Measurements of the 48Ca(γ,n) reaction


Journal Article

The 48Ca(γ,n) cross section was measured by using γ-ray beams of energies between 9.5 and 15.3 MeV generated at the Triangle Universities Nuclear Laboratory high-intensity γ-ray source. Prior to this experiment, no direct measurements had been made with γ-ray beams of sufficiently low energy spread to observe a structure in this energy range. The cross sections were measured at 34 different γ-ray energies with an enriched 48Ca target. Neutron emission is the dominant decay mechanism in the measured energy range that spans from the threshold, across the previously identified M1 strength, and up the low-energy edge of the E1 giant dipole resonance. This paper found B(M1)=6.8±0.5μN2 for the 10.23-MeV resonance, a value greater than previously measured. Structures in the cross section have been observed whose magnitudes are in agreement with existing data and that are commensurate with extended random-phase approximation calculations. © 2011 American Physical Society.

Full Text

Duke Authors

Cited Authors

  • Tompkins, JR; Arnold, CW; Karwowski, HJ; Rich, GC; Sobotka, LG; Howell, CR

Published Date

  • October 31, 2011

Published In

Volume / Issue

  • 84 / 4

Electronic International Standard Serial Number (EISSN)

  • 1089-490X

International Standard Serial Number (ISSN)

  • 0556-2813

Digital Object Identifier (DOI)

  • 10.1103/PhysRevC.84.044331

Citation Source

  • Scopus