排序方式: 共有21条查询结果,搜索用时 15 毫秒
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以~(64)Zn(~(12)C,2np)~(73)Br反应得到~(73)Br,经过氦喷嘴传输系统和快速化学分离后进行了γ单谱、γ-γ,符合和角关联测量,得到了~(73)Br的27条γ射线能量和相对强度,其中102.1、137.2、166.2、249.0、345.5、363.8、381.5、385.7和390.2keV9条γ射线以及192.4、537.4和574.1keV 3条能级为本工作首次测得.建立了~(73)Br的衰变纲图,由logft值和角关联系数测量值推测了90.4keV能级的自旋. 相似文献
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在兰州重离子加速器(FDUL)上,用60MeV/μ 18O离子轰击厚天然钨靶,通过多核子转移反应产生186Hf. 使用放射化学分离技术从钨和反应产物混和物中分离出铪,并由HPGe探测器测量铪样品的活性.观测到了186Hf的子体186Ta的737,5keVY射线的增长、衰变行为,结果表明,本实验首次合成并鉴别了新丰中子同位素186Hf,测得它的半衰期为(2.6±1.2)min. 相似文献
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一种缺中子新同位素235Am通过238Pu(p,4n)235Am反应而产生.产物借助He-jet系统的传输,快化学分离以及γ、X射线和γ-X(γ)符合测量等得到鉴别,测得其半衰期为15±5min. A new neutron deficient isotope 235 Am was produced via 238 Pu(p,4n) 235 Am reaction. The products were identified by means of the transporting of He jet system, separating of rapid radiochemical method and measuring of γ and X rays as well as X γ coincidence. The measured half life of 235 Am is 15±5min. 相似文献
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利用兰州重离子加速器(HIRFL)提供的60MeV/u的18O离子束照射天然铀靶,通过多核子转移反应生成238Th.用快速放射化学分离技术从铀及其反应产物的混合物中分离出Th同位素.使用两台高纯锗(HPGe)探测器测量了样品的γ射线活性,观测到了238Th的β-衰变子体238Pa的γ射线的生长、衰变行为,测定238Th的半衰期为9.4±2.0min A new nuclide 238Th has been produced via multinucleon transfer reaction by 60 MeV/u 18 O ion irradiation of natural uranium. The produced thorium was radiochemically separated from the mixture of uranium and its reaction products. The activity of thorium was measured by using a HPGe detector and a planar HPGe detector. 238 Th has been identified for the first time by measuring the growth and decay of the γ rays from its daughter nucleus 238 Pa. 相似文献
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