Elastic and inelastic scattering of 120 MeV 18O from 208Pb and the spin alignment of the 2+ state of 18O

E. E. Gross; J. R. Beene; K. A. Erb; M. P. Fewell; D. Shapira; M. J. Rhoades-Brown; G. R. Satchler; C. E. Thorn

doi:10.1016/0375-9474(83)90533-X

Elastic and inelastic scattering of 120 MeV ¹⁸O from ²⁰⁸Pb and the spin alignment of the 2⁺ state of ¹⁸O

E. E. Gross, J. R. Beene, K. A. Erb, M. P. Fewell, D. Shapira, M. J. Rhoades-Brown, G. R. Satchler, C. E. Thorn

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14 Scopus citations

Abstract

The elastic and inelastic scattering of ¹⁸O ions at 120 MeV from a target of ²⁰⁸Pb have been studied. Cross sections for excitation of the 2⁺ state at 1.982 MeV in ¹⁸O and of the 3^- state at 2.61 MeV in ²⁰⁸Pb were measured. In addition, the populations of the m-substates for the ¹⁸O excitation were deduced from the Doppler-broadened line shapes. The data were subjected to a coupled-channels analysis using either Woods-Saxon or folding-model potentials. In addition, the ¹⁸O excitation was found to be described very well by use of a semi-microscopic model. The analyses consistently indicated the presence of a positive static hexadecapole moment of several e · fm⁴ for the 2⁺ state of ¹⁸O. The m-substate population distributions were found to be better fitted if a vector spin-orbit coupling was introduced for the 2⁺ state of ¹⁸O with a sign opposite to that for the nucleon-nucleus case.

Original language	English
Pages (from-to)	362-396
Number of pages	35
Journal	Nuclear Physics A
Volume	401
Issue number	2
DOIs	https://doi.org/10.1016/0375-9474(83)90533-X
State	Published - 6 Jun 1983
Externally published	Yes

Keywords

Nuclear reactions

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1016/0375-9474(83)90533-X

Cite this

@article{acfd14e0a7a84f3eaebe5e2100fd6aba,

title = "Elastic and inelastic scattering of 120 MeV 18O from 208Pb and the spin alignment of the 2+ state of 18O",

abstract = "The elastic and inelastic scattering of 18O ions at 120 MeV from a target of 208Pb have been studied. Cross sections for excitation of the 2+ state at 1.982 MeV in 18O and of the 3- state at 2.61 MeV in 208Pb were measured. In addition, the populations of the m-substates for the 18O excitation were deduced from the Doppler-broadened line shapes. The data were subjected to a coupled-channels analysis using either Woods-Saxon or folding-model potentials. In addition, the 18O excitation was found to be described very well by use of a semi-microscopic model. The analyses consistently indicated the presence of a positive static hexadecapole moment of several e · fm4 for the 2+ state of 18O. The m-substate population distributions were found to be better fitted if a vector spin-orbit coupling was introduced for the 2+ state of 18O with a sign opposite to that for the nucleon-nucleus case.",

keywords = "Nuclear reactions",

author = "Gross, {E. E.} and Beene, {J. R.} and Erb, {K. A.} and Fewell, {M. P.} and D. Shapira and Rhoades-Brown, {M. J.} and Satchler, {G. R.} and Thorn, {C. E.}",

note = "Funding Information: We thank J. Raynal for helpful correspondence concerning the code ECIS, and S. Landowne for useful conversations about the semi-microscopic model. The work at Oak Ridge National Laboratory was supported by the US Department of Energy under contract W-7405-eng-26 with Union Carbide Corporation and at the Brookhaven National Laboratory under contract DE-AC02-76CHOOO 16.",

year = "1983",

month = jun,

day = "6",

doi = "10.1016/0375-9474(83)90533-X",

language = "English",

volume = "401",

pages = "362--396",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier",

number = "2",

}

TY - JOUR

T1 - Elastic and inelastic scattering of 120 MeV 18O from 208Pb and the spin alignment of the 2+ state of 18O

AU - Gross, E. E.

AU - Beene, J. R.

AU - Erb, K. A.

AU - Fewell, M. P.

AU - Shapira, D.

AU - Rhoades-Brown, M. J.

AU - Satchler, G. R.

AU - Thorn, C. E.

N1 - Funding Information: We thank J. Raynal for helpful correspondence concerning the code ECIS, and S. Landowne for useful conversations about the semi-microscopic model. The work at Oak Ridge National Laboratory was supported by the US Department of Energy under contract W-7405-eng-26 with Union Carbide Corporation and at the Brookhaven National Laboratory under contract DE-AC02-76CHOOO 16.

PY - 1983/6/6

Y1 - 1983/6/6

N2 - The elastic and inelastic scattering of 18O ions at 120 MeV from a target of 208Pb have been studied. Cross sections for excitation of the 2+ state at 1.982 MeV in 18O and of the 3- state at 2.61 MeV in 208Pb were measured. In addition, the populations of the m-substates for the 18O excitation were deduced from the Doppler-broadened line shapes. The data were subjected to a coupled-channels analysis using either Woods-Saxon or folding-model potentials. In addition, the 18O excitation was found to be described very well by use of a semi-microscopic model. The analyses consistently indicated the presence of a positive static hexadecapole moment of several e · fm4 for the 2+ state of 18O. The m-substate population distributions were found to be better fitted if a vector spin-orbit coupling was introduced for the 2+ state of 18O with a sign opposite to that for the nucleon-nucleus case.

AB - The elastic and inelastic scattering of 18O ions at 120 MeV from a target of 208Pb have been studied. Cross sections for excitation of the 2+ state at 1.982 MeV in 18O and of the 3- state at 2.61 MeV in 208Pb were measured. In addition, the populations of the m-substates for the 18O excitation were deduced from the Doppler-broadened line shapes. The data were subjected to a coupled-channels analysis using either Woods-Saxon or folding-model potentials. In addition, the 18O excitation was found to be described very well by use of a semi-microscopic model. The analyses consistently indicated the presence of a positive static hexadecapole moment of several e · fm4 for the 2+ state of 18O. The m-substate population distributions were found to be better fitted if a vector spin-orbit coupling was introduced for the 2+ state of 18O with a sign opposite to that for the nucleon-nucleus case.

KW - Nuclear reactions

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