All JournalsPhysics Magazine

Export citation

Export citation

Choose format for download:

Download Citation
  • Access by Xinjiang University

Differential Cross Sections for Triton-Induced Reactions on N14

R. B. Schwartz*, H. D. Holmgren, L. M. Cameron, and A. R. Knudson

  • Nucleonics Division, U. S. Naval Research Laboratory, Washington, D. C.

  • *Present address: Nuclear Physics Branch, National Bureau of Standards, Washington, D. C.
  • Present address: Physics Department, University of Maryland, College Park, Maryland.

Phys. Rev. 134, B577 – Published 11 May, 1964

DOI: https://doi.org/10.1103/PhysRev.134.B577

Abstract

Differential cross sections have been measured as functions of angle and bombarding energy in the region from 1 to 2 MeV for the following reactions: (1) N14(t, t)N14; (2) N14(t, α)C13 going to the ground state and the 3.09-MeV state in C13; (3) N14(t, d)N15 going to the ground state of N15; and (4) N14(t, p)N16 going to the ground state and the 0.120-, 0.295-, and 0.392-MeV states of N16. The total cross sections for the last three of these reactions at 2 MeV are: (2) 11 and 6 mb; (3) 48 mb; and (4) 7, 4, 9, and 8 mb, respectively. The energy and angular behavior of the differential cross sections suggest that most of these reactions proceed predominantly by direct interactions. The large absolute value of the cross section for the N14(t, do)N15 reaction, as well as the energy and angular behavior of the differential cross section, suggest that this reaction may proceed by a cluster exchange process. Distorted-wave Born approximation (DWBA) calculations provide satisfactory fits to the (t, αo) angular distribution, but not the (t, do). Plane-wave calculations including exchange stripping give more acceptable fits to the (t, do) data.

References (30)

  1. H. D. Holmgren, in Proceedings of the International School of Physics "Enrico Fermi" XV Course, edited by G. Racah (Academic Press Inc., New York, 1962), p. 223
  2. R. Middleton, in Proceedings of the International Symposium on Direct Interactions and Nuclear Reaction Mechanisms, Padua, edited by E. Clementel and C. Villi (Gordon and Breach, New York, 1963), p. 435
  3. D. A. Bromley, in Proceedings of the International Conference on Nuclear Structure, edited by D. A. Bromley and E. W. Vogt (University of Toronto Press, Toronto, 1960), p. 272
  4. G. D. Gutsche, H. D. Holmgren, L. M. Cameron, and R. L. Johnston, Phys. Rev. 125, 648 (1962)
  5. H. D. Holmgren and E. A. Wolicki, in Proceedings of the Rutherford Jubilee International Conference, Manchester, 1961, edited by J. B. Birks (Heywood and Company, Ltd., London, 1961), p. 541
  6. F. Ajzenberg-Selove and T. Lauritsen, in Landolt-Börnstein, Numerical Data and Functional Relationships in Science and Technology (Springer-Verlag, Berlin, 1961), New Series, Vol. 1/1
  7. R. B. Schwartz, L. M. Cameron, and H. D. Holmgren, Bull. Am. Phys. Soc. 6, 416 (1961) L. M. Cameron, H. D. Holmgren, and R. B. Schwartz, ibid. 6, 416 (1961) R. B. Schwartz, L. M. Cameron, and H. D. Holmgren, ibid. 7, 286 (1962)
  8. F. D. Louckes, Jr., Rev. Sci. Instr. 28, 468 (1957)
  9. Omitted endnote

  10. Omitted endnote

  11. M. G. Silbert, Phys. Rev. 127, 2113 (1962)
  12. C. D. Moak, A. Galonsky, R. L. Traughber, and C. M. Jones, Phys. Rev. 110, 1369 (1958)
  13. A. Gallman, D. E. Alburger, D. H. Wilkinson, and F. Hibou, Phys. Rev. 129, 1765 (1963)
  14. C. M. Huddleston, R. O. Lane, L. L. Lee, Jr., and F. P. Mooring, Phys. Rev. 117, 1055 (1960)
  15. ([7])
  16. D. H. Wilkinson, in Proceedings of the International Conference on Nuclear Structure, edited by D. A. Bromley and E. W. Vogt (University of Toronto Press, Toronto, 1960), p. 20
  17. R. H. Bassel, R. M. Drisko, and G. R. Satchler, Oak Ridge National Laboratory Report ORNL-3240, 1962 (unpublished)
  18. P. E. Hodgson, in Proceedings of the International Symposium on Direct Interactions and Nuclear Reaction Mechanisms, Padua, edited by E. Clementel and C. Villi (Gordon and Breach, New York, 1963), p. 103
  19. K. G. Standing, Phys. Rev. 101, 152 (1956) M. A. Nagarajan, Bull. Am. Phys. Soc. 7, 559 (1962) (private communication) W. W. True, Phys. Rev. 130, 1525 (1963)
  20. I. Talmi and I. Unna, Ann. Rev. Nucl. Sci. 10, 353 (1960)
  21. M. K. Bannerjee, in Nuclear Spectroscopy, edited by F. Ajzenberg-Selove (Academic Press, New York, 1960), Part B, p. 695 private communication
  22. G. E. Owen and L. Madansky, Phys. Rev. 105, 1766 (1957) S. Edwards, K. L. WarshLectures on the Theory of Direct Reactions, notes by , Florida State University, Tandem Van de Graaff Laboratory, Tallahassee, 1961 (unpublished) G. E. Owen, L. Madansky, S. Edwards, Phys. Rev. 113, 1575 (1959)
  23. D. R. Inglis, Phys. Rev. 126, 1789 (1962)
  24. B. G. Harvey and J. Cerny, Phys. Rev. 120, 2162 (1960)
  25. K. Wildermuth (private communication)
  26. G. C. Phillips and T. A. Tombrello, Nucl. Phys. 19, 555 (1960)
  27. F. de S. Barros, P. D. Forsyth, A. A. Jaffe, and I. J. Taylor, Proc. Phys. Soc. (London) 77, 853 (1961)
  28. P. D. Forsyth, F. de S. Barros, A. A. Jaffe, I. J. Taylor, and S. Ramavataram, Proc. Phys. Soc. (London) 75, 291 (1960)
  29. N. Kawai, J. Phys. Soc. Japan 16, 157 (1961)
  30. J. P. Elliott and B. H. Flowers, Proc. Roy. Soc. (London) A242, 57 (1957)

Outline

Information

Sign In to Your Journals Account

Filter

Filter

Article Lookup

Enter a citation