Export citation

Export citation

Choose format for download:

Download Citation
  • Access by Xinjiang University

Octupole and Quadrupole Transition Rates in F19 from Scattering of 15-MeV Deuterons

D. Dehnhard and Norton M. Hintz

  • Williams Laboratory of Nuclear Physics, University of Minnesota, Minneapolis, Minnesota 55455

Phys. Rev. C 1, 460 – Published 1 February, 1970

DOI: https://doi.org/10.1103/PhysRevC.1.460

Abstract

Angular distributions of 15.0-MeV deuterons scattered by F19 were measured between θlab=18° and 85°. Inelastic groups leaving F19 in its five lowest-lying excited states were observed using two position-sensitive detectors placed in the focal plane of a split-pole spectrometer. The elastic-scattering cross section was analyzed using an optical model. B(E2) values for the transitions from the 52+(0.197-MeV) and the 32+(1.56-MeV) states to the ground state were found to be 9±3 and 10±3 W.u. (single-particle units). They were calculated from the β2 deformation parameter extracted from a distorted-wave Born-approximation (DWBA) analysis using a complex form factor derived from the optical-model analysis with a surface-absorption term. These results are in good agreement with results obtained from inelastic proton scattering and from Coulomb-excitation experiments. However, the B(E3) value for the 5212+ transition from the 1.35-MeV state was found to be 1.4±0.6 W.u. as compared to the upper limit of 3.8±0.6 W.u. from a (p, p) experiment, and to 12.0±4.0 and 7.6±1.3 W.u. from two different Coulomb-excitation experiments. The results are compared to various model predictions.

References (28)

  1. W. T. Pinkston and G. R. Satchler, Nucl. Phys. 27, 270 (1961) G. R. Satchler, ibid. 77, 481 (1966)
  2. G. M. Crawley and G. T. Garvey, Phys. Rev. 167, 1070 (1968)
  3. A. E. Litherland, M. A. Clark, and C. Broude, Phys. Letters 3, 204 (1963)
  4. S. J. Skorka, J. Hertel, and T. W. Retz-Schmidt, Nucl. Data 2, 347 (1966)
  5. T. K. Alexander, O. Hausser, K. W. Allen, and A. E. Litherland, Bull. Phys. Soc. 14, 123 (1969) Can. J. Phys. 47, 2335 (1969)
  6. H. F. Lutz, J. J. Wesolowski, L. F. Hansen, and S. F. Eccles, Phys. Letters 20, 410 (1966)
  7. D. Newton, A. B. Legg, and G. L. Salmon, Nucl. Phys. 55, 353 (1964)
  8. J. E. Spencer and H. A. Enge, Nucl. Instr. Methods 49, 181 (1967)
  9. P. H. Debenham, D. Dehnhard, and R. W. Goodwin, Nucl. Instr. Methods 67, 288 (1969)
  10. L. J. Denes, W. W. Daehnick, and R. M. Drisko, Phys. Rev. 148, 1097 (1966) L. J. Denes, Ph.D. thesis, University of Pittsburgh, 1965 (unpublished)
  11. G. J. Pyle, J. H. Williams Laboratory Internal Report, University of Minnesota (unpublished)
  12. C. M. Perey and F. G. Perey, Phys. Rev. 132, 755 (1963)
  13. J. K. Dickens, F. G. Perey, and G. R. Satchler, Nucl. Phys. 73, 529 (1965)
  14. P. D. Kunz (private communication)
  15. K. Alder et al., Rev. Mod. Phys. 28, 432 (1956)
  16. D. H. Wilkinson, in Nuclear Spectroscopy (Academic Press Inc., New York, 1960), Part B, p. 852
  17. E. R. Flynn and Louis Rosen, Phys. Rev. 153, 1228 (1967) E. R. Flynn and R. H. Bassel, Phys. Rev. Letters 15, 168 (1965)
  18. F. Hintenberget, G. Mairle, U. Schmidt-Rohr, G. J. Wagner, and P. Turek, Nucl. Phys. A115, 570 (1968)
  19. B. G. Harvey, J. R. Meriwether, J. Mahoney, A. Bussiere de Nercy, and D. J. Horen, Phys. Rev. 146, 712 (1966)
  20. H. G. Benson and B. Flowers, Nucl. Phys. A126, 305 (1969)
  21. A. Arima, H. Horiuchi, and T. Sebe, Phys. Letters 24B, 129 (1967)
  22. G. R. Satchler, Nucl. Phys. A100, 481 (1967)
  23. S. G. Nilsson, Kgl. Danske Videnskab. Selskab, Mat.-Fys. Medd. 29, No. 16 (1955)
  24. E. B. Paul, Phil. Mag. 2, 311 (1957)
  25. J. P. Elliot and B. H. Flowers, Proc. Roy. Soc. (London) A229, 536 (1955)
  26. M. Harvey, Nucl. Phys. 52, 542 (1964)
  27. T. K. Alexander and K. W. Allen, Can. J. Phys. 43, 1563 (1965)
  28. H. J. Krappe and U. Wille, Nucl. Phys. A124, 641 (1969)

Outline

Information

Sign In to Your Journals Account

Filter

Filter

Article Lookup

Enter a citation