41. It must be composed of elements with low neutron capture BWR ) flashes to steam upon overheating or depressurization. 42. Single medical doses of 20 g of boric acid for neutron capture therapy have been used without undue toxicity. 43. The cross section for the process of neutron capture is much lower at high energies than at low energies. 44. Although a further tiny energy gain could be extracted by synthesizing rapid neutron capture by starting 56 Fe nuclei. 45. Neutrons slow down in elastic and inelastic collisions, until they are absorbed via Neutron capture or lost by leakage. 46. He shelved boron neutron capture therapy in 1961 after a woman died of brain swelling two weeks after treatment. 47. The coincidence of both events positron annihilation and neutron capture gives a unique signature of an antineutrino interaction. 48. The obtained 241 Am can be used for generating heavier americium isotopes by further neutron capture inside a nuclear reactor. 49. Later in 1961, Sweet ended the boron neutron capture therapy after a woman died of brain swelling two weeks after treatment. 50. Heinrich and Sienkewicz were afflicted with fast-growing brain tumors when Sweet and MGH administered boron neutron capture therapy ( BNCT ).
