Proton scattering by short lived sulfur isotopes

F. Maréchal; T. Suomijärvi; Y. Blumenfeld; A. Azhari; E. Bauge; D. Bazin; J. A. Brown; P. D. Cottle; J. P. Delaroche; M. Fauerbach; M. Girod; T. Glasmacher; S. E. Hirzebruch; J. K. Jewell; J. H. Kelley; K. W. Kemper; P. F. Mantica; D. J. Morrissey; L. A. Riley; J. A. Scarpaci; H. Scheit; M. Steiner

doi:10.1103/PhysRevC.60.034615

Proton scattering by short lived sulfur isotopes

F. Maréchal, T. Suomijärvi, Y. Blumenfeld, A. Azhari, E. Bauge, D. Bazin, J. A. Brown, P. D. Cottle, J. P. Delaroche, M. Fauerbach, M. Girod, T. Glasmacher, S. E. Hirzebruch, J. K. Jewell, J. H. Kelley, K. W. Kemper, P. F. Mantica, D. J. Morrissey, L. A. Riley, J. A. Scarpaci, H. Scheit, and M. Steiner

Phys. Rev. C 60, 034615 – Published 23 August 1999

Abstract

Elastic and inelastic proton scattering has been measured in inverse kinematics on the unstable nucleus $^{40} S$ . A phenomenological distorted wave Born approximation analysis yields a quadrupole deformation parameter $β_{2} = 0.35 \pm 0.05$ for the $2_{1}^{+}$ state. Consistent phenomenological and microscopic proton scattering analyses have been applied to all even-even sulfur isotopes from $A = 32$ to $A = 40$ . The second analysis used microscopic collective model densities and a modified Jeukenne-Lejeune-Mahaux nucleon-nucleon effective interaction. This microscopic analysis suggests the presence of a neutron skin in the heavy sulfur isotopes. The analysis is consistent with normalization values for $λ_{v}$ and $λ_{w}$ of 0.95 for both the real and imaginary parts of the Jeukenne-Lejeune-Mahaux potential.

Received 1 March 1999

DOI:https://doi.org/10.1103/PhysRevC.60.034615

Authors & Affiliations

F. Maréchal^1,*, T. Suomijärvi¹, Y. Blumenfeld¹, A. Azhari^2,3,†, E. Bauge⁴, D. Bazin², J. A. Brown^2,‡, P. D. Cottle⁵, J. P. Delaroche⁴, M. Fauerbach^2,3,*, M. Girod⁴, T. Glasmacher^2,3, S. E. Hirzebruch¹, J. K. Jewell^5,§, J. H. Kelley^1,∥, K. W. Kemper⁵, P. F. Mantica^2,6, D. J. Morrissey^2,6, L. A. Riley^5,¶, J. A. Scarpaci¹, H. Scheit^2,3,**, and M. Steiner²

¹Institut de Physique Nucléaire, IN2P3-CNRS, F-91406 Orsay, France
²National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824
³Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824
⁴Commissariat à l’Energie Atomique, Service de Physique Nucléaire, Boîte Postale 12, F-91680 Bruyères-le-Châtel, France
⁵Department of Physics, Florida State University, Tallahassee, Florida 32306
⁶Department of Chemistry, Michigan State University, East Lansing, Michigan 48824

^*Present address: Dept. of Physics, Florida State University, Tallahassee, FL 32306.
^†Present address: Cyclotron Institute, Texas A&M University, College Station, TX 77843.
^‡Present address: Dept. of Physics, Millikin University, Decatur, IL 62522.
^§Present address: Idaho National Engineering Laboratory, Idaho Falls, ID 83415.
^∥Present address: TUNL, Duke University, Durham, NC 27708.
^¶Present address: Dept. of Physics and Astronomy, Earlham College, Richmond, IN 47374.
^**Present address: Max Planck Institut für Kernphysik, D-69029 Heidelberg, Germany.

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Vol. 60, Iss. 3 — September 1999

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