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新核素239Pa的分离和鉴别
SEPARATION AND IDENTIFICATION OF NEW ISOTOPE 239 Pa
【摘要】 用50MeV/u18O离子照射厚天然铀靶,用HPGe探测器测量化学分离后的Pa样品源,观察到了239Pa的β-衰变子体239U的74.66keVγ射线的生长和衰变,首次鉴定了新丰中子核素239Pa,并确定了239Pa的半衰期为(106±30)min。
【Abstract】 nat U targets are irradiated with 50 MeV/u 18 O ions.The Pa sample sources separated chemically are measured using a HPGe detector.A new neutron rich isotope, 239 Pa,has been identified for the first time by observation of the growth and decay of 239 U daughter.The half life of 239 Pa has been determined to be (106±30)min.
- 【文献出处】 核化学与放射化学 ,JOURNAL OF NUCLEAR AND RADIOCHEMISTRY , 编辑部邮箱 ,1997年01期
- 【分类号】O614.52
- 【下载频次】21