The fragmentation of 670A MeV neon-20 as a function of depth in water. I. Experiment.
The fragmentation of 670A MeV neon-20 as a function of depth in water. I. Experiment.
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DOI：
10.2307/3577634
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发表时间：
1989-10
影响因子：
3.4
通讯作者：
W. Schimmerling;J. Miller;M. Wong;M. Rapkin;J. Howard;H. Spieler;B. Jarret
中科院分区：
文献类型：
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作者：
W. Schimmerling;J. Miller;M. Wong;M. Rapkin;J. Howard;H. Spieler;B. Jarret
我们提出了一个实验的最后分析，研究一束670 A MeV氖离子入射到水柱设置为不同的厚度的相互作用。对于Be（Z = 4）和Ne（Z = 10）之间的原子核，使用飞行时间望远镜测量速度和一组硅探测器测量每个粒子的能量损失，可以获得原束粒子和从靠近束中心轴的水柱中出现的核相互作用产物的原子序数Z（在某些情况下，还可以获得同位素质量A）。获得了给定电荷的粒子的注量，并将其归一化为入射光束强度。对触发TOF望远镜的多个粒子之间的偶然巧合和探测器中的相互作用进行了校正。计算了探测器上游束线元中束粒子相互作用产生的本底。本文总结了用于放射生物学研究的重离子束粒子鉴别实验中的实验伪影和背景的来源，并讨论了这项工作中固有的一些困难。作为LET的函数的绝对标准化的注量谱的完整表格被包括用于参考目的。
We present the final analysis of an experiment to study the interaction of a beam of 670A MeV neon ions incident on a water column set to different thicknesses. The atomic number Z (and, in some cases, the isotopic mass A) of primary beam particles and of the products of nuclear interactions emerging from the water column close to the central axis of the beam was obtained for nuclei between Be (Z = 4) and Ne (Z = 10) using a time-of-flight telescope to measure the velocity and a set of silicon detectors to measure the energy loss of each particle. The fluence of particles of a given charge was obtained and normalized to the incident beam intensity. Corrections were made for accidental coincidences between multiple particles triggering the TOF telescope and for interactions in the detector. The background due to beam particles interacting in beam line elements upstream of the detector was calculated. Sources of experimental artifacts and background in particle identification experiments designed to characterize heavy ion beams for radiobiological research are summarized, and some of the difficulties inherent in this work are discussed. Complete tables of absolutely normalized fluence spectra as a function of LET are included for reference purposes.