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PuO2颗粒对自发α射线的能量自吸收效应评估研究(已撤稿)

罗文 祝小惠 宋英明 朱志超

罗文, 祝小惠, 宋英明, 朱志超. PuO2颗粒对自发α射线的能量自吸收效应评估研究(已撤稿)[J]. 原子核物理评论, 2016, 33(3): 326-329.
引用本文: 罗文, 祝小惠, 宋英明, 朱志超. PuO2颗粒对自发α射线的能量自吸收效应评估研究(已撤稿)[J]. 原子核物理评论, 2016, 33(3): 326-329.
LUO Wen, ZHU Xiaohui, SONG Yingming, ZHU Zhichao. PuO2颗粒对自发α射线的能量自吸收效应评估研究(Withdraw)[J]. Nuclear Physics Review, 2016, 33(3): 326-329.
Citation: LUO Wen, ZHU Xiaohui, SONG Yingming, ZHU Zhichao. PuO2颗粒对自发α射线的能量自吸收效应评估研究(Withdraw)[J]. Nuclear Physics Review, 2016, 33(3): 326-329.

PuO2颗粒对自发α射线的能量自吸收效应评估研究(已撤稿)

基金项目: 国家自然科学基金资助项目(11347028);湖南省教育厅重点基金资助项目(13A080和14A120);教育部博士点基金项目(20134324120003);核技术及应用湖南省重点学科建设资助项目
详细信息
    作者简介:

    罗文(1985-),男,湖南邵阳人,副教授,博士,研究生导师,从事核技术及应用研究;E-mail:wenluo-ok@163.com

    通讯作者: 朱志超,E-mail:zhuzhichao@impcas.ac.cn
  • 中图分类号: TL72

PuO2颗粒对自发α射线的能量自吸收效应评估研究(Withdraw)

Funds: National Natural Science Foundation of China (11347028); Research Foundation of Education Bureau of Hunan Province, China (13A080, 14A120); Foundation for University Key Teachers from the Ministry of Education of China (20134324120003); Construct Program of the key Discipline in Hunan Province
  • 摘要:

    构建PuO2颗粒状α发射体的球体几何模型,采用蒙特卡罗和射程经验公式模拟计算α射线在PuO2颗粒中的射程能量关系式及α射线从PuO2颗粒表面出射的能谱分布,研究因PuO2颗粒对自发α射线的能量自吸收效应导致的对人体内照射剂量评估的影响。研究结果表明,PuO2粒径越大,其对自发α射线的能量自吸收效应越明显,内照射剂量的修正效果越好;当PuO2粒径在2 μm以上时,内照射剂量的修正效果大于5%。本研究的结果对吸入放射性物质所致人体内照射剂量的准确估算有重要的参考价值,并可应用于放射性核素肿瘤治疗等领域的微剂量学研究。

    A sphere geometry model for plutonium oxide-based alpha emitter was setup.The range of alpha particle in plutonium oxide pellet versus its energy and the spectral distribution of alpha particle emerging from the emitter surface were calculated using Monte Carlo method combined with the empirical formula of range.The internal radiation dose resulted by self-absorption effect of α-rays emitted spontaneously in plutonium oxide was investigated accordingly.The result shows that the larger particle size the plutonium oxide-based alpha emitter has,the more obvious the self-absorption effect is and the better the correction effect of the intake absorbed dose that effects on human lung has.For plutonium oxide pellet with its particle size exceeding 2 μm,the correction quantity is expected to be larger than 5%.Our work is beneficial for a precise evaluation of internal radiation dose induced by inhaled radioactive material and microdosimetry study in radionuclide tumor therapy.

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    [9] WANG Xiaolian,LI Cheng,SHAO Ming.Particle Detection Technique[M].Hefei:University of Science and Technology of China Publishing House,2009:30.(in Chinese)(汪晓莲,李澄,邵明.粒子探测技术[M].合肥:中国科学技术大学出版社,2009:30.)
    [10] BROWNE E,TULI J K.Nuclear Data Sheets,2007,108(3):681.
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出版历程
  • 收稿日期:  2015-08-19
  • 修回日期:  2015-10-20
  • 刊出日期:  2016-09-20

PuO2颗粒对自发α射线的能量自吸收效应评估研究(已撤稿)

    基金项目:  国家自然科学基金资助项目(11347028);湖南省教育厅重点基金资助项目(13A080和14A120);教育部博士点基金项目(20134324120003);核技术及应用湖南省重点学科建设资助项目
    作者简介:

    罗文(1985-),男,湖南邵阳人,副教授,博士,研究生导师,从事核技术及应用研究;E-mail:wenluo-ok@163.com

    通讯作者: 朱志超,E-mail:zhuzhichao@impcas.ac.cn
  • 中图分类号: TL72

摘要: 

构建PuO2颗粒状α发射体的球体几何模型,采用蒙特卡罗和射程经验公式模拟计算α射线在PuO2颗粒中的射程能量关系式及α射线从PuO2颗粒表面出射的能谱分布,研究因PuO2颗粒对自发α射线的能量自吸收效应导致的对人体内照射剂量评估的影响。研究结果表明,PuO2粒径越大,其对自发α射线的能量自吸收效应越明显,内照射剂量的修正效果越好;当PuO2粒径在2 μm以上时,内照射剂量的修正效果大于5%。本研究的结果对吸入放射性物质所致人体内照射剂量的准确估算有重要的参考价值,并可应用于放射性核素肿瘤治疗等领域的微剂量学研究。

A sphere geometry model for plutonium oxide-based alpha emitter was setup.The range of alpha particle in plutonium oxide pellet versus its energy and the spectral distribution of alpha particle emerging from the emitter surface were calculated using Monte Carlo method combined with the empirical formula of range.The internal radiation dose resulted by self-absorption effect of α-rays emitted spontaneously in plutonium oxide was investigated accordingly.The result shows that the larger particle size the plutonium oxide-based alpha emitter has,the more obvious the self-absorption effect is and the better the correction effect of the intake absorbed dose that effects on human lung has.For plutonium oxide pellet with its particle size exceeding 2 μm,the correction quantity is expected to be larger than 5%.Our work is beneficial for a precise evaluation of internal radiation dose induced by inhaled radioactive material and microdosimetry study in radionuclide tumor therapy.

English Abstract

罗文, 祝小惠, 宋英明, 朱志超. PuO2颗粒对自发α射线的能量自吸收效应评估研究(已撤稿)[J]. 原子核物理评论, 2016, 33(3): 326-329.
引用本文: 罗文, 祝小惠, 宋英明, 朱志超. PuO2颗粒对自发α射线的能量自吸收效应评估研究(已撤稿)[J]. 原子核物理评论, 2016, 33(3): 326-329.
LUO Wen, ZHU Xiaohui, SONG Yingming, ZHU Zhichao. PuO2颗粒对自发α射线的能量自吸收效应评估研究(Withdraw)[J]. Nuclear Physics Review, 2016, 33(3): 326-329.
Citation: LUO Wen, ZHU Xiaohui, SONG Yingming, ZHU Zhichao. PuO2颗粒对自发α射线的能量自吸收效应评估研究(Withdraw)[J]. Nuclear Physics Review, 2016, 33(3): 326-329.
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