Semenenko V A, Turner J E, Borak T B
School of Health Sciences, Purdue University, 550 Stadium Mall Drive, West Lafayette, IN 47907-2051, USA.
Radiat Environ Biophys. 2003 Oct;42(3):213-7. doi: 10.1007/s00411-003-0201-z. Epub 2003 Aug 15.
The work reported here was originally motivated by a discussion of Monte Carlo computer codes for electron transport in water given in Report No. 130 by the National Council on Radiation Protection and Measurements (NCRP). It was pointed out (correctly) that a published depth-dose distribution calculated by the Oak Ridge electron transport code, OREC, for 800 keV electrons normally incident on a water slab was apparently in error, possibly due to inadequate treatment of elastic scattering. In this paper we describe the replacement of the original OREC elastic cross sections by current ones from the National Institute of Standards and Technology (NIST). This investigation led also to the critical examination and revision of some other parts of the program, as described here. The revised code, which we have renamed NOREC, represents the first substantial review and modification of the Oak Ridge code in a number of years. We also present some comparisons of results calculated with the old and new versions and discuss their implications with respect to earlier studies. We have also written a version of NOREC in C++ language, which is available to other investigators. This paper provides a record of a response to the NCRP published statement and documentation for the revised code, NOREC.
此处所报告的工作最初源于美国国家辐射防护与测量委员会（NCRP）第130号报告中关于蒙特卡罗计算机代码在水中电子输运方面的讨论。报告中（正确地）指出，橡树岭电子输运代码OREC计算的、垂直入射到水板上的800 keV电子的已发表深度剂量分布显然有误，这可能是由于对弹性散射处理不当所致。在本文中，我们描述了用美国国家标准与技术研究院（NIST）的现行弹性截面取代OREC原来的弹性截面的情况。如本文所述，这项研究还促使对程序的其他一些部分进行了严格审查和修订。修订后的代码，我们将其重新命名为NOREC，这是多年来对橡树岭代码的首次实质性审查和修改。我们还给出了用旧版本和新版本计算结果的一些比较，并讨论了它们对早期研究的意义。我们还用C++语言编写了一个NOREC版本，可供其他研究人员使用。本文记录了对NCRP已发表声明的回应以及修订代码NOREC的文档。
