高能α粒子轰击Yb箔制备178Hfm2核素的初步研究

杨天丽; 杨朝文; 迮仁德; 熊宗华; 郝樊华

doi:10.7498/aps.59.8465

摘要

在CS30回旋加速器上利用27MeV的α粒子束轰击天然金属Yb箔.对辐照样品进行了分析,确定产生的178Hfm2核素约1.5×1011个,辨识出样品中主要的长寿命核素,并推断产生这些核素可能的核反应通道.基于对样品放射性剂量率跟踪监测结果,初步确定了样品的冷却时间.这些研究结果一方面验证了所选择的制备途径是可行的,另一方面也为进一步开展该核素制备技术研究提供了参考依据.

关键词:

178Hfm2核素 /
α粒子 /
金属Yb

In this paper the 178Hfm2 isomer prepared through the bombardment of 27MeV α particles on natural metallic Yb foil in the CS30 cyclotron has been studied. Analysising the γ spectrum of sample irradiated by α particles, the amount of178Hfm2 isomer can be determined to be about 1.5×1011 nuclei, the main long-lived isomers of sample are identified and the possible reaction paths of these isomers are deduced. By monitoring the radioactivity dose of sample, the cooling time for chemical separation is also obtained. The preliminary results are conducive to further developing the method of 178Hfm2 isomer production.

Keywords:

作者及机构信息

(1)四川大学物理科学与技术学院,辐射物理与技术教育部重点实验室,成都 610045; (2)中国工程物理研究院核物理与化学研究所,绵阳 621900

Authors and contacts

(1)Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China; (2)Key Laboratory of Radiation Physics and Technology of Ministry of Education, School of Physical Science and Technology, Sichuan University, Chengdu 610045, China

参考文献

[1]	Smith M B,Walker P M, Ball G C 2003 Phys. Rev. C 68 031302
[2]	Collins C B, Davanloo F, Iosif M C,Dussart R, Hicks J M 1999 Phys. Rev. Lett . 82 695
[3]	Collins C B, Eberhard C D, Glesener J W, Anderson J A 1988 Phys. Rev. C 37 2267
[4]	Helmer R G, Reich C W 1968 Nucl. Phys. A114 649
[5]	Ahmad I, Banar J C, Becker J A, Bredeweg T A, Cooper J R, Gemmell D S, Kraemer A, Mashayekhi A,McNabb D P, Miller G G, Moore E F, Palmer P, Pangault L N, Rundberg R S, Schiffer J P, Shastri S D, Wang T E, Wilhelmy J B 2005 Phys. Rev. C 71 024311
[6]	Dong B Z, Xie L P, Lin W G, Rong L X, Wang J 2003 Acta Phys. Sin. 52 630 (in Chinese)[董宝中、解立平、林伟刚、荣利霞、王俊 2003物理学报 52 630]
[7]	Obrien H A 1989 Nucl. Instrum. Meth. Phys. Res. B 40—41 1126
[8]	Oganessian Y T, Hussonnois M H, Briancon C 1997 Hyperfine. Interact. 107 129
[9]	Karamian S A, Carroll J J, Adam J 2004 Nucl. Instrum. Meth. Phys. Res. A 530 463
[10]	Karamian S A, Adam J, Filossofov D V 2002 Nucl. Instrum. Meth. Phys. Res. A 489 448
[11]	Farrel P J, Dudnikov V,Carroll J J 2002 Hyperfine. Interact. 143 55
[12]	Yu W X, Lu H L, Zhao W R 1992 Chin J. Nucl. Phys. 14 326
[13]	Gong J, Hao F H, Hu G C, Huang R L, Liu S P, Shi X M, Wu J, Xiang Y C 2005 Acta Phys.Sin.54 3523 (in Chinese) [龚建、郝樊华、胡广春、黄瑞良、刘素萍、师学明、伍钧、向永春 2005 物理学报 54 3523]

施引文献

[1]	Smith M B,Walker P M, Ball G C 2003 Phys. Rev. C 68 031302
[2]	Collins C B, Davanloo F, Iosif M C,Dussart R, Hicks J M 1999 Phys. Rev. Lett . 82 695
[3]	Collins C B, Eberhard C D, Glesener J W, Anderson J A 1988 Phys. Rev. C 37 2267
[4]	Helmer R G, Reich C W 1968 Nucl. Phys. A114 649
[5]	Ahmad I, Banar J C, Becker J A, Bredeweg T A, Cooper J R, Gemmell D S, Kraemer A, Mashayekhi A,McNabb D P, Miller G G, Moore E F, Palmer P, Pangault L N, Rundberg R S, Schiffer J P, Shastri S D, Wang T E, Wilhelmy J B 2005 Phys. Rev. C 71 024311
[6]	Dong B Z, Xie L P, Lin W G, Rong L X, Wang J 2003 Acta Phys. Sin. 52 630 (in Chinese)[董宝中、解立平、林伟刚、荣利霞、王俊 2003物理学报 52 630]
[7]	Obrien H A 1989 Nucl. Instrum. Meth. Phys. Res. B 40—41 1126
[8]	Oganessian Y T, Hussonnois M H, Briancon C 1997 Hyperfine. Interact. 107 129
[9]	Karamian S A, Carroll J J, Adam J 2004 Nucl. Instrum. Meth. Phys. Res. A 530 463
[10]	Karamian S A, Adam J, Filossofov D V 2002 Nucl. Instrum. Meth. Phys. Res. A 489 448
[11]	Farrel P J, Dudnikov V,Carroll J J 2002 Hyperfine. Interact. 143 55
[12]	Yu W X, Lu H L, Zhao W R 1992 Chin J. Nucl. Phys. 14 326
[13]	Gong J, Hao F H, Hu G C, Huang R L, Liu S P, Shi X M, Wu J, Xiang Y C 2005 Acta Phys.Sin.54 3523 (in Chinese) [龚建、郝樊华、胡广春、黄瑞良、刘素萍、师学明、伍钧、向永春 2005 物理学报 54 3523]

姓名
邮箱
手机号码
标题
留言内容
验证码

搜索

留言板