Electron-Excitation—Gamma-Decay Reactions in Heavy Nuclei

T. A. Griffy; Don Whitehill

doi:10.1103/PhysRevC.2.441

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Electron-Excitation—Gamma-Decay Reactions in Heavy Nuclei

T. A. Griffy and Don Whitehill

Department of Physics, The University of Texas, Austin, Texas 78712

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Phys. Rev. C 2, 441 – Published 1 August, 1970

DOI: https://doi.org/10.1103/PhysRevC.2.441

Abstract

The feasibility of using the reactions ${e + N (ε_{i}, J_{i}) \to e^{'} +, N (ε_{f}, J_{f})} {↘ N (ε_{ff}, J_{ff}) + γ}$ to investigate low-lying states of heavy nuclei is discussed. By detecting the decay photon, the problem of poor energy resolution for high-energy electrons can be circumvented. The formalism for the $e^{'} - γ$ coincidence cross section is given. The Coulomb distortion of the electron wave functions, which is important for heavy nuclei, is taken into account. Results for the $e^{'} - γ$ coincidence cross section and the $γ$ -detection cross section for several nuclei are given. The $e - γ$ coincidence cross section appears to be feasible when superconducting accelerators became operational. The $γ$ -detection cross section offers a method for investigating low-lying states with present-day accelerators.

References (13)

W. C. Barber, Ann. Rev. Nucl. Sci. 21, 1 (1962)
T. deForest, Jr., and J. D. Walecka, Advan. Phys. 15, 1 (1966)
H. A. Schwettman, private communication
D. F. Hubbard and M. E. Rose, Nucl. Phys. 84, 377 (1966)
H. L. Acker and M. E. Rose, Ann. Phys. (N.Y.) 44, 336 (1967)
D. Drechsel and H. Überall, Phys. Rev. 181, 1383 (1969)
T. A. Griffy, D. S. Onley, J. T. Reynolds, and L. C. Biedenharn, Phys. Rev. 128, 833 (1962)
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[8] p. 441 of [8]
P. H. Pratt, J. D. Walecka, and T. A. Griffy, Nucl. Phys. 64, 677 (1965)
J. F. Ziegler, Yale University Report No. Yale-2726E-49, 1967 (unpublished)
J. D. Bjorken and S. D. Drell, Relativistic Quantum Mechanics (McGraw-Hill Book Company, Inc., New York, 1964)
M. E. Rose, Relativistic Electron Theory (John Wiley & Sons, Inc., New York, 1961)

[c1] W. C. Barber, Ann. Rev. Nucl. Sci. 21, 1 (1962)

[c2] T. deForest, Jr., and J. D. Walecka, Advan. Phys. 15, 1 (1966)

[c3] H. A. Schwettman, private communication

[c4] D. F. Hubbard and M. E. Rose, Nucl. Phys. 84, 377 (1966)

[c5] H. L. Acker and M. E. Rose, Ann. Phys. (N.Y.) 44, 336 (1967)

[c6] D. Drechsel and H. Überall, Phys. Rev. 181, 1383 (1969)

[c7] T. A. Griffy, D. S. Onley, J. T. Reynolds, and L. C. Biedenharn, Phys. Rev. 128, 833 (1962)

[c8] K. Alder, A. Bohr, T. Huus, B. Mottelson, and A. Winther, Rev. Mod. Phys. 28, 432 (1956)

[c9] [8] p. 441 of [8]

[c10] P. H. Pratt, J. D. Walecka, and T. A. Griffy, Nucl. Phys. 64, 677 (1965)

[c11] J. F. Ziegler, Yale University Report No. Yale-2726E-49, 1967 (unpublished)

[c12] J. D. Bjorken and S. D. Drell, Relativistic Quantum Mechanics (McGraw-Hill Book Company, Inc., New York, 1964)

[c13] M. E. Rose, Relativistic Electron Theory (John Wiley & Sons, Inc., New York, 1961)

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Electron-Excitation—Gamma-Decay Reactions in Heavy Nuclei

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