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 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 48 Issue: 20
  • Publication Date: 2003
  • Doi Number: 10.1088/0031-9155/48/20/006
  • Title of Journal : PHYSICS IN MEDICINE AND BIOLOGY
  • 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.