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科技导报
|研究论文
2006
, 24
(0609) :
36
-37
奇异反应和元素分离
全屏
袁双贵,徐岩冰,丁华杰,杨维凡
作者信息
Exotic Reactions and Element Separation
Affiliations
出版时间: 2006-09-10
文章导航
14MeV中子可以引起重核奇异的(n,2p)反应。中能较轻的重离子轰击重核,可以产生多核子转移反应,并以此为基础形成了我们合成和研究重丰中子新核素的一条物理思想和生成、分离鉴别技术路线。介绍了化学分离和X-γ符合方法(元素分离方法);先后合成了一些如185Hf、186Hf、237Th、238Th、239Pa、175Er和197Os等重丰中子新核素,并测定它们的半衰期分别为3.5min、2.6min、5.0min、9.4min、106min、2.8min和1.2min;还观测了它们其他的衰变性质,如新γ射线和衰变纲图等。
14- MeV neutrons could induce the exotic(n, 2p) reaction of heavy nuclear. The heary ion of kighter mass with intermediate energy bombardment of heavy nucleus could produce multinuclear transfer reaction. The physics idea and technical route for production, separation, and identification in the synthesis and study of new heavy neutron-rich nuclides were formed based on the mentioned above. The radiochemical separation and X-γ coincidence methods (element separation method) are introduced. Some new heavy neutron-rich nuclides such as 185Hf, 186Hf, 237Th, 238Th, 239Pa, 175Er, and 197Os were successively synthesized. Their half-life were determined to be 3.5 min, 2.6 min, 5.0 min, 9.4 min, 106 min, 2.8 min, and 1.2 min, respectively. And their other decay properties such as new γ rays and partial decay scheme were observed.
exotic reaction
/
element separation
袁双贵;徐岩冰;丁华杰;杨维凡.
奇异反应和元素分离.
科技导报,
2006
, 24
(0609)
: 36
-37
.
.
Exotic Reactions and Element Separation[J].
Science & Technology Review ,
2006
, 24
(0609)
: 36
-37
.
2006年第24卷第0609期
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接收时间:2009-08-17
首发时间:2006-09-10
出版时间:2006-09-10
收稿日期:2009-08-17
修回日期:1900-01-01
https://castjournals.cast.org.cn/joweb/kjdb/CN/1242117910773171149
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2种不同金属材料的力学参数
科 Family 属数 Number of genus 种数 Number of species 占总种数比例 Percentage of total species (%) 属 Genus 种数 Number of species 占总种数比例 Percentage of total species (%) 鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78 小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39 多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39 红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87 小菇属 Mycena 11 5.26 光柄菇属 Pluteus 5 2.39 红菇属 Russula 17 8.13 栓菌属 Trametes 5 2.39
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