An international journal published by K. N. Toosi University of Technology

Measurement of naturally occurring radioactive materials concentration in Tehran’s water using Gamma spectrometry

‎M‎ehrnaz Zehtabvar; ‎D‎ariush Sardari; ‎Gh‎olamreza ‎Jahanfarnia

Volume 1, Issue 1 , January 2020, , Pages 1-5

  ‎The concentration of naturally occurring radioactive materials (NORM) in surface water and irrigation wells is measured using gamma ray spectrometry by HPGe detector‎. ‎Measurement was carried out for samples that were collected over seventeen points in Tehran city and its suburbs‎. ...  Read More

Investigation the effect of anode's insert material on spatial distribution of X-ray source in plasma focus device

‎Seyed Milad Miremad; ‎Babak Shirani Bidabadi

Volume 1, Issue 2 , June 2020, , Pages 1-5

  ‎In this paper‎, ‎the effect of anode's insert material on spatial distribution of X-ray emission zone of plasma focus device was studied‎. ‎Anode's insert materials were fabricated out of aluminum‎, ‎zinc‎, ‎tin‎, ‎tungsten and lead‎. ‎For each insert ...  Read More

A fast Jacobian-Free Newton-Krylov iterative solver for eigenvalue search problems in the reactor physics

Mohammadreza Abbasi

Volume 1, Issue 3 , August 2020, , Pages 1-9

  ‎The Jacobian-Free Newton-Krylov (JFNK) method has been widely used in solving nonlinear equations arising in many applications‎. ‎In this paper‎, ‎the JFNK solver is examined as an alternative to the traditional power iteration method for calculation of the fundamental eigenmode ...  Read More

Calculation of neutronic and kinetic parameters of Isfahan Miniature Neutron Source Reactor using slope fit and perturbation methods

Mahdi Ghaed Rahmati; Mostafa hasanzadeh; Seyed Amir Hossein Feghhi

Volume 1, Issue 4 , October 2020, , Pages 1-8

  Kinetic and neutronic parameters play an important role in analysis of reactors dynamic behavior. Some of these parameters include: effective multiplication factor (keff), reactivity (ρ), neutron flux as well as power spatial distributions, effective delayed neutron fraction (βeff) and prompt ...  Read More

Investigation of the water to air conversion factor dependency to the spent fuel cooling time, irradiation history and burnup for gamma dose rate determination of TRR spent fuels

Zohreh Gholamzadeh; Rohollah Adeli; Mahdi Keivani

Volume 2, Issue 1 , January 2021, , Pages 1-7

  ‎Routine gamma dosimetry of spent fuels in nuclear power stations is mandatory to manage their storage in dry or wet spent fuel storages‎. ‎Mostly the spent fuel gamma dose rate measurements out of the spent fuel pool is impossible because of the high exposures of the operators‎. ‎Therefore‎, ...  Read More

Radiation hazards from granite and bitumen in construction material site in Aniocha South Local Government Area of Delta State, South-South Nigeria

Blessing Okeoghene Ijabor; Akintayo Daniel Omojola; Augustine Onyema Nwabuoku; Funmilayo Ruth Omojola

Volume 4, Issue 2 , March 2023, , Pages 1-8

  The study is aimed at measuring the outdoor background ionizing radiation (BIR), the absorbed dose rate (ADR), the annual effective dose (AED) and excessive lifetime cancer risk (ELCR) at four sites in the Aniocha South local government area (LGA) of Delta State, denoted as A-D. The study was performed ...  Read More

Introducing a novel FDG synthesis method in Iran based on alkaline hydrolysis

‎Parviz Ashtari

Volume 1, Issue 1 , January 2020, , Pages 7-11

  ‎18F-FDG PET/CT is commonly used for evaluation and diagnostic of many types of cancer‎, ‎such as; tumor diagnosis‎, ‎treatment monitoring‎, ‎and radiation therapy planning‎. ‎Accurate diagnostic is needed in meticulous patient preparation‎, ‎including restrictions ...  Read More

Determination of coagulation time of in vivo cut bleeding treated by non-thermal atmospheric pressure plasma

‎Zahra Shahbazi Rad; ‎Fereydoun Abbasi Davani; ‎Gholamreza Etaati; ‎Samaneh Seifi

Volume 1, Issue 2 , June 2020, , Pages 7-11

  ‎The aim of this research was determination of the required time for coagulation of in vivo cut bleeding treated by non-thermal atmospheric pressure plasma‎. ‎To meet this‎, ‎an atmospheric pressure plasma jet device was designed and constructed‎. ‎Helium was used as working ...  Read More

