• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Radiation Protection Dosimetry >IMPLICATIONS OF THE SPACE RADIATION ENVIRONMENT FOR HUMAN EXPLORATION IN DEEP SPACE
【24h】

IMPLICATIONS OF THE SPACE RADIATION ENVIRONMENT FOR HUMAN EXPLORATION IN DEEP SPACE

机译：空间辐射环境对深空人类探索的意义

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Human exploration of the solar system beyond Earth's orbit will entail many risks for the crew on these deep space missions. One of the most significant health risks is exposure to the harsh space radiation environment beyond the protection provided by the Earth's intrinsic magnetic field. Crew on exploration missions will be exposed to a complex mixture of very energetic particles. Chronic exposures to the ever-present background galactic cosmic ray (GCR) spectrum consisting of all naturally occurring chemical elements are combined with sporadic, possibly acute exposures to large fluxes of solar energetic particles, mainly protons and alpha particles. The background GCR environment is mainly a matter of concern for stochastic effects, such as the induction of cancer with subsequent mortality in many cases, and late deterministic effects, such as cataracts and possible damage to the central nervous system. Unfortunately, the actual risks of cancer induction and mortality owing to the very important high-energy heavy ion component of the GCR spectrum are essentially unknown. The sporadic occurrence of extremely large solar energetic particle events (SPE), usually associated with intense solar activity, is also a major concern for the possible manifestation of acute effects from the accompanying high doses of such radiations, especially acute radiation syndrome effects such as nausea, emesis, haemorrhaging or, possibly, even death. In this presentation, an overview of the space radiation environment, estimates of the associated body organ doses and equivalent doses and the potential biological effects on crew in deep space are presented. Possible methods of mitigating these radiations, thereby reducing the associated risks to crew are also described.
机译：人类对地球轨道以外太阳系的探索将给执行这些深空任务的机组人员带来许多风险。最严重的健康风险之一是暴露于恶劣的空间辐射环境中，这是地球固有磁场所不能提供的。进行勘探任务的机组人员将暴露于非常高能粒子的复杂混合物中。长期暴露于永远存在的，由所有自然发生的化学元素组成的背景银河宇宙射线（GCR）光谱，以及与零星的，可能的急性暴露于大流量的太阳能粒子（主要是质子和α粒子）的组合。 GCR的背景环境主要是有关随机效应的问题，例如在许多情况下诱发癌症并随后致死，以及后来的确定性效应，例如白内障和对中枢神经系统的损害。不幸的是，由于GCR光谱中非常重要的高能重离子成分，导致癌症和死亡的实际风险基本上是未知的。通常与强烈的太阳活动相关的极高的太阳高能粒子事件（SPE）的偶发发生也是主要关注的问题，因为伴随着这种高剂量的此类辐射可能会产生急性影响，尤其是诸如恶心等急性辐射综合症的影响，呕吐，出血或什至死亡。在此演示文稿中，概述了空间辐射环境，相关人体器官剂量和等效剂量的估计值以及对深空人员的潜在生物学影响。还描述了减轻这些辐射从而减少对机组人员相关风险的可能方法。

著录项

  • 来源
    《Radiation Protection Dosimetry》 |2005年第4期|p.44-50|共7页
  • 作者

    Lawrence W. Townsend;

  • 作者单位

    Department of Nuclear Engineering, The University of Tennessee, Knoxville, TN 37996-2300, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号