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Updated: Jun 12, 2025

Characterization of Recombination Effects in a Liquid Ionization Chamber Used for the Dosimetry of a Radiosurgical Accelerator
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在电子闪光放射治疗中开发用于参考剂量计的新型电离化室

Kevin Liu1,2, Shannon Holmes3, Ahtesham Ullah Khan4,5

  • 1Department of Radiation Physics, Division of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.

Medical physics
|September 23, 2024
PubMed
概括

优化的平行板离子室在超高剂量速率 (UHDR) 束中实现了高电荷收集效率 (CCE). 减少电极间距和增加电场强度将脉冲宽度的依赖性降至最低,以获得可靠的剂量计.

关键词:
一个闪光灯.剂量测量方法 剂量测量方法离子室的离子室

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The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
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All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they...
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