Polarized spectral function of deformed nuclei modeling the reaction

Caballero, J. A.; Donnelly, T. W.; Poulis, G. I.; Garrido, E.; Guerra, E. Moya de

doi:10.1016/0375-9474(94)90932-6

Cited by 9 publications

(30 citation statements)

References 26 publications

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“…Indeed, given the complexity that already exists for our basic model and the fact that no such extensive study for a complex nucleus is available, the initial studies presented in Refs. [7,15,8] being all that we are aware of for coincidence polarization observables, at this time explorations with more sophisticated nuclear configurations are probably unwarranted. Of course, when experimental studies of this type become imminent these extensions can be undertaken.…”

Section: Resultsmentioning

confidence: 99%

“…For the general expression of the polarized spectral function of deformed nuclei, see Ref. [7]. In this work we are also interested in examining in more detail the relations between the single-particle momentum distribution and that of the whole nucleus in the extreme shell model, and thus we will follow a somewhat different approach (although one that is completely equivalent).…”

Section: Momentum Distributions Of Hole Nucleimentioning

confidence: 99%

“…The general formalism for PWIA in polarized nuclei was developed in Refs. [5,7], and it was recently specialized in Ref. [6] to the particular case of polarized, one-hole nuclei, although in that work the exclusive responses were integrated over the emission angle in order to study the inclusive case.…”

Section: Factorization Of the Responsesmentioning

confidence: 99%

“…The general framework for such studies in PWIA was provided in Refs. [5], [7], and it was applied in Ref. [6] to the study of the inclusive polarized responses of one-hole nuclei.…”

Section: Introductionmentioning

confidence: 99%

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Spin Observables in Coincidence Electron Scattering from Nuclei

Amaro

Donnelly

1998

Annals of Physics

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A theoretical description of nucleon knockout reactions initiated by polarized electron scattering from polarized nuclei is presented. Explicit expressions for the complete set of reduced response functions (independent of the polarization angle) that can be experimentally obtained assuming plane waves for the electron are given in a general multipole expansion. The formalism is applied to the particular case of closed-shell-minus-one nuclei using two models for the ejected nucleon, including the final-state interaction phenomenologically with a complex optical potential and in the factorized plane-wave impulse approximation. Relativistic effects in the kinematics and in the electromagnetic current are incorporated throughout -specifically a new expansion of the electromagnetic current in powers only of the struck nucleon momentum is employed. Results are presented for the nucleus 39 K.

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Section: Resultsmentioning

confidence: 99%

Section: Momentum Distributions Of Hole Nucleimentioning

confidence: 99%

Section: Factorization Of the Responsesmentioning

confidence: 99%

“…The general framework for such studies in PWIA was provided in Refs. [5], [7], and it was applied in Ref. [6] to the study of the inclusive polarized responses of one-hole nuclei.…”

Section: Introductionmentioning

confidence: 99%

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Spin Observables in Coincidence Electron Scattering from Nuclei

Amaro

Donnelly

1998

Annals of Physics

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“…All of the measurements mentioned above involving medium and heavy nuclei have been performed with unpolarized targets and hence only the global effects of FSI averaged over all polarization directions have been addressed experimentally to date. Using instead polarized nuclei as targets, new possibilities to extract the full tri-dimensional momentum distribution of nuclei will become available [7,8,9,10]; of course, as in the unpolarized case, the FSI also enter here and must be taken into account.…”

Section: Introductionmentioning

confidence: 99%

Final-state interactions in (e, e′p) reactions with polarized nuclei

Amaro

Donnelly

1999

Nuclear Physics A

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The cross section for coincidence, quasielastic proton knock-out by electrons from a polarized 39 K nucleus is computed in DWIA using an optical potential in describing the wave function of the ejected nucleon. The dependence of the FSI on the initial polarization angles of the nucleus is analyzed and explained in a new, semi-classical picture of the reaction in which the nuclear transparency decreases as a function of the amount of nuclear matter that the proton has to cross, thus providing a method for obtaining detailed information on its mean free path in finite nuclei. We propose a procedure to find the best initial kinematical conditions for minimizing the FSI which will be useful as a guide for future experiments with polarized nuclei.

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Spin Dependent Momentum Distributions in Deformed Nuclei

et al. 1995

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We study the properties of the spin dependent one body density in momentum space for odd-A polarized deformed nuclei within the mean field approximation. We derive analytic expressions connecting intrinsic and laboratory momentum distributions. The latter are related to observable transition densities in p-space that can be probed in one nucleon knock-out reactions from polarized targets. It is shown that most of the information contained in the intrinsic spin dependent momentum distribution is lost when the nucleus is not polarized. Results are presented and discussed for two prolate nuclei, 21 Ne and 25 Mg, and for one oblate nucleus, 37 Ar. The effects of deformation are highlighted by comparison to the case of odd-A nuclei in the spherical model.where M λ (p) are the multipoles of the intrinsic momentum distribution (see Eq. (24)), G(λ; JK) is a geometrical coefficient

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Polarized spectral function of deformed nuclei modeling the reaction

Cited by 9 publications

References 26 publications

Spin Observables in Coincidence Electron Scattering from Nuclei

Spin Observables in Coincidence Electron Scattering from Nuclei

Final-state interactions in (e, e′p) reactions with polarized nuclei

Spin Dependent Momentum Distributions in Deformed Nuclei

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