On the mean square intrinsic charge radius of the neutron

Alexandrov, Yu.

doi:10.1080/10448639408217665

Cited by 3 publications

(1 citation statement)

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“…In practical calculations, in order to use for a a, fit only the energy dependence of the s-wave cross section os(j, i) and to account better for the neutron interaction with nuclear charge Z( j)e, the following substitution was made [6] in eq. ( 12) : R'(j) = RLtrU + ap(Az(i)ane 3 giving…”

Section: E ( J Ei) = -K { K T R ( J ) + W ) a N E [ F E I ( J Ei)mentioning

confidence: 99%

Evaluation of neutron fundamental parameters from the total cross section data

Aleksejevs¹,

Barkanova²,

Krasta³

et al. 1997

Phys. Scr.

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Using experimental data from the neutron transmission measurements on enriched 206,207,208Pb, natural Pb and Bi targets, the potential scattering radii R' and the electric polarizability of the neutron αn were determined by general least squares fit at fixed neutron-electron bound scattering length values: bne = −1.32 × 10−3 fm (Garching) and bne = −1.59 × 10−3 fm (Dubna). The evaluations were performed in two versions: (1) The potential scattering radii R' were taken as fitted parameters; (2) R' values were deduced from optical model calculations. The obtained potential scattering radii values are in the range R' = 9.0 − 10.0 fm. The electric polarizability of the neutron in the first version resulted in αn = +(0.12 ± 0.44) × 10−3 fm3 with the Garching bne value and αn = −(0.97 ± 0.44) × 10−3 fm3 with the Dubna bne value, but in the second calculation version - in αn = −(0.14 ± 0.37) × 10−3 fm3 with both bne values. On the basis of obtained results we give preference to the Garching bne value.

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Section: E ( J Ei) = -K { K T R ( J ) + W ) a N E [ F E I ( J Ei)mentioning

confidence: 99%

Evaluation of neutron fundamental parameters from the total cross section data

Aleksejevs¹,

Barkanova²,

Krasta³

et al. 1997

Phys. Scr.

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Neutron charge radius and the Dirac equation

Bawin

Coon

1999

Phys. Rev. C

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We consider the Dirac equation for a finite-size neutron in an external electric field. We explicitly incorporate Dirac-Pauli form factors into the Dirac equation. After a non-relativistic reduction, the Darwin-Foldy term is cancelled by a contribution from the Dirac form factor, so that the only coefficient of the external field charge density is $e/6 r^2_{En}$, i. e. the root mean square radius associated with the electric Sachs form factor . Our result is similar to a recent result of Isgur, and reconciles two apparently conflicting viewpoints about the use of the Dirac equation for the description of nucleons.Comment: 7 pages, no figures, to appear in Physical Review

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