Energy spectra of secondary neutrons produced by high-energy bremsstrahlung in carbon, nitrogen, oxygen and tissue.
Phys Med Biol
; 27(4): 553-63, 1982 Apr.
Article
en En
| MEDLINE
| ID: mdl-7089051
The energy spectra of secondary neutrons produced when bremsstrahlung of end-point energy in the range 10-30 MeV is incident on oxygen, carbon and nitrogen have been calculated. Photonuclear reactions of the type (gamma, n) and (gamma, pn)( have been included. The respective contributions of various nuclear reactions have been adjusted using the published values of experimentally determined cross-sections, or branching-ratios, where these are available. Where no such information exists in the literature, the values have been empirically estimated. Agreements has been obtained between the calculated photoneutron spectra from C, N and O at various energies and the available experimentally-measured spectra. The photoneutron spectra from C, N and O have been combined in the right proportion (C5H40O18N) to compute the spectra of secondary neutrons from tissue irradiated with bremsstrahlung of end-point energy from 10-30 MeV. Mean neutron energies and kerma factors for these spectra have been calculated.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Radiación Ionizante
/
Neutrones
Idioma:
En
Revista:
Phys Med Biol
Año:
1982
Tipo del documento:
Article
Pais de publicación:
Reino Unido