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首页> 外文期刊>Computer physics communications >Computer program Neutron-CR-39 for simulation of neutrons from an Am-Be source and calculation of proton track profiles
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Computer program Neutron-CR-39 for simulation of neutrons from an Am-Be source and calculation of proton track profiles

机译：计算机程序Neutron-CR-39，用于模拟Am-Be来源的中子并计算质子径迹

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摘要

A computer program called Neutron-CR-39.F90 for neutron simulation through a PADC detector and its detection was described and developed. In this work the neutron Am-Be source was considered for simulation. It was shown that the most intensive secondary particles, created in neutron interactions with the detector, are protons. The programming steps are outlined with detailed description of neutron simulation, determination of latent tracks of created protons, as well as, their development after detector etching in the same and opposite direction of particle motion. The outputs of the code are parameters of created protons (coordinates of starting and stopping points, direction angles of particles, initial and deposited energies) and number of visible tracks per incident neutron. Program summary: Program title: Neutron-CR-39 Catalogue identifier: AEIU-v1-0 Program summary URL: http://cpc.cs.qub.ac.uk/summaries/ AEIU-v1-0.html Program obtainable from: CPC Program Library, Queen's University, Belfast, N. Ireland Licensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.html No. of lines in distributed program, including test data, etc.: 140 004 No. of bytes in distributed program, including test data, etc.: 2 213 012 Distribution format: tar.gz Programming language: Fortran 90 Computer: PCs and workstations Operating system: Unix, Linux, Windows 95+ RAM: 256 MB Classification: 17.5, 18 External routines: For the Windows installation the entire code must be linked with the PORTLIB library. Nature of problem: The neutrons do not cause ionizations in the detector, and consequently no tracks are produced directly by them in the PADC. Due to the elastic and nonelastic interaction of neutrons with the atoms of PADC, recoil nuclei and secondary particles are created producing latent intrinsic tracks. After chemical etching in aqueous NaOH solution these tracks become visible under optical microscope and usually density of visible tracks is measured. Optical microscopes are often used for this purpose but the process is relatively tedious and time consuming. The present computer program has been written for neutron simulation through PADC detector; determination of parameters of secondary particles; calculation track profiles of secondary particles emitted in the same and opposite direction as etchant progression. The outputs of the code are parameters of secondary particles (coordinates of starting and stopping points, direction angles of particles, initial and deposited energies) and number of visible tracks per incident neutron. Solution method: A computer program is prepared to simulate neutron's interactions in a PADC by the Monte Carlo method using the Neutron data library ENDF/B-VII [B. Milenkovic, D. Nikezic, N. Stevanovic, Radiat. Meas. 45 (2010) 1338]. The parameters of the emitted secondary particles (emission angle, initial energy, deposited energy and starting and stopping coordinates) were stored in an enclosed file. The subroutine for calculation of track profiles by a finite difference method for particles emitted in the same direction was developed [D. Nikezic, N. Stevanovic, D. Kostic, S. Savovic, K.C.C. Tse, K.N. Yu, Radiat. Meas. 43 (2008) S76]. It was shown that there are many tracks formed in the opposite direction than the etchant progression. The method for calculation of track profiles for these particles is developed in [B. Milenkovic, N. Stevanovic, D. Krstic, D. Nikezic, Radiat. Meas. 44 (2009) 57].
机译：描述并开发了一种名为Neutron-CR-39.F90的计算机程序，用于通过PADC检测器进行中子模拟。在这项工作中，考虑使用中子Am-Be源进行模拟。结果表明，在与探测器的中子相互作用中产生的强度最高的次级粒子是质子。概述了编程步骤，其中详细描述了中子模拟，确定了生成的质子的潜迹以及检测器沿粒子运动的相同和相反方向蚀刻后它们的发展。该代码的输出是所创建质子的参数（起点和终点的坐标，粒子的方向角，初始能量和沉积能量）以及每个入射中子的可见光迹数。程序摘要：程序标题：Neutron-CR-39目录标识符：AEIU-v1-0程序摘要URL：http://cpc.cs.qub.ac.uk/summaries/ AEIU-v1-0.html程序可从以下网站获得：爱尔兰北卡罗来纳州贝尔法斯特女王大学CPC计划库许可条款：标准CPC许可证，http：//cpc.cs.qub.ac.uk/licence/licence.html分布式程序中的行数，包括测试数据，等等：140 004分布式程序中的字节数，包括测试数据等：2 213 012分发格式：tar.gz编程语言：Fortran 90计算机：PC和工作站操作系统：Unix，Linux，Windows 95+ RAM ：256 MB分类：17.5，18外部例程：对于Windows安装，必须将整个代码与PORTLIB库链接。问题性质：中子不会在探测器中引起电离，因此在PADC中不会直接产生任何轨道。由于中子与PADC原子的弹性和非弹性相互作用，产生了反冲核和次级粒子，从而产生了潜在的固有轨道。在NaOH水溶液中进行化学蚀刻后，这些迹线在光学显微镜下变得可见，通常测量可见迹线的密度。光学显微镜通常用于此目的，但是该过程相对繁琐且耗时。已经编写了本计算机程序，用于通过PADC检测器进行中子模拟。确定二次粒子的参数;计算与蚀刻剂行进方向相同和相反的次级粒子的轨迹曲线。该代码的输出是次级粒子的参数（起始点和终止点的坐标，粒子的方向角，初始能量和沉积能量）以及每个入射中子的可见磁道数。解决方法：准备一个计算机程序，以使用中子数据库ENDF / B-VII [B.]通过Monte Carlo方法模拟PADC中的中子相互作用。 Milenkovic，D。Nikezic，N。Stevanovic，Radiat。测量。 45（2010）1338]。发射的次级粒子的参数（发射角度，初始能量，沉积能量以及起始和终止坐标）存储在一个封闭的文件中。开发了用于通过有限差分法计算沿同一方向发射的粒子的轨迹轮廓的子程序[D。 Nikezic，N.Stevanovic，D.Kostic，S.Savovic，K.C.C。谢国强于，Radiat。测量。 43（2008）S76]。结果表明，沿与蚀刻剂前进相反的方向形成了许多轨迹。在[B.]中开发了用于计算这些粒子的轨迹轮廓的方法。 Milenkovic，N.Stevanovic，D.Krstic，D.Nikezic，Radiat。测量。 44（2009）57]。

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