中国科学A辑(英文版)
中國科學A輯(英文版)
중국과학A집(영문판)
SCIENCE IN CHINA
2002年
10期
1329-1334
,共6页
袁双贵%杨维凡%徐岩冰%肖永厚%罗亦孝
袁雙貴%楊維凡%徐巖冰%肖永厚%囉亦孝
원쌍귀%양유범%서암빙%초영후%라역효
β-delayed fission probability%multinucleon transfer reaction%radiochemical separation
The 230Ra has been produced via 232Th-2p reaction induced by 60 MeV/u 18O ion irradia-tion of natural thorium. The radium was radiochemically separated from the mixture of thorium andreaction products. Thin Ra sources in which 230Ac was got through 230Ra β- → 230Ac were pre-pared for observing fission fragments from β-delayed fission of 230Ac. The sources were exposedto the mica fission track detectors and measured by the HPGe γ detector. The precursor 230Ac wasidentified by means of observed two fission events as well as γ spectra, and the β-delayed fissionprobability of 230Ac was obtained to be (1.19±0.85) × 10-8.
