Magnetic Form Factors of <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">Tl</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>205</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> and <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">Pb</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>207</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span>: Establishing the Limits of Mean-Field Theory

C. N. Papanicolas; L. S. Cardman; J. H. Heisenberg; O. Schwentker; T. E. Milliman; F. W. Hersman; R. S. Hicks; G. A. Peterson; J. S. McCarthy; J. Wise; B. Frois

doi:10.1103/PhysRevLett.58.2296

Magnetic Form Factors of ${}^{205}{Tl}$ and ${}^{207}{Pb}$ : Establishing the Limits of Mean-Field Theory

C. N. Papanicolas, L. S. Cardman, J. H. Heisenberg, O. Schwentker, T. E. Milliman, F. W. Hersman, R. S. Hicks, G. A. Peterson, J. S. McCarthy, J. Wise, and B. Frois

Phys. Rev. Lett. 58, 2296 – Published 1 June 1987

Abstract

The ground-state magnetization densities of ${}^{207}{Pb}$ and ${}^{205}{Tl}$ have been studied by 180° elastic electron scattering. The magnetic form factors were found to be quenched substantially relative to the predictions of the independent-particle model. Microscopic calculations indicate that core polarization can account for part of the observed suppression but it is not sufficient to reproduce the data. The quenching observed at high momentum transfers is comparable to that observed in related electron-scattering studies in the lead region, and can be explained in terms of partial occupancy of shell orbits in ${}^{208}{Pb}$ .

Received 22 December 1986

DOI:https://doi.org/10.1103/PhysRevLett.58.2296

Authors & Affiliations

C. N. Papanicolas¹, L. S. Cardman¹, J. H. Heisenberg², O. Schwentker^2,*, T. E. Milliman², F. W. Hersman², R. S. Hicks³, G. A. Peterson³, J. S. McCarthy⁴, J. Wise^2,4, and B. Frois⁵

¹Nuclear Physics Laboratory and Department of Physics, University of Illinois at Urbana-Champaign, Champaign, Illinois 61820
²Department of Physics, University of New Hampshire, Durham, New Hampshire 03824
³Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003
⁴Department of Physics, University of Virginia, Charlottesville, Virginia 22901
⁵Départment de Physique Nucléaire et Hautes Energies, Centre d'Etudes Nucléaires de Saclay, F-91191 Gif-sur-Yvette, France