Akkurt I, Adler JO, Annand JRM, Fasolo F, Hansen K, Isaksson L, Karlsson M, Lilja P, Lundin M, Nilsson B, Ongaro C, Reiter A, Rosner G, Sandell A, Schröder B, Zanini A. Photoneutron yields from tungsten in the energy range of the giant dipole resonance.
Phys Med Biol 2003;
48:3345-52. [PMID:
14620062 DOI:
10.1088/0031-9155/48/20/006]
[Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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 natW, using tagged photons at the MAX-Lab photonuclear facility in Sweden. This work presents neutron yields for natW(gamma, n) and compares these with the predictions of the Monte Carlo code MCNP-GN, developed specifically to simulate photoneutron production at medical accelerators.
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