24.5 A MeV 6He+p elastic and inelastic scattering

Stepantsov, S. V.; Bogdanov, D.D.; Фомичев, А. С.; Родин, А. М.; Sidorchuk, S. I.; Slepnev, R. S.; Ter‐Akopian, G. M.; Wolski, R.; Chelnokov, M. L.; Gorshkov, V. A.; Oganessian, Yu. Ts.; Alamanos, N.; Auger, F.; Lapoux, V.; Lobo, G.; Amos, K.; Deb, Pradip; Karataglidis, S.; Golovkov, M. S.; Korsheninnikov, A. A.; Tanihata, I.; Kuzmin, E. A.; Nikolskii, E. Yu.; Kavalov, R.L.

doi:10.1016/s0370-2693(02)02308-0

Cited by 43 publications

(39 citation statements)

References 15 publications

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“…Of these the halo description gives the better match to data especially at the larger scattering angles. This result is consistent with the findings from analyses of lower energy scattering data at 40.9 MeV/nucleon [45] and at 24.5 MeV/nucleon [46]. In fact, the differential cross sections calculated with WS halo set match the data so well that one does not need to contemplate any adjustment.…”

Section: B Differential Cross Sections and Analyzing Powerssupporting

confidence: 88%

Analyzing power in elastic scattering of6He from a polarized proton target at 71 MeV/nucleon

Sakaguchi¹,

Iseri²,

Uesaka³

et al. 2011

Phys. Rev. C

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The vector analyzing power has been measured for the elastic scattering of neutron-rich 6 He from polarized protons at 71 MeV/nucleon making use of a newly constructed solid polarized proton target operated in a low magnetic field and at high temperature. Two approaches based on local one-body potentials were applied to investigate the spin-orbit interaction between a proton and a 6 He nucleus. An optical model analysis revealed that the spin-orbit potential for 6 He is characterized by a shallow and long-ranged shape compared with the global systematics of stable nuclei. A semimicroscopic analysis with a α+n+n cluster folding model suggests that the interaction between a proton and the α core is essentially important in describing the p+ 6 He elastic scattering. The data are also compared with fully microscopic analyses using non-local optical potentials based on nucleon-nucleon g-matrices.

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Section: B Differential Cross Sections and Analyzing Powerssupporting

confidence: 88%

Analyzing power in elastic scattering of6He from a polarized proton target at 71 MeV/nucleon

Sakaguchi¹,

Iseri²,

Uesaka³

et al. 2011

Phys. Rev. C

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“…Consequently, g-folding predictions invariably do not yield the quality of fit to a data set that may be obtained by appropriate adjustment of parameters in current, phenomenological, optical potentials [40]. Nonetheless, the g-folding approach does give cross sections that compare well with observations; well enough that, in some cases, results [32,33,36,38,39] revealed whether a nucleus had a neutron skin or halo. An analysis of cross sections from the elastic scattering of 65 MeV protons from 76 Se is illustrative of the quality of the g-folding potential results.…”

Section: Resultsmentioning

confidence: 99%

“…coupledchannel effects, multi-step processes, and the like, may have importance. For energies 40 MeV and higher, such extra processes have not been needed to find good replication of elastic scattering data with g-folding model evaluations [10,30,31,32,33,34,35], when good structure, and appropriate effective NN interactions are used, and a proper treatment of the Pauli principle is made.…”

Section: Resultsmentioning

confidence: 99%

“…With most cases, g-folding model analyses [10] gave good reproductions of the observations, especially whenever good models for the structure of the target were available. Besides results given in the review [10], in more recent studies the g-folding method has been used to assess the neutron excess distributions in nuclei [36,37,38,39], to compare with non-relativistic and relativistic phenomenological Schrödinger equation solutions [30,31], and to ascertain neutron halo or neutron skin characteristics in light mass radioactive nuclei [32,33].…”

Section: Resultsmentioning

confidence: 99%

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Charge-exchange reaction cross sections and the Gamow-Teller strength for double β decay

2007

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The proportionality between single charge-exchange reaction cross sections in the forward direction as found, for example from (p, n) and ( 3 He,t) and from (n, p) and (d, 2 He) reactions, and the Gamow-Teller (GT) strength into the same final nuclear states has been studied and/or assumed often in the past. Using the most physically justified theory we have at our disposal and for the specific example of the 76 Ge-76 Se system that may undergo double beta-decay, we demonstrate that the proportionality is a relative good assumption for reactions changing a neutron into a proton, i.e. 76 Ge(p, n) 76 As. In this channel, the main contribution to the GT strengths comes from the removal of a neutron from an occupied single-particle (SP) state and putting a proton into an unoccupied SP state having either the same state quantum numbers or those of the spin-orbit partner. In contrast to this, in the second leg of the double beta decay a single proton must be taken from an occupied SP state and a neutron placed in an unoccupied one. This second process often is Pauli forbidden in medium-heavy nuclei and only can be effected if the Fermi surface is smeared out. Such is the case for 76 Se(n, p) 76 As. Our results suggest that one may not always assume a proportionality between the forward-angle cross sections of the charge-exchange reactions and the GT strength in any such medium-heavy nuclei. The discrepancy originates from a pronounced effect of the radial dependence of the nucleon-nucleon (N N ) interaction in connection with the Pauli principle on the cross sections in the (n, p) reaction channel. Such a radial dependence is completely absent in the GT transition operator.

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“…[1].) It is also noteworthy that the model has been applied to the scattering of exotic nuclei from hydrogen [3][4][5][6] with equal success. Another application has been the prediction of integral observables of elastic scattering, for both protons and neutrons, with quite good agreement [7].…”

Section: Introductionmentioning

confidence: 99%

Spin observables in71AMeV6,8He-hydrogen scattering

Karataglidis

Amos

2013

Phys. Rev. C

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Predictions of cross sections and analyzing powers using g-folding optical potentials for the scattering of 71A MeV 6,8 He ions from (polarized) hydrogen are compared with data. A g-folding model in which exchange amplitudes are evaluated explicitly was used with wave functions of 6,8 He specified from a no-core shell model that used a complete (0 + 2 + 4)hω basis. The analyzing powers reveal some sensitivities to the details of the wave functions, especially in the case of halo nuclei.

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24.5 A MeV 6He+p elastic and inelastic scattering

Cited by 43 publications

References 15 publications

Analyzing power in elastic scattering of6He from a polarized proton target at 71 MeV/nucleon

Analyzing power in elastic scattering of6He from a polarized proton target at 71 MeV/nucleon

Charge-exchange reaction cross sections and the Gamow-Teller strength for double β decay

Spin observables in71AMeV6,8He-hydrogen scattering

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