Differentiation method for Compton edge characterization in organic scintillation detectors

‎Mohammad Javad Safari

Volume 1, Issue 4 , October 2020, , Pages 9-16

  ‎It is well-known that response function of organic scintillation detectors does not appear with photopeaks‎. ‎Instead‎, ‎their dominant feature is a continuum‎, ‎usually called the Compton edge that innately exposes the resolution characteristics of detection system‎. ...  Read More

Feasibility study of Mo-99 production using high-power electron Linac: Nuclear and thermal-mechanical analysis based on photoneutron interaction

Ali Taaghibi Khotbesara; Faezeh Rahmani; Farshad Ghasemi

Volume 2, Issue 1 , January 2021, , Pages 9-17

  ‎This work presents an alternative method for Mo-99 production as a parent nuclide of Tc-99m which is the most used radioisotope in diagnostic imaging processes‎. ‎Regarding to some benefits of accelerator-based methods over reactor-based methods for Mo-99 production‎, ‎the electron ...  Read More

Studying the effect of backgrounds on the determination of radiative thermal neutron capture cross-section in the Neutron Powder Diffraction facility of the Tehran Research Reactor

Mahya Pazoki; Hamid Jafari; Zohreh Gholamzadeh

Volume 4, Issue 2 , March 2023, , Pages 9-17

  Neutron data and cross-sections are highly regarded and are essential for developing nuclear equipment such as advanced fission and fusion reactors, accelerators, neutron shielding, physics studies, etc. The neutron cross-section should preferably be measured using a single-energy neutron beam, although ...  Read More

Optimization of beamline diameter in spot scanning proton therapy for minimization of secondary particles using finite element method

‎Amir Veiskarami; ‎Mahdi Sadeghi; ‎Dariush Sardari; ‎Shahryar Malekie

Volume 1, Issue 3 , August 2020, , Pages 11-16

  ‎Collision of protons with background gas and beamline wall in proton therapy causes the creation of secondary particles‎, ‎e.g. neutrons‎, ‎which results in more difficulties in curing the tumors‎. ‎In the present simulation-based study‎, ‎the optimum diameter of ...  Read More

A Geant4 study on dosimetric comparison between three kinds of radioactive esophageal stents to be used in treatment of advanced esophageal cancers

‎P‎ayam ‎Rafiepour; ‎Sh‎ahab ‎Sheibani; ‎D‎aryiush ‎Rezaey Uchbelagh; ‎H‎ossein Poorbaygi

Volume 1, Issue 1 , January 2020, , Pages 13-18

  ‎Utilizing radioactive stents is a usual method for treatment of advanced esophageal cancer‎. ‎It is necessary to investigate the dose distribution of radioactive esophageal stents before the clinical use‎. ‎This study presents a dosimetric comparison between three radioactive esophageal ...  Read More

Study of PWR transients by coupling of ANSYS-CFX with a kinetic model

‎Hossein Sharifian; ‎Mahdi Aghaie; ‎Ahmad Zolfaghari

Volume 1, Issue 2 , June 2020, , Pages 13-21

  ‎In this work‎, ‎dynamic responses of a WWER-1000 reactor in reactivity insertions are studied using a coupling method‎. ‎The ANSYS-CFX is implemented for thermal hydraulic study of the core and the point kinetic equation (PKE) is coupled as a FORTRAN subroutine‎. ‎For transient ...  Read More

Flow regimes classification and prediction of volume fractions of the gas-oil-water three-phase flow using Adaptive Neuro-fuzzy Inference System

‎Gholam Hossein Roshani; ‎Alimohammad Karami; ‎Ehsan Nazemi; ‎Cesar Marques Salgado

Volume 1, Issue 3 , August 2020, , Pages 17-26

  ‎The used metering technique in this study is based on the dual energy (Am-241 and Cs-137) gamma ray attenuation‎. ‎Two transmitted NaI detectors in the best orientation were used and four features were extracted and applied to the model‎. ‎This paper highlights the application of ...  Read More

Investigation of molten material retention during the large and small breaks LOCA and station blackout accident

Mohsen Salehi; Mohsen Shayesteh

Volume 1, Issue 4 , October 2020, , Pages 17-27

  ‎The analysis deals with the assessment of best estimate code RELAP5/SCDAP mod3.4 in the simulation of double-ended loss coolant accident as a LBOCA‎, ‎4 in break as a SBLOCA an SBO accident with considering except accumulator water where no core cooling water systems are available‎. ...  Read More

Effect of marker material on the dosimetric parameters of I-125 source (model 6711): Monte Carlo simulation

