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相关概念视频

Radiation: Applications01:17

Radiation: Applications

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The average temperature of Earth is the subject of much current discussion. Earth is in radiative contact with both the Sun and dark space; it receives almost all its energy from the radiation of the Sun and reflects some of it into outer space. Dark space is very cold, about 3 K, so Earth radiates energy into it. For instance, heat transfer occurs from soil and grasses, the rate of which can be so rapid that frost can occur on clear summer evenings, even in warm latitudes.
The average...
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Radiation Pressure: Problem Solving01:09

Radiation Pressure: Problem Solving

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The radiation pressure applied by an electromagnetic wave on a perfectly absorbing surface equals the energy density of the wave. The wave's momentum also gets transferred to the surface when an electromagnetic wave is entirely absorbed by it. The rate at which momentum is transmitted to an absorbing surface perpendicular to the propagation direction equals the force on the surface.
The average value of the rate of momentum transfer divided by the absorbing area represents the average force...
398

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相关实验视频

Updated: Jul 23, 2025

A Basic Positron Emission Tomography System Constructed to Locate a Radioactive Source in a Bi-dimensional Space
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使用基于模型的方法定位辐射源.

András Molnár1,2, Daniel Kiss2, Zsolt Domozi3

  • 1Faculty of Economy, J. Selye University, Bratislavská cesta 3322, 945 01 Komárno, Slovakia.

Sensors (Basel, Switzerland)
|July 14, 2023
PubMed
概括

本研究提出了一种优化方法,使用玛剂量测量来定位单个辐射源. 该技术在没有先前位置数据的情况下成功估计了辐射位置和强度,并被证明是可靠的分析应用.

关键词:
无人机 无人机 无人机现场剂量分配的分配方法玛辐射是一种玛辐射.

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相关实验视频

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科学领域:

  • 辐射检测和测量 辐射检测和测量
  • 地质物理测量是指地质物理测量.
  • 环境监测环境监测环境监测

背景情况:

  • 马剂量测量可以源于背景辐射和局部来源.
  • 准确的来源定位对于辐射安全和环境评估至关重要.
  • 现有的方法可能需要大量的先前数据或复杂的处理.

研究的目的:

  • 开发和验证用于定位单个辐射源的优化方法.
  • 估计一个马辐射源的地理坐标和强度.
  • 评估该方法作为独立分析工具的可靠性.

主要方法:

  • 一个优化程序,假设马剂量值来自背景和单一来源.
  • 根据辐射的距离定律寻找地理坐标的空间搜索.
  • 使用独立测量的实验数据进行验证,其中源参数是预定义的,但在处理过程中被保留.

主要成果:

  • 该方法在没有初始位置参数的情况下准确估计了辐射位置.
  • 源强度也可靠地确定.
  • 验证证实了该程序在确定单一源的有效性.

结论:

  • 开发的方法是用于单个辐射源定位的可靠分析工具.
  • 它可以作为更复杂的多源检测流程的基础步骤.
  • 该技术证明了仅从剂量测量中估计源参数的可行性.