl are much more empty than should follow from simple-shell-model or from calculations made in the full space of sd-shell-model wave functions by Wildenthal et al.
Hole-strength distributions from the 34S(d, 3He)33P and 34S(d, t)33S reactions
1988, Nuclear Physics, Section A
A vector-polarized deuteron beam of 52 MeV was used to excite proton and neutron hole states via the ³⁴S( $d$ , ³He)³³P and the ³⁴S( $d$ , t)³³S reactions. From the measured angular distributions of differential cross sections σ(θ) and analyzing powers T₁₁(θ) we determined the spins of 9 states in ³³P and of 13 states in ³³S. The comparison of proton and neutron pick-up spectra yields isospin assignments for ³³S states $(T = 12, 32$ ). Spectroscopic factors deduced from a DWBA analysis were used to determine the lowest moments of the strengths distributions in ³³P and ³³S. Combined with proton and neutron stripping data we calculate ground state occupancies and single-particle energies for ³⁴S and determine the Fermi surfaces for protons and neutrons. This information allows the application of a recently published sum rule to predict Gamow-Teller strengths S⁺ and S⁻. Combined with previous data the extracted single-particle energies exhibit systematic features which we parametrise as linear functions of mass number A and isospin To for target nuclei with 28 ⩽ A ⩽ 52. The parameters are closely related to effective particle-hole interactions.
Spectroscopic information on 35S and 37S from the (d, p) reaction
1984, Nuclear Physics, Section A
The reactions ³⁴S(d,p)³⁵S and ³⁶S(d,p)³⁷S were studied at the incident deuteron energy of 12.3 MeV. Proton groups were analysed using a multi-angle magnetic spectrograph with the resolving power $E ΔE ≈ 1400$ . Precise Q-values corresponding to 13 states of ³⁵S up to the excitation energy of 7483 keV and 22 states of ³⁷S up to the excitation energy of 6406 keV are presented. The ground-state transition Q-value for the reaction ³⁶S(d,p)³⁷S was found to be 2079.12 ± 0.13 keV. Angular distributions of proton groups corresponding to 6 states in ³⁵S and to 11 states in ³⁷S were analysed using DWBA calculations. Transferred orbital angular momenta and spectroscopic factors were deduced. Summed spectroscopic strengths show that substantial parts of single-particle strengths for $1 f_{72}, 2 p_{32} and 2 p_{12}$ in both reactions are exhausted b observed transitions.

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^☆: Work supported in part by the United States Energy Research and Development Administration.

^††: Present address: The University of Manitoba, Cyclotron Laboratory, Winnipeg, Manitoba R3T 2N2, Canada.

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Nuclear Physics A

Abstract

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Nuclear Data Sheets for A = 35

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

Spectroscopic information on <sup>13</sup>,<sup>14</sup>C, <sup>15</sup>N, <sup>17</sup>O, <sup>29-31</sup>Si, <sup>33</sup>S, <sup>28</sup>Cl and <sup>111,113,115,117</sup>Cd from the (d,p) reaction

Spectroscopic information on <sup>36</sup>Cl from the (d,p) reaction

Hole-strength distributions from the <sup>34</sup>S(d, <sup>3</sup>He)<sup>33</sup>P and <sup>34</sup>S(d, t)<sup>33</sup>S reactions

Spectroscopic information on <sup>35</sup>S and <sup>37</sup>S from the (d, p) reaction

Study of the reaction 34S(d,p)35S with vector-polarized deuterons☆

Abstract

A170

Nucl. Phys.

Nucl. Phys.

Nucl. Phys.

Nucl. Instr.

Nucl. Phys.

Nucl. Phys.

Phys. Rev.

Nucl. Data Tables

Nucl. Phys.

Bull. Am. Phys. Soc.

Izv. Akad. Nauk SSSR (ser. fiz.)

Phys. Rev. Lett.

Study of the reaction ³⁴S( $d$ ,p)³⁵S with vector-polarized deuterons☆