This work focusses on the estimation of induced photoneutrons energy, fluence, and strength using nuclear track detector (NTD) (CR-39). Photoneutron energy was estimated for three different linear accelerators, LINACs as an example for the commonly used accelerators. For high-energy linear accelerators, neutrons are produced as a consequence of photonuclear reactions in the target nuclei, accelerator head, field-flattening filters and beam collimators, and other irradiated objects. NTD (CR-39) is used to evaluate energy and fluence of the fast neutron. Track length is used to estimate fast photoneutrons energy for linear accelerators (Elekta 10 MV, Elekta 15 MV, and Varian 15 MV). Results show that the estimated neutron energies for the three chosen examples of LINACs reveals neutron energies in the range of 1-2 MeV for 10 and 15 MV X-ray beams. The fluence of neutrons at the isocenter (Φtotal) is found to be (4Ã106 n cm2 Gyâ1) for Elekta machine 10 MV. The neutron source strengths Q are calculated. It was found to be 0.2Ã1012 n Gyâ1 X-ray at the isocenter. This work represents simple, low cost, and accurate methods of measuring fast neutrons dose and energies.View full textDownload full textKeywordsdosimetry, photoneutrons, energyRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/10420150.2011.585469
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机译:这项工作的重点是使用核径迹探测器(NTD)(CR-39)估算感应光中子的能量,通量和强度。估计了三种不同的线性加速器的光中子能量,其中LINACs是常用加速器的一个例子。对于高能线性加速器,中子是在目标原子核,加速器头,场平坦滤波器和束准直器以及其他被照射物体中发生光核反应而产生的。 NTD(CR-39)用于评估快中子的能量和通量。轨道长度用于估计线性加速器(Elekta 10 MV,Elekta 15 MV和Varian 15 MV)的快速光中子能量。结果表明,对于三个选定的LINAC实例,估计的中子能量揭示了10和15 MV X射线束的1-2 MeV范围内的中子能量。中子在等中心点处的注量(α total sub>)被发现为(4×10 6 sup> n cm 2 sup> Gy Elekta机器10 MV的[1 sup>)。计算中子源强度Q。发现在等中心点处的X射线为0.2×10 12 sup>Ân Gy ˆ1 sup>。这项工作代表了测量快速中子剂量和能量的简单,低成本和准确的方法。查看全文下载全文关键词剂量测定,光中子,能量technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more“,发布:” ra-4dff56cd6bb1830b“};添加到候选列表链接永久链接http://dx.doi.org/10.1080/10420150.2011.585469
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