Photo-Production of <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi mathvariant="normal">N</mi></mrow><mrow><mn>17</mn></mrow></msup></mrow></math></span>

W. E. Stephens; J. Halpern; R. Sher

doi:10.1103/PhysRev.82.511

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Photo-Production of $N^{17}$

W. E. Stephens^*, J. Halpern^*, and R. Sher^*

Physics Department, University of Pennsylvania, Philadelphia, Pennsylvania

^*This research was supported by the joint program of the ONR and AEC.

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Phys. Rev. 82, 511 – Published 15 May, 1951

DOI: https://doi.org/10.1103/PhysRev.82.511

Abstract

The delayed neutron activity associated with $N^{17}$ has been produced by the x-ray irradiation of oxygen, the reaction being identified as $O^{18} (γ, p) N^{17}$ . The threshold for this transmutation has been observed as 16.35±0.2 Mev, and the integrated cross section calculated to be 0.15±0.1 Mev-barn. The $N^{17}$ produced was identified by measuring the neutron activity half-life as 4.15±0.1 sec.

References (18)

Knable, Lawrence, Leith, Mayer, and Thornton, Phys. Rev. 74, 1217 (1948)
L. W. Alvarez, Phys. Rev. 74, 1217 (1948)
L. W. Alvarez, Phys. Rev. 75, 1127 (1949)
E. Hayward, Phys. Rev. 75, 917 (1949)
W. W. Chupp and E. M. McMillan, Phys. Rev. 74, 1217 (1948)
Sun, Jennings, Shoupp, and Allen, Phys. Rev. 75, 1302 (1949)
Charpie, Sun, Jennings, and Nechaj, Phys. Rev. 76, 1255 (1949)
Sher, Halpern, and Stephens, Phys. Rev. 79, 241 (1950)
Omitted endnote
McIlhinney, Hanson, Becker, Duffield, and Diven, Phys. Rev. 75, 542 (1949)
Katz, Johns, Douglas, and Haslam, Phys. Rev. 80, 131 (1950)
L. Rosenfeld, Nuclear Forces II (Interscience Publishers, New York, 1949)
G. C. Baldwin and H. W. Koch, Phys. Rev. 67, 1 (1945)
Omitted endnote
A. K. Mann and J. Halpern, Phys. Rev. 80, 470 (1950)
H. Waffler and S. Younis, Helv. Phys. Acta 22, 614 (1949)
J. S. Levinger and H. A. Bethe, Phys. Rev. 78, 115 (1950)
M. Goldhaber and E. Teller, Phys. Rev. 74, 1046 (1948)

[c1] Knable, Lawrence, Leith, Mayer, and Thornton, Phys. Rev. 74, 1217 (1948)

[c2] L. W. Alvarez, Phys. Rev. 74, 1217 (1948)

[c3] L. W. Alvarez, Phys. Rev. 75, 1127 (1949)

[c4] E. Hayward, Phys. Rev. 75, 917 (1949)

[c5] W. W. Chupp and E. M. McMillan, Phys. Rev. 74, 1217 (1948)

[c6] Sun, Jennings, Shoupp, and Allen, Phys. Rev. 75, 1302 (1949)

[c7] Charpie, Sun, Jennings, and Nechaj, Phys. Rev. 76, 1255 (1949)

[c8] Sher, Halpern, and Stephens, Phys. Rev. 79, 241 (1950)

[c9] Omitted endnote

[c10] McIlhinney, Hanson, Becker, Duffield, and Diven, Phys. Rev. 75, 542 (1949)

[c11] Katz, Johns, Douglas, and Haslam, Phys. Rev. 80, 131 (1950)

[c12] L. Rosenfeld, Nuclear Forces II (Interscience Publishers, New York, 1949)

[c13] G. C. Baldwin and H. W. Koch, Phys. Rev. 67, 1 (1945)

[c14] Omitted endnote

[c15] A. K. Mann and J. Halpern, Phys. Rev. 80, 470 (1950)

[c16] H. Waffler and S. Younis, Helv. Phys. Acta 22, 614 (1949)

[c17] J. S. Levinger and H. A. Bethe, Phys. Rev. 78, 115 (1950)

[c18] M. Goldhaber and E. Teller, Phys. Rev. 74, 1046 (1948)

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Photo-Production of $N^{17}$

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Photo-Production of N17

Abstract

References (18)

Photo-Production of $N^{17}$