| Автор | D K Bewley |
| Дата выпуска | 1984-04-01 |
| dc.description | All existing neutron sources suffer from disadvantages which would not be tolerated in modern megavoltage X-ray equipment. Experimental work with 30-60 MeV protons on beryllium and other elements has shown how these difficulties can to a large extent be overcome. Angular distributions and kerma rates as a function of proton energy are presented for various targets. Thin targets are found to be a better method than filtration for improving the penetration of the beam. A <sup>237</sup>Np fission counter and a GM counter have been used to decompose stray radiation into its neutron and gamma-ray components. A model of a treatment head was found to attenuate the neutron component to less than 1% of its value of the useful beam. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | New neutron sources for radiotherapy |
| Тип | paper |
| DOI | 10.1088/0031-9155/29/4/004 |
| Electronic ISSN | 1361-6560 |
| Print ISSN | 0031-9155 |
| Журнал | Physics in Medicine and Biology |
| Том | 29 |
| Первая страница | 341 |
| Последняя страница | 349 |
| Аффилиация | D K Bewley; MRC Cyclotron Unit, Hammersmith Hospital, London, UK |
| Выпуск | 4 |
