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Green, P. V.; Kemper, K. W.; Kerr, P. L.; Mohajeri, K.; Myers, E. G.; Robson, D.; Rusek, K.; Thompson, I. J.

doi:10.1103/physrevc.53.2862

Cited by 16 publications

(12 citation statements)

References 26 publications

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“…Various studies of the scattering of unpolarised [1] and polarised [2,3,4] 6 Li from 4 He using conventional potential models have failed to yield a fully satisfactory description of the data. Conventionally parameterised potentials fail seriously, even when the absorption is allowed to be l-dependent.…”

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confidence: 99%

Determination of 6Li4He interaction from multi-energy scattering data

1999

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We present the first successful potential model description of 6 Li -4 He scattering. The differential cross-sections for three energies and the vector analyzing powers for two energies were fitted by a single potential with energy dependent imaginary components. An essential ingredient is a set of Majorana terms in each component. The potential was determined using a recently developed direct data-to-potential inversion method which is a generalisation of the IP S-matrix-to-potential inversion algorithm. We discuss the problems related to this phenomenological approach, and discuss the relationship of our results to existing and future theories.

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confidence: 99%

Determination of 6Li4He interaction from multi-energy scattering data

1999

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“…3). Analysis showed that CRC could reproduce the differential cross-section for alpha elastically scattered by 6 Li, where experimental data were taken from previous publications [18][19][20][21][22][23][24][25][26][27][28][29].…”

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confidence: 99%

Analysis of Alpha Elastically Scattered by Light Nuclei Using Crystalline Model Approach

Amar

2021

Arab Journal of Nuclear Sciences and Applications

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Elastic scattering of alpha particles by light nuclei is achieved using coupled reaction channel (CRC) and crystaline model approach (CM) to compare and reanalyze the availability of applying novel ideas in the nuclear reaction field. Coupled reaction channel (CRC) and crystal model (CM) have been used on alpha elastically scattered by 6,7 Li, 9 Be, and 11 B, where alpha-target interaction has been modified. The real part of the potential has been selected as crystal model (CM) with a Gaussian form. The imaginary part of the potential was taken in Woods-Saxon form, where the spin-orbit effect has been excluded from this analysis. Fitting of experimental data obtained using CRC and CM agreed well for alpha elastically scattered by 6,7 Li and 9 Be, whereas results obtained for 11 B using CM were poor. More modifications should be made on CM to reproduce the differential cross-section for alpha elastically scattered by 11 B .

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“…the so-called Fourier-Bessel analysis). To do this generally entails computationally expensive and highly nonlinear multi-parameter fitting, often leading to many local minima [10]. The GIP procedure for direct data-to-potential inversion solves many of these problems.…”

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confidence: 99%

“…the derivatives of χ 2 with respect to the potential components C (k) j must vanish. Solving these linear equations is straightforward for any reasonable number of them and yields corrected values [8,10]. We then iterate the whole procedure, with wave-functions ψ l in Equation 3 calculated using the corrected potentials from Equation 1, until convergence is reached.…”

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confidence: 99%

“…We then iterate the whole procedure, with wave-functions ψ l in Equation 3 calculated using the corrected potentials from Equation 1, until convergence is reached. This algorithm almost always converges very rapidly [8,10], in general diverging only when highly inconsistent or erroneous data have been used or when the iterative process involves a very unsuitable starting point.…”

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confidence: 99%

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New technique for phase shift analysis: Multienergy solution of inverse scattering problem

et al. 1998

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We demonstrate a new approach to the analysis of extensive multi-energy data. For the case of d + 4 He, we produce a phase shift analysis covering for the energy range 3 to 11 MeV. The key idea is the use of a new technique for data-to-potential inversion which yields potentials which reproduce the data simultaneously over a range of energies. It thus effectively regularizes the extraction of phase shifts from diverse, incomplete and possibly somewhat contradictory data sets. In doing so, it will provide guidance to experimentalists as to what further measurements should be made. This study is limited to vector spin observables and spin-orbit interactions. We discuss alternative ways in which the theory can be implemented and which provide insight into the ambiguity problems. We compare the extrapolation of these solutions to other energies. Majorana terms are presented for each potential component. 25.45.De, 25.

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Analyzing powers inHe4(6

Cited by 16 publications

References 26 publications

Determination of 6Li4He interaction from multi-energy scattering data

Determination of 6Li4He interaction from multi-energy scattering data

Analysis of Alpha Elastically Scattered by Light Nuclei Using Crystalline Model Approach

New technique for phase shift analysis: Multienergy solution of inverse scattering problem

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