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The physical and radiobiological properties of two neutron beams have been compared. The beams were generated by deuterons of 16 MeV at Hammersmith Hospital and 42 MeV at Harwell, in both cases falling on a Be/Cu target. The dose-rate and depth-dose characteristics at the higher energy were found to be superior to those at the lower energy. Collimation and shielding at the higher energy are facilitated by the greater degree of forward-peaking and by the fact that a higher dose-rate allows longer collimators to be used. Attenuation in iron was found to be similar at the two energies. The radiobiological properties of the two neutron beams are very similar. There is a difference of about 20 per cent in RBE for effects on mammalian tissues for doses between 300 and 2,000 rad of neutrons. The OER and the sparing effect of two large fractions are the same for the two beams.
D K Bewley, and
B Cullen, and
S B Field, and
S Hornsey, and
B C Page, and
R J Berry
April 1973,
Radiation research,
D K Bewley, and
B Cullen, and
S B Field, and
S Hornsey, and
B C Page, and
R J Berry
January 1974,
Medical physics,
D K Bewley, and
B Cullen, and
S B Field, and
S Hornsey, and
B C Page, and
R J Berry
January 1982,
Acta radiologica. Oncology,
D K Bewley, and
B Cullen, and
S B Field, and
S Hornsey, and
B C Page, and
R J Berry
July 1976,
The British journal of radiology,
D K Bewley, and
B Cullen, and
S B Field, and
S Hornsey, and
B C Page, and
R J Berry
January 1979,
Medical physics,
D K Bewley, and
B Cullen, and
S B Field, and
S Hornsey, and
B C Page, and
R J Berry
November 1976,
The British journal of radiology,
D K Bewley, and
B Cullen, and
S B Field, and
S Hornsey, and
B C Page, and
R J Berry
January 1977,
Medical physics,
D K Bewley, and
B Cullen, and
S B Field, and
S Hornsey, and
B C Page, and
R J Berry
July 1976,
Physics in medicine and biology,
D K Bewley, and
B Cullen, and
S B Field, and
S Hornsey, and
B C Page, and
R J Berry
May 1975,
The British journal of radiology,
D K Bewley, and
B Cullen, and
S B Field, and
S Hornsey, and
B C Page, and
R J Berry
September 1977,
The British journal of radiology,
