The mass of 35P and spin-parity assignments for excited 35P states

doi:10.1016/0370-2693(85)91499-6

Physics Letters B

Volume 156, Issues 3–4, 20 June 1985, Pages 155-158

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Abstract

The ³⁶S(d,³He)³⁵P reaction was studied with 52 MeV unpolarized and vector-polarized deuterons. The mass excess of ³⁵P was determined to be −24859±2 keV. Angular distributions of the differential cross sections $d σ(θ) d ω$ and the analyzing powers iT₁₁(θ) for strongly excited states were measured. Excitation energies of various proton hole states were determined and the respective values of spin and parity were assigned. The DWBA analysis shows that these states exhaust nearly the complete pickup strength of the (2s,1d) shell.

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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.
A cyclotron as a high resolution mass spectrometer for fast secondary ions
1994, Nuclear Inst. and Methods in Physics Research, A
We present the first results from a new method for mass measurements developed using the GANIL coupled cyclotrons, which uses a cyclotron as a high resolution mass spectrometer for fast secondary ions. We report here the results obtained with primary beams of 13.74 MeV/nucleon ¹⁵N and ¹²C, accelerated by the first cyclotron and incident on a Ta target located between the cyclotrons. Reaction products with mass-to-charge ratio of 3 were selected and accelerated by the second cyclotron. The accelerated secondary nuclei were detected in the interior of the second cyclotron using a plastic scintillator located on a radially moving rod. Details of the procedure and results are discussed. When two masses are close enough to be accelerated simultaneously by the second cyclotron, the precision in the measurement of the mass difference is better than 10⁻⁶.
The distribution of proton-hole strengths in the (2s, 1d)-shell of 35Cl, 37Cl and 39Cl
1993, Nuclear Physics, Section A
A vector-polarized deuteron beam of 52 MeV was used to excite proton-hole states via the ( $d$ , ³He) reaction on ³⁶Ar, ³⁸Ar and ⁴⁰Ar. From the measured angular distributions of differential cross sections σ(θ) and analyzing powers iT₁₁(θ) we determined spins and parities $J^{π} = 12^{+}, 32^{+} 52^{+} and 12^{−}$ of a number of isolated levels in ³⁶Cl, ³⁷Cl and ³⁹Cl and the complete 1d hole strength distribution in the continuum region. Relative proton occupancies, single-particle energies, the shape of the Fermi surface and spreading widths were obtained from a combined analysis with proton stripping reactions on even argon isotopes. The deduced Id spin-orbit splitting is found to be consistent with the recently observed dependence on main quantum number n and mass number A. The mass excess of ³⁹Cl was determined to be (−29798 ± 2.8) keV compared to a value of (−29804 ± 19) keV as given in the mass tables.
The 60Ni(d, 3He)59Co reaction and the proton strengths distributions in even nickel isotopes
1992, Nuclear Physics, Section A
A vector-polarized deuteron beam of 52 MeV was used to excite proton hole states via the ⁶⁰Ni( $d$ , ³He)⁵⁹Co reaction. From the measured angular distributions of differential cross sections σ(Θ) and analyzing powers iT₁₁(Θ) we determined spins and parities of a number of individual low lying levels in ⁵⁹Co and the complete hole strength distribution for E_x < 19 MeV. The total (2s, 1d) and (1f, 2p) proton strengths are accounted for. Relative proton occupancies in various orbitals, single-particle energies, the shape of the Fermi surface and spreading widths are the results of a combined analysis with proton stripping reactions on ⁶⁰Ni. A corresponding analysis of proton pick-up and stripping experiments on ⁵⁸Ni, ⁶²Ni and ⁶⁴Ni shows systematic A-dependent features of these integral properties of the spectra.
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.
The production of isotopic 36S targets by ion implantation into carbon foils
1990, Nuclear Inst. and Methods in Physics Research, A

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Physics Letters B

Abstract

References (15)

Phys. Rev.

Z. Phys.

Nucl. Phys.

Z. Phys.

Nucl. Phys.

Nuclear collective motion

Cited by (33)

Nuclear Data Sheets for A = 35

A cyclotron as a high resolution mass spectrometer for fast secondary ions

The distribution of proton-hole strengths in the (2s, 1d)-shell of <sup>35</sup>Cl, <sup>37</sup>Cl and <sup>39</sup>Cl

The <sup>60</sup>Ni(d, <sup>3</sup>He)<sup>59</sup>Co reaction and the proton strengths distributions in even nickel isotopes

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

The production of isotopic <sup>36</sup>S targets by ion implantation into carbon foils