Detailed test of distorting potentials for the transfer reactions 40Ca(7Li, 6Li/6He)

doi:10.1016/0375-9474(86)90525-7

Nuclear Physics A

Volume 457, Issue 1, 1 September 1986, Pages 173-181

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Abstract

Angular distributions for the transfer reactions ⁴⁰Ca(⁷Li, ⁶Li)⁴¹Ca and ⁴⁰Ca(⁷Li, ⁶He)⁴¹Sc have been measured at 34 MeV, in small angular increments out to angles where the cross section has fallen by four orders of magnitude. Finite range DWBA calculations show a high sensitivity to different distorting potentials at the largest angle cross sections. It is found that a combination of Woods-Saxon and double-folded potentials does the best job of reproducing the data over the whole angular range.

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Cited by (6)

Nuclear Data Sheets for A = 41
2016, Nuclear Data Sheets
Available information pertaining to the nuclear structure of all nuclei with mass numbers A=41 ranging from Al (Z=13) to Ti (Z=22) are presented. The experimental reaction and decay data are evaluated and any inconsistencies or discrepancies are noted. The adopted values for various level properties (such as the spin, parity and and halflife) and gamma properties (energy, intensity and multipole character) are given.
Since the prior evaluation several new measurements have expanded our knowledge of A=41 nuclides. The half-life of the ground state of ⁴¹Si has been determined and a single excited state identified. Excited levels in ⁴¹P have been observed for the first time. In ⁴¹Cl, seven new excited states have been identified in deep inelastic and heavy ion transfer reactions. Half-lifes for four states in ⁴¹Ar have been updated and additional levels with gammas have been included from a new measurement using the multiple ion transfer reaction. In ⁴¹Ca via charge-exchange reaction measurements, several new excited states were observed. A number of new resonances in ⁴¹K have been identified via the (p,γ) reaction.
There remains a significant discrepancy in the half-life of the first excited state (980 keV) in ⁴¹K, with measurements differing by more than an order of magnitude. Transfer reactions suggest that this M1 transition should be l-forbidden, however, several measurements yield a lifetime which suggests a sizable M1 strength. Further measurements to resolve the current conflicts would be beneficial.
Nuclear data sheets for A = 41
2001, Nuclear Data Sheets
Nuclear spectroscopic information for the known nuclides of mass 41 (Al,Si,P,S,Cl,Ar,K,Ca,Sc,Ti) has been evaluated. The principal sources of the adopted levels presented are Endt's evaluations (1990En08, 1978En02). The data sets for reactions and decays, including all available gamma--ray data, are based mostly on the original literature. There are no data available for the excited states in 41 Al, 41 Si, 41 P, 41 Cl and 41 Ti.
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.
Study of the one-neutron transfer reactions induced by polarized 7Li ON 26Mg and 120Sn
1988, Nuclear Physics, Section A
Angular distributions of the cross sections and analyzing powers up to third rank have been measured for the one-neutron transfer reactions ²⁶Mg(⁷Li,⁶Li)²⁷Mg, ¹²⁰Sn(⁷Li,⁶Li)¹²¹Sn and ¹²⁰Sn(⁷Li, ⁸Li)¹²⁹Sn initiated by polarized ⁷Li ions of 44 MeV. Third-rank analyzing power has been measured for the first time in transfer reactions. Coupled-channels calculations in which the ground and first excited states of ⁷Li are coupled together by collective interactions and one-neutron transfers are calculated in exact finite range explain the experimental data for low-lying states in final nuclei. Extracted spectroscopic factors are in good agreement with those obtained from other one-neutron transfer reactions on the same targets.
Analysing powers of the 54Fe(7Li, 6He)55Co reaction at 50 MeV
1992, Journal of Physics G: Nuclear and Particle Physics
Cluster-stripping reactions in the heavy-ion collisions
1990, Il Nuovo Cimento A

^★: Work supported in part by the National Science Foundation and the state of Florida.

^★★: Work supported in part by the Department of Energy

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Nuclear Physics A

Abstract

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Cited by (6)

Nuclear Data Sheets for A = 41

Nuclear data sheets for A = 41

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

Study of the one-neutron transfer reactions induced by polarized <sup>7</sup>Li ON <sup>26</sup>Mg and <sup>120</sup>Sn

Analysing powers of the <sup>54</sup>Fe(<sup>7</sup>Li, <sup>6</sup>He)<sup>55</sup>Co reaction at 50 MeV

Cluster-stripping reactions in the heavy-ion collisions