Resonances in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi mathvariant="normal">Li</mi></mrow><mrow><mn>7</mn></mrow></msup></mrow><mo>(</mo><mi>p</mi><mo>,</mo><mi> </mi><mi>n</mi><mo>)</mo><mrow><msup><mrow><mi mathvariant="normal">Be</mi></mrow><mrow><mn>7</mn></mrow></msup></mrow></math></span>

Robert K. Adair

doi:10.1103/PhysRev.96.709

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Resonances in ${Li}^{7} (p, n) {Be}^{7}$

Robert K. Adair

University of Wisconsin, Madison, Wisconsin, and Brookhaven National Laboratory, Upton, New York

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Phys. Rev. 96, 709 – Published 1 November, 1954

DOI: https://doi.org/10.1103/PhysRev.96.709

Abstract

An investigation of experimental data concerning the $Li (p, n)$ reaction indicates that the resonance at 2.25-Mev proton energy is due to the influence of a spin 3, isotopic spin 1, even parity level of ${Be}^{8}$ , 19.2 Mev above the ground state, and that the background reaction intensity is predominantly the result of a spin-1 state of odd parity, and a spin-2 state of odd parity and isotopic spin 0. Cross sections, angular distributions, and neutron polarizations calculated on this basis are in good agreement with previous experimental measurements of these quantities.

The neutron and proton widths of the isotropic spin-1 state in ${Be}^{8}$ are related to the neutron width of the corresponding isotopic-spin-1 state of ${Li}^{8}$ , 2.3 Mev above the ground state, in a manner consistent with the transition probability relationships expected of a nuclear isotopic spin multiplet.

References (21)

R. Taschek and N. Hemmendinger, Phys. Rev. 74, 373 (1948)
G. Breit and I. Bloch, Phys. Rev. 74, 397 (1948)
T. Teichmann and E. P. Wigner, Phys. Rev. 87, 123 (1952)
L. A. Radicati, Proc. Phys. Soc. (London) A66, 139 (1953)
R. K. Adair, Phys. Rev. 87, 1041 (1952)
M. Gell-Mann and V. Telegdi, Phys. Rev. 91, 169 (1953)
R. K. Adair, Phys. Rev. 79, 1018 (1950)
P. Stelson and W. Preston, Phys. Rev. 84, 162 (1951)
[1]
G. C. Hanna at the Birmingham Conference on Nuclear Physics, July, 1953 (unpublished)
Heydenburg, Hudson, Inglis, and Whitehead, Phys. Rev. 73, 241 (1948)
E. Wigner and L. Eisenbud, Phys. Rev. 72, 29 (1948)
Bloch, Hull, Broyles, Bouricius, Freeman, and Breit, Revs. Modern Phys. 23, 147 (1951)
R. F. Christy and R. Latter, Revs. Modern Phys. 20, 185 (1948)
R. G. Thomas, Phys. Rev. 81, 148 (1951)
J. M. Blatt and L. C. Biedenharn, Revs. Modern Phys. 24, 258 (1952)
[11]
E. U. Condon and G. H. Shortley, Theory of Atomic Spectra (Cambridge University Press, Cambridge, 1935)
Levine, Bender, McGruer, and Vogelsang, Phys. Rev. 95, 640 (1954)
Omitted endnote
Adair, Darden, and Fields, Phys. Rev. 96, 503 (1954)

[c1] R. Taschek and N. Hemmendinger, Phys. Rev. 74, 373 (1948)

[c2] G. Breit and I. Bloch, Phys. Rev. 74, 397 (1948)

[c3] T. Teichmann and E. P. Wigner, Phys. Rev. 87, 123 (1952)

[c4] L. A. Radicati, Proc. Phys. Soc. (London) A66, 139 (1953)

[c5] R. K. Adair, Phys. Rev. 87, 1041 (1952)

[c6] M. Gell-Mann and V. Telegdi, Phys. Rev. 91, 169 (1953)

[c7] R. K. Adair, Phys. Rev. 79, 1018 (1950)

[c8] P. Stelson and W. Preston, Phys. Rev. 84, 162 (1951)

[c9] [1]

[c10] G. C. Hanna at the Birmingham Conference on Nuclear Physics, July, 1953 (unpublished)

[c11] Heydenburg, Hudson, Inglis, and Whitehead, Phys. Rev. 73, 241 (1948)

[c12] E. Wigner and L. Eisenbud, Phys. Rev. 72, 29 (1948)

[c13] Bloch, Hull, Broyles, Bouricius, Freeman, and Breit, Revs. Modern Phys. 23, 147 (1951)

[c14] R. F. Christy and R. Latter, Revs. Modern Phys. 20, 185 (1948)

[c15] R. G. Thomas, Phys. Rev. 81, 148 (1951)

[c16] J. M. Blatt and L. C. Biedenharn, Revs. Modern Phys. 24, 258 (1952)

[c17] [11]

[c18] E. U. Condon and G. H. Shortley, Theory of Atomic Spectra (Cambridge University Press, Cambridge, 1935)

[c19] Levine, Bender, McGruer, and Vogelsang, Phys. Rev. 95, 640 (1954)

[c20] Omitted endnote

[c21] Adair, Darden, and Fields, Phys. Rev. 96, 503 (1954)

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Resonances in ${Li}^{7} (p, n) {Be}^{7}$