Fast neutrons produced by nuclear fragmentation in treatment irradiations with 12C beam

被引：51

作者：

Gunzert-Marx, K ^{[1
]}

Schardt, D ^{[1
]}

Simon, RS ^{[1
]}

机构：

[1] Gesell Schwerionenforsch mbH, D-64291 Darmstadt, Germany

来源：

RADIATION PROTECTION DOSIMETRY | 2004年 / 110卷 / 1-4期

关键词：

D O I：

10.1093/rpd/nch138

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In the framework of the heavy-ion tumour therapy project at GSI we investigated the nuclear fragmentation of 200 AMeV carbon ions stopping in a 12.78-cm thick water absorber. Fast neutrons and charged particles emerging from the target were registered at forward angles between 0degrees and 30degrees with a DeltaE-E-telescope consisting of an NE102 and a BaF2 scintillator. We obtained neutron energy spectra and angular distributions and derived the neutron yield in the energy range from 10 to 500 MeV in the forward hemisphere. In addition, we performed fragmentation measurements in actual patient treatment irradiations. The resulting angular distributions of neutrons and charged particles as well as their yields are similar to those obtained with the water absorber.

引用

页码：595 / 600

页数：6

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