Investigation of the <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">C</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>12</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow><mo>(</mo><mi>γ</mi><mo>,</mo><mi>p</mi><mi>n</mi><mo>)</mo></math></span> Reaction Using Tagged Photons

S. N. Dancer; I. J. D. MacGregor; J. R. M. Annand; I. Anthony; G. I. Crawford; S. J. Hall; J. D. Kellie; J. C. McGeorge; R. O. Owens; P. A. Wallace; D. Branford; S. V. Springham; A. C. Shotter; B. Schoch; J. M. Vogt; R. Beck; G. Liesenfeld

doi:10.1103/PhysRevLett.61.1170

Investigation of the ${}^{12}C (γ, p n)$ Reaction Using Tagged Photons

S. N. Dancer, I. J. D. MacGregor, J. R. M. Annand, I. Anthony, G. I. Crawford, S. J. Hall, J. D. Kellie, J. C. McGeorge, R. O. Owens, P. A. Wallace, D. Branford, S. V. Springham, A. C. Shotter, B. Schoch, J. M. Vogt, R. Beck, and G. Liesenfeld

Phys. Rev. Lett. 61, 1170 – Published 5 September 1988

Abstract

Tagged-photon measurements of the ${}^{12}C (γ, p n)$ reaction in the photon energy range 83-133 MeV are reported. The measurements have achieved a good angular resolution, ≃4°, and a better missing-energy resolution, ≃8 MeV, than any previous measurement. This has allowed events to be selected in which both the neutron and proton are ejected from the $1 p$ shell of the ${}^{12}C$ nucleus. The correlation of the momenta of the outgoing nucleon pairs is quantitatively explained by the quasideuteron mechanism.

Received 23 March 1988

DOI:https://doi.org/10.1103/PhysRevLett.61.1170

Authors & Affiliations

S. N. Dancer, I. J. D. MacGregor, J. R. M. Annand, I. Anthony, G. I. Crawford, S. J. Hall, J. D. Kellie, J. C. McGeorge, R. O. Owens, and P. A. Wallace

Glasgow University, Glasgow, Scotland, G12 8QQ, United Kingdom

D. Branford, S. V. Springham, and A. C. Shotter

Edinburgh University, Edinburgh, Scotland, EH9 3JZ, United Kingdom

B. Schoch, J. M. Vogt^*, R. Beck, and G. Liesenfeld^†

Johannes-Gutenburg Universität, D-6500 Mainz, Federal Republic of Germany

^*Present address: University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N 0W0.
^†Present address: Siemens, Munich, Federal Republic of Germany.