Application of the Direct-Semidirect Model to the Interpretation of <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>E</mi><mn>1</mn><mn></mn></math> and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>E</mi><mn>2</mn><mn></mn></math> Strength in <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>14</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow><mo>(</mo><mrow><msub><mrow><mi>p</mi></mrow><mrow><mi mathvariant="normal">pol</mi></mrow></msub></mrow><mo>,</mo><mi> </mi><mrow><msub><mrow><mi>γ</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow><mo>)</mo><mrow><mmultiscripts><mrow><mi mathvariant="normal">N</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>15</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math>

K. A. Snover; J. E. Bussoletti; K. Ebisawa; T. A. Trainor; A. B. McDonald

doi:10.1103/PhysRevLett.37.273

Application of the Direct-Semidirect Model to the Interpretation of $E 1$ and $E 2$ Strength in ${}^{14}C (p_{pol}, γ_{0}) {}^{15}N$

K. A. Snover, J. E. Bussoletti, K. Ebisawa, T. A. Trainor, and A. B. McDonald

Phys. Rev. Lett. 37, 273 – Published 2 August 1976; Erratum Phys. Rev. Lett. 37, 1651 (1976)

Abstract

Direct-semidirect radiative-capture calculations are compared to new detailed ${}^{14}C (p_{pol}, γ_{0}) {}^{15}N$ measurements in the giant-dipole-resonance region. The calculations provide a good description of the data by including only direct $E 2$ and direct plus collective $E 1$ . The experimentally determined $E 2$ cross section exhausts (6.8±1.4)% of the isoscalar sum rule and shows no sign of a resonance.