Photoneutron yields from tungsten in the energy range of the giant dipole resonance


Akkurt I., Adler J., Annand J., Fasolo F., Hansen K., Isaksson L., ...More

PHYSICS IN MEDICINE AND BIOLOGY, vol.48, no.20, pp.3345-3352, 2003 (Peer-Reviewed Journal) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 48 Issue: 20
  • Publication Date: 2003
  • Doi Number: 10.1088/0031-9155/48/20/006
  • Journal Name: PHYSICS IN MEDICINE AND BIOLOGY
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.3345-3352

Abstract

Photoneutron production on the nuclei of high-Z components of medical accelerator heads can lead to a significant secondary dose during a course of bremsstrahlung radiotherapy, However, a quantitative evaluation of secondary neutron dose requires improved data on the photoreaction yields. These have been measured as a function of photon energy, neutron energy and neutron angle for W-nat, using tagged photons at the MAX-Lab photonuclear facility in Sweden. This work presents neutron yields for W-nat(gamma, n) and compares these with the predictions of the Monte Carlo code MCNP-GN, developed specifically to simulate photoneutron production at medical accelerators.