Breakup of weakly bound 17F well above the coulomb barrier

J. F. Liang; J. R. Beene; H. Esbensen; A. Galindo-Uribarri; J. Gomez del Campo; C. J. Gross; M. L. Halbert; P. E. Mueller; D. Shapira; D. W. Stracener; R. L. Varner

doi:10.1016/S0370-2693(00)01016-9

Breakup of weakly bound ¹⁷F well above the coulomb barrier

J. F. Liang, J. R. Beene, H. Esbensen, A. Galindo-Uribarri, J. Gomez del Campo, C. J. Gross, M. L. Halbert, P. E. Mueller, D. Shapira, D. W. Stracener, R. L. Varner

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

The breakup of radioactive ¹⁷F into a proton and ¹⁶O was measured by bombarding ²⁰⁸Pb with 170 MeV ¹⁷F. The angular correlations of the fragments and the energy distributions of the protons suggest that the dominant breakup mechanism is a direct process in which a proton is excited into the low energy continuum above the breakup threshold. The breakup cross section measured near the grazing angle is 6.6 ± 0.7 mb/sr for analysis with postacceleration considered and 3.9 ± 0.4 mb/sr without postacceleration. This cross section is small compared to the fusion cross section at energies near the Coulomb barrier, so the breakup can have little influence on the fusion process. (C) 2000 Elsevier Science B.V.

Original language	English
Pages (from-to)	23-28
Number of pages	6
Journal	Physics Letters B
Volume	491
Issue number	1-2
DOIs	https://doi.org/10.1016/S0370-2693(00)01016-9
State	Published - Oct 12 2000

Funding

We wish to thank the HRIBF ion source development team and accelerator staff for providing excellent radioactive beams and support. We also thank A.C. Shotter and G.F. Bertsch for fruitful discussions. This research was supported in part by an appointment to the Oak Ridge National Laboratory Postdoctoral Research Associates Program administrated jointly by the Oak Ridge National Laboratory and the Oak Ridge Institute for Science and Education (ORISE). The ORISE is supported by the US Department of Energy under contract number DE-AC05-760R00033. Research at the Oak Ridge National Laboratory is supported by the US Department of Energy under contract DE-AC05-00OR22725 with UT-Battelle, LLC. One of us (H.E.) was supported by the US Department of Energy, Nuclear Physics Division, under Contract No. W-31-109-ENG-38.

Keywords

Breakup with weakly bound nuclei
Fusion
Radioactive ion beam

Access to Document

10.1016/S0370-2693(00)01016-9

Cite this

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title = "Breakup of weakly bound 17F well above the coulomb barrier",

abstract = "The breakup of radioactive 17F into a proton and 16O was measured by bombarding 208Pb with 170 MeV 17F. The angular correlations of the fragments and the energy distributions of the protons suggest that the dominant breakup mechanism is a direct process in which a proton is excited into the low energy continuum above the breakup threshold. The breakup cross section measured near the grazing angle is 6.6 ± 0.7 mb/sr for analysis with postacceleration considered and 3.9 ± 0.4 mb/sr without postacceleration. This cross section is small compared to the fusion cross section at energies near the Coulomb barrier, so the breakup can have little influence on the fusion process. (C) 2000 Elsevier Science B.V.",

keywords = "Breakup with weakly bound nuclei, Fusion, Radioactive ion beam",

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T1 - Breakup of weakly bound 17F well above the coulomb barrier

AU - Liang, J. F.

AU - Beene, J. R.

AU - Esbensen, H.

AU - Galindo-Uribarri, A.

AU - Gomez del Campo, J.

AU - Gross, C. J.

AU - Halbert, M. L.

AU - Mueller, P. E.

AU - Shapira, D.

AU - Stracener, D. W.

AU - Varner, R. L.

PY - 2000/10/12

Y1 - 2000/10/12

N2 - The breakup of radioactive 17F into a proton and 16O was measured by bombarding 208Pb with 170 MeV 17F. The angular correlations of the fragments and the energy distributions of the protons suggest that the dominant breakup mechanism is a direct process in which a proton is excited into the low energy continuum above the breakup threshold. The breakup cross section measured near the grazing angle is 6.6 ± 0.7 mb/sr for analysis with postacceleration considered and 3.9 ± 0.4 mb/sr without postacceleration. This cross section is small compared to the fusion cross section at energies near the Coulomb barrier, so the breakup can have little influence on the fusion process. (C) 2000 Elsevier Science B.V.

AB - The breakup of radioactive 17F into a proton and 16O was measured by bombarding 208Pb with 170 MeV 17F. The angular correlations of the fragments and the energy distributions of the protons suggest that the dominant breakup mechanism is a direct process in which a proton is excited into the low energy continuum above the breakup threshold. The breakup cross section measured near the grazing angle is 6.6 ± 0.7 mb/sr for analysis with postacceleration considered and 3.9 ± 0.4 mb/sr without postacceleration. This cross section is small compared to the fusion cross section at energies near the Coulomb barrier, so the breakup can have little influence on the fusion process. (C) 2000 Elsevier Science B.V.

KW - Breakup with weakly bound nuclei

KW - Fusion

KW - Radioactive ion beam

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