On the tensor term in the deuteron optical potential nearE d =20 MeV

Frick, R.; Clement, H.; Graw, G.; Schiemenz, P.; Seichert, N.; Tsu-Hsun, Sun

doi:10.1007/bf01415625

Cited by 35 publications

(4 citation statements)

References 21 publications

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“…The overall general success of folding models for central and spin-orbit interactions suggests that folding model calculations of V R (r) should give at least approximately the correct radial form and overall magnitude, but this has not been borne out in the case of T R according to extensive phenomenological studies, e.g. [20][21][22][23][24]. The overall conclusion is that the real part of V R (r) predicted by the folding model is much too strong for heavy nuclei, of the right order of magnitude for light target nuclei, and actually about three times too strong for a 4 He target.…”

Section: The T R Operatormentioning

confidence: 99%

An inversion procedure for coupled-channel scattering: determining the deuteron-nucleus tensor interaction

et al. 2000

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We present a practical S-matrix to potential inversion procedure for coupledchannel scattering. The inversion technique developed is applied to nondiagonal S J ll ′ for spin one projectiles, yielding a tensor interaction T R and is also applicable to spin-1 2 plus spin-1 2 scattering. The method is a generalization of the iterative-perturbative, IP, method. It is tested and evaluated and we investigate the degree of uniqueness of the potential, particularly for cases where there is insufficient information to define the potential uniquely. We examine the potentials which result when the S-matrix is generated from a T P interaction. We also develop the generalisation, using established procedures, of IP S-matrix-to-potential inversion to direct observable-to-potential inversion. This 'direct inversion' procedure is demonstrated to be an efficient method for finding a multi-component potential including a T R interaction fitting multi-energy σ, iT 11 , T 20 , T 21 and T 22 data for the scattering of spin-1 nuclei from spin-zero target. It is applicable to other channel spin 1 cases.

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Section: The T R Operatormentioning

confidence: 99%

An inversion procedure for coupled-channel scattering: determining the deuteron-nucleus tensor interaction

et al. 2000

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“…Equations (7), (8), (13), and (14) are the essential inputs for the dispersive OMP calculations. The bottom part of Fig.…”

Section: Introductionmentioning

confidence: 99%

“…and (13) Jii, (E)=d (E -E~)4+e' (14) In producing the curves in the top part of Fig. 2 In the re-analysis for the cross section and analyzing power data in the dispersive OMP frame, the volume integrals of the surface and volume imaginary potentials, Jii (E) and Jii (E), are fixed to the values given by the D S best-fit optical potentials reported in Refs.…”

Section: Introductionmentioning

confidence: 99%

Dispersion relation analysis ofd+208Pb elastic scattering

et al. 1992

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Elastic scattering of deuterons from Pb in the energy range Ed =9 to 79.2 MeV is analyzed using a dispersive optical model potential (OMP). In this analysis, a dispersion relation connects the volume integrals of the imaginary and the real parts of the OMP. Best-fit dispersive OMP parameters are obtained from fits to experimental cross-section and analyzing power data at one energy, and dispersive OMP parameters with a smooth energy dependence are determined from fits to the entire data set. Comparisons, showing fits of similar quality, of the predictions of the cross sections and analyzing powers given by the best-fit dispersive OMP and standard OMP are presented. Dispersive OMP parameters with a smooth energy dependence also give a good description of the experimental data.PACS number(s): 24.10. Ht, 24.70.+s, 25.45.De

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“…At energies above the Coulomb barrier, optical-model fits incorporating a tensor potential have been made to deuteron elastic scattering data (Refs. [4] and [5], for example), but even these fits do not unambiguously determine the potential. In any case, a tensor potential determined above the Coulomb barrier is not necessarily correct for sub-Coulomb energies.…”

mentioning

confidence: 99%