Payvand Taherparvar; Ali AziziGanjgah

Volume 4, Issue 2 , March 2023, , Pages 19-24

  Low energy I-125- seeds are considered as a common source in different brachytherapy techniques for treatment of different cancers. In this study, at first, we simulated and validated I-125 (model 6711) seed according to the TG-43U1 recommendation, by GEANT4 Monte Carlo toolkit. Moreover, we simulated ...  Read More

Three-dimensional solution of the forward and adjoint neutron diffusion equation using the generalized least squares finite element method

‎Farahnaz Saadatian Derakhshandeh

Volume 1, Issue 1 , January 2020, , Pages 19-27

  ‎Numerical solution of the multi-group static forward and adjoint neutron diffusion equation (NDE) using the Finite Elements Method (FEM) is investigated in detail‎. ‎A finite element approach based on the generalized least squares method is applied for the spatial discretization of the NDE ...  Read More

The use of artificial neural networks to distinguish naturally occurring radioactive materials from unauthorized radioactive materials using a plastic scintillation detector

‎Reza Ziyaee Sisakht; ‎Fereydoun Abbasi Davani‎; ‎Rouhollah Ghaderi

Volume 1, Issue 2 , June 2020, , Pages 23-26

  ‎Distinguishing naturally occurring radioactive (e.g. ceramics‎, ‎fertilizers‎, ‎etc.) from unauthorized materials (e.g. high enriched uranium‎, ‎Pu-239‎, ‎etc.) to reduce false alarms is a prominent characteristic of radiation monitoring port‎. ‎By employing ...  Read More

Computational study of the effect of sapphire neutron filter on reducing the neutron and secondary-gamma dose rate around the main shield of D channel in TRR

Zohreh Gholamzadeh

Volume 4, Issue 2 , March 2023, , Pages 25-33

  Simulation work provides valuable information on the behavior of different research reactor neutron analysis facilities. The present study considered neutron and secondary-gamma dose rate variations by applying a sapphire crystal inside the D channel in Tehran Research Reactor (TRR). The MCNPX computational ...  Read More

A simulation study on neutronic behavior of non-fissionable and fissionable materials of different geometries as spallation targets in ADS

‎Mohammad Amin Amirkhani‎; ‎Mostafa Hassanzadeh; ‎Safar Ali Safari

Volume 1, Issue 3 , August 2020, , Pages 29-36

  ‎Spallation process is the most significant process for neutron generation in industry and medicine‎. ‎This process has been used in the subcritical reactor core‎. ‎In this research‎, ‎we study the neutronic behavior of non-fissionable and fissionable spallation targets consists ...  Read More

A review of advanced SMRs particularly iPWRs regarding safety features‎, ‎economy issues‎, ‎innovative concepts‎, ‎and multi-purpose deployment

Afshin Hedayat

Volume 1, Issue 4 , October 2020, , Pages 29-53

  ‎Both of small and medium sized reactors and small modular reactors are called SMRs‎. ‎They are reviewed and discussed in this paper‎, ‎particularly integral Pressurized Water Reactors (iPWRs)‎. ‎Studies show that PWRs are the most interested‎, ‎designed and constructed ...  Read More

Analysis of the fusion hindrance phenomenon for 58Ni+54Fe fusion reaction using cold nuclear matter properties

‎Reza Gharaei

Volume 1, Issue 2 , June 2020, , Pages 27-33

  The role of saturation property of cold nuclear matter is‎ ‎examined in order to describe the steep falloff phenomenon of the‎ ‎measured fusion cross sections at energies far below the Coulomb‎ ‎barrier for 58Ni+54Fe colliding system‎. ‎For this aim‎, ‎the‎ ...  Read More

Calculation of dose uniformity ratio in irradiation cell of GC-220 using analytical method based on multipole moment expansion‎

‎P‎eiman ‎Rezaeian; ‎V‎ahideh ‎Ataenia; ‎S‎epideh ‎Shafiei

Volume 1, Issue 1 , January 2020, , Pages 29-32

  ‎In this paper‎, ‎dose uniformity ratio in irradiation cell of GC-220 is specifiedutilizing an analytical method based on the multipole moment expansion‎. ‎In this method‎, ‎the values of monople‎, ‎dipole and quadrupole moments for source arrangements of GC-220 are ...  Read More

Design and construction of the plasma water activation device

Malihe Omrani; Hossein Sadeghi; Samaneh Fazelpour

Volume 4, Issue 2 , March 2023, , Pages 35-37

  Design, construction, and experimental investigation of the plasma water activation device have been presented in this article. In this design, one of the electrodes, which is plate ss316, is placed in water. The other electrode which is made from tungsten is placed inside a glass tube and immersed in ...  Read More