Short-Range, High-Momentum Effects in the Reaction <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">O</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>16</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow><mo>(</mo><mi>γ</mi><mo>,</mo><mi> </mi><mrow><msub><mrow><mi>p</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow><mo>)</mo></math></span> for <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>E</mi></mrow><mrow><mi>γ</mi></mrow></msub></mrow><mo>=</mo><mn>100</mn><mo>−</mo><mn>300</mn><mn></mn></math></span> MeV

J. L. Matthews; W. Bertozzi; M. J. Leitch; C. A. Peridier; B. L. Roberts; C. P. Sargent; W. Turchinetz; D. J. S. Findlay; R. O. Owens

doi:10.1103/PhysRevLett.38.8

Short-Range, High-Momentum Effects in the Reaction ${}^{16}O (γ, p_{0})$ for $E_{γ} = 100 - 300$ MeV

J. L. Matthews, W. Bertozzi, M. J. Leitch, C. A. Peridier, B. L. Roberts, C. P. Sargent, W. Turchinetz, D. J. S. Findlay, and R. O. Owens

Phys. Rev. Lett. 38, 8 – Published 3 January 1977

Abstract

The ${}^{16}O (γ, p_{0})$ cross section has been measured for a series of photon energies between 100 and 300 MeV at proton angles of 45°, 90°, and 135°. Above 250 MeV, the results exceed simple shell-model predictions by several orders of magnitude. The data are compared with a calculation which involves $Δ$ excitation in an intermediate state.

Received 8 November 1976

DOI:https://doi.org/10.1103/PhysRevLett.38.8

Authors & Affiliations

J. L. Matthews, W. Bertozzi, M. J. Leitch, C. A. Peridier, B. L. Roberts, C. P. Sargent, and W. Turchinetz^*

Department of Physics and Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

D. J. S. Findlay and R. O. Owens^†

Department of Natural Philosophy, University of Glasgow, Glasgow, United Kingdom

^*Supported in part by U. S. Energy Research and Development Administration under Contract No. E(11-1)-3069.
^†Supported in part by the Science Research Council.