Elastic scattering of + and - from Ca40 at 64.8 MeV

S. H. Dam; R. D. Edge; B. M. Preedom; M. Hamm; R. L. Burman; R. Carlini; R. P. Redwine; M. A. Yates; M. Blecher; K. Gotow; F. E. Bertrand; E. E. Gross; M. A. Moinester

doi:10.1103/PhysRevC.25.2574

Elastic scattering of + and - from Ca40 at 64.8 MeV

S. H. Dam^*, R. D. Edge, B. M. Preedom, M. Hamm, R. L. Burman, R. Carlini, R. P. Redwine, M. A. Yates, M. Blecher, K. Gotow, F. E. Bertrand, E. E. Gross, M. A. Moinester

^*Corresponding author for this work

School of Physics and Astronomy

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Abstract

Angular distributions of + and - elastic scattering on Ca40 at 64.8 MeV are presented. The data are analyzed using a first-order, nonlocal optical model based on a Kisslinger t matrix with an off-shell form factor. This model is unable to fit the data for any value of the off-shell parameter ± unless the nuclear matter radius is allowed to vary from that derived from electron scattering. The resulting best-fit radii are as much as 0.40 fm larger than the electron scattering value for + and 0.55 fm larger for -. For a given ± the - best fit radius is also consistently larger by about 0.2 fm than that for +. In addition, the fits show no significant preference for any value of ± between 400 and 900 MeV/c. Inclusion of the normally omitted second-order potential terms in the optical model does not significantly alter the results. NUCLEAR REACTIONS + and - elastic scattering from Ca40 at 64.8 MeV; angular distributions, 15°<lab<127°; optical model analysis.

Original language	English
Pages (from-to)	2574-2582
Number of pages	9
Journal	Physical Review C - Nuclear Physics
Volume	25
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.25.2574
State	Published - 1982

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title = "Elastic scattering of + and - from Ca40 at 64.8 MeV",

abstract = "Angular distributions of + and - elastic scattering on Ca40 at 64.8 MeV are presented. The data are analyzed using a first-order, nonlocal optical model based on a Kisslinger t matrix with an off-shell form factor. This model is unable to fit the data for any value of the off-shell parameter ± unless the nuclear matter radius is allowed to vary from that derived from electron scattering. The resulting best-fit radii are as much as 0.40 fm larger than the electron scattering value for + and 0.55 fm larger for -. For a given ± the - best fit radius is also consistently larger by about 0.2 fm than that for +. In addition, the fits show no significant preference for any value of ± between 400 and 900 MeV/c. Inclusion of the normally omitted second-order potential terms in the optical model does not significantly alter the results. NUCLEAR REACTIONS + and - elastic scattering from Ca40 at 64.8 MeV; angular distributions, 15°",

author = "Dam, {S. H.} and Edge, {R. D.} and Preedom, {B. M.} and M. Hamm and Burman, {R. L.} and R. Carlini and Redwine, {R. P.} and Yates, {M. A.} and M. Blecher and K. Gotow and Bertrand, {F. E.} and Gross, {E. E.} and Moinester, {M. A.}",

year = "1982",

doi = "10.1103/PhysRevC.25.2574",

language = "אנגלית",

volume = "25",

pages = "2574--2582",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

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T1 - Elastic scattering of + and - from Ca40 at 64.8 MeV

AU - Dam, S. H.

AU - Edge, R. D.

AU - Preedom, B. M.

AU - Hamm, M.

AU - Burman, R. L.

AU - Carlini, R.

AU - Redwine, R. P.

AU - Yates, M. A.

AU - Blecher, M.

AU - Gotow, K.

AU - Bertrand, F. E.

AU - Gross, E. E.

AU - Moinester, M. A.

PY - 1982

Y1 - 1982

N2 - Angular distributions of + and - elastic scattering on Ca40 at 64.8 MeV are presented. The data are analyzed using a first-order, nonlocal optical model based on a Kisslinger t matrix with an off-shell form factor. This model is unable to fit the data for any value of the off-shell parameter ± unless the nuclear matter radius is allowed to vary from that derived from electron scattering. The resulting best-fit radii are as much as 0.40 fm larger than the electron scattering value for + and 0.55 fm larger for -. For a given ± the - best fit radius is also consistently larger by about 0.2 fm than that for +. In addition, the fits show no significant preference for any value of ± between 400 and 900 MeV/c. Inclusion of the normally omitted second-order potential terms in the optical model does not significantly alter the results. NUCLEAR REACTIONS + and - elastic scattering from Ca40 at 64.8 MeV; angular distributions, 15°

AB - Angular distributions of + and - elastic scattering on Ca40 at 64.8 MeV are presented. The data are analyzed using a first-order, nonlocal optical model based on a Kisslinger t matrix with an off-shell form factor. This model is unable to fit the data for any value of the off-shell parameter ± unless the nuclear matter radius is allowed to vary from that derived from electron scattering. The resulting best-fit radii are as much as 0.40 fm larger than the electron scattering value for + and 0.55 fm larger for -. For a given ± the - best fit radius is also consistently larger by about 0.2 fm than that for +. In addition, the fits show no significant preference for any value of ± between 400 and 900 MeV/c. Inclusion of the normally omitted second-order potential terms in the optical model does not significantly alter the results. NUCLEAR REACTIONS + and - elastic scattering from Ca40 at 64.8 MeV; angular distributions, 15°

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JO - Physical Review C - Nuclear Physics

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ER -

Elastic scattering of + and - from Ca40 at 64.8 MeV

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