Relative <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mn>3</mn><mi>s</mi></math> Spectroscopic Strength in <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>206</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math> and <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>208</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math> Studied with the (<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>e</mi><mo>,</mo><mrow><msup><mrow><mi>e</mi></mrow><mrow><mo>′</mo></mrow></msup></mrow><mi>p</mi></math>) Knockout Reaction

E. N. M. Quint; J. F. J. van den Brand; J. W. A. den Herder; E. Jans; P. H. M. Keizer; L. Lapikás; G. van der Steenhoven; P. K. A. de Witt Huberts; S. Klein; P. Grabmayr; G. J. Wagner; H. Nann; B. Frois; D. Goutte

doi:10.1103/PhysRevLett.57.186

Relative $3 s$ Spectroscopic Strength in ${}^{206}{Pb}$ and ${}^{208}{Pb}$ Studied with the ( $e, e^{'} p$ ) Knockout Reaction

E. N. M. Quint, J. F. J. van den Brand, J. W. A. den Herder, E. Jans, P. H. M. Keizer, L. Lapikás, G. van der Steenhoven, P. K. A. de Witt Huberts, S. Klein, P. Grabmayr, G. J. Wagner, H. Nann, B. Frois, and D. Goutte

Phys. Rev. Lett. 57, 186 – Published 14 July 1986

Abstract

A high-resolution ( $e, e^{'} p$ ) measurement has been performed to determine the relative occupation probability of the $3 s_{\frac{1}{2}}$ proton orbits in ${}^{206}{Pb}$ and ${}^{208}{Pb}$ . The knockout strength to the ground state of ${}^{205}{Tl}$ is 31(3)% smaller than that of ${}^{207}{Tl}$ . Appreciable fragmentation of $l = 0$ knockout strength is observed in ${}^{205}{Tl}$ , whereas all $l = 0$ strength in the excitation range up to 5.5 MeV resides in the ground state of ${}^{207}{Tl}$ . Up to this energy the summed $3 s$ strength is found to be 16(9)% smaller in ${}^{206}{Pb}$ than in ${}^{208}{Pb}$ .

Received 1 April 1986

DOI:https://doi.org/10.1103/PhysRevLett.57.186

Authors & Affiliations

E. N. M. Quint¹, J. F. J. van den Brand¹, J. W. A. den Herder¹, E. Jans¹, P. H. M. Keizer¹, L. Lapikás¹, G. van der Steenhoven^1,2, P. K. A. de Witt Huberts¹, S. Klein³, P. Grabmayr³, G. J. Wagner³, H. Nann⁴, B. Frois⁵, and D. Goutte⁵

¹Nationaal Instituut voor Kernfysica en Hoge Energiefysica (NIKHEF-K), 1009 AJ Amsterdam, The Netherlands
²Vrije Universiteit, Amsterdam, The Netherlands
³Physikalisches Institut, D-7400 Tübingen, Federal Republic of Germany
⁴Indiana University Cyclotron Facility, Bloomington, Indiana 47405
⁵Département de Physique Nucléaire et Hautes Energies, Centre d'Etudes Nucléaires de Saclay, 91191 Gif-sur-Yvette Cedex, France