PHYSICAL MEASUREMENTS WITH HIGH-ENERGY RADIOACTIVE BEAMS
PHYSICAL MEASUREMENTS WITH HIGH-ENERGY RADIOACTIVE BEAMS
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DOI：
10.2307/3576001
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发表时间：
1982-01-01
影响因子：
3.4
通讯作者：
LLACER, J
中科院分区：
文献类型：
--
作者：
CHATTERJEE, A;SAUNDERS, W;LLACER, J
物理测量是用重粒子加速器产生的二次粒子高能放射性束（正电子发射器）进行的。提供了硅二极管的水当量厚度、布拉格峰值电离深度与停止深度的比较以及光束在正交方向上被异质材料拦截时的差分停止深度的数据。使用特殊的正电子发射束分析（PEBA）系统来形成停止的放射性束的图像。这些测量将对带电粒子放射治疗（癌症）产生直接影响，因为可以测量带电粒子束到患者体内目标的精确范围并用于治疗计划。在治疗期间，可以监控光束的停止点，以验证治疗是否按计划进行。
Physical measurements were made with high-energy radioactive beams (positron emitters) produced as secondary particles from a heavy-particle accelerator. Data are presented for water-equivalent thickness of a silicon diode, a comparison of Bragg peak ionization depth vs. stopping depth, and differential stopping depths when a beam is intercepted by heterogeneous materials in the orthogonal direction. A special positron-emitting bean analyzing (PEBA) system was used to form images of the stopped radioactive beam. These measurements will have direct impact on charged-particle radiotherapy [for cancer], since the precise range of beams of charged particles to targets within patients can be measured and used for treatment planning. During the treatments the stopping point of the beam can be monitored to verify that the treatment is being delivered as planned.