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

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

‎M‎ehrnaz Zehtabvar; ‎D‎ariush Sardari; ‎Gh‎olamreza ‎Jahanfarnia

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

http://dx.doi.org/10.22034/rpe.2020.57882

Abstract
  ‎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

2. 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 , Spring 2020, , Pages 1-5

http://dx.doi.org/10.22034/rpe.2020.63474

Abstract
  ‎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

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

Mohammadreza Abbasi

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

http://dx.doi.org/10.22034/rpe.2020.89324

Abstract
  ‎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

4. 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 , Autumn 2020, , Pages 1-8

http://dx.doi.org/10.22034/rpe.2020.104838

Abstract
  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

5. 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 , Winter 2021, , Pages 1-7

http://dx.doi.org/10.22034/rpe.2021.242746.1021

Abstract
  ‎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

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

‎Parviz Ashtari

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

http://dx.doi.org/10.22034/rpe.2020.57883

Abstract
  ‎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

7. 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 , Spring 2020, , Pages 7-11

http://dx.doi.org/10.22034/rpe.2020.63475

Abstract
  ‎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

8. Differentiation method for Compton edge characterization in organic scintillation detectors

‎Mohammad Javad Safari

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

http://dx.doi.org/10.22034/rpe.2020.104839

Abstract
  ‎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

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

Faezeh Rahmani; Ali Taaghibi Khotbesara; Farshad Ghasemi

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

http://dx.doi.org/10.22034/rpe.2021.252856.1026

Abstract
  ‎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

10. 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 , Summer 2020, , Pages 11-16

http://dx.doi.org/10.22034/rpe.2020.89327

Abstract
  ‎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

11. 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 , Winter 2020, , Pages 13-18

http://dx.doi.org/10.22034/rpe.2020.57884

Abstract
  ‎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

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

‎Hossein Sharifian; ‎Mahdi Aghaie; ‎Ahmad Zolfaghari

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

http://dx.doi.org/10.22034/rpe.2020.63477

Abstract
  ‎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

13. 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 , Summer 2020, , Pages 17-26

http://dx.doi.org/10.22034/rpe.2020.89328

Abstract
  ‎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

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

Mohsen Salehi; Mohsen Shayesteh

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

http://dx.doi.org/10.22034/rpe.2020.104840

Abstract
  ‎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

15. 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 , Winter 2020, , Pages 19-27

http://dx.doi.org/10.22034/rpe.2020.57885

Abstract
  ‎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

16. 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 , Spring 2020, , Pages 23-26

http://dx.doi.org/10.22034/rpe.2020.63478

Abstract
  ‎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

17. 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 , Summer 2020, , Pages 29-36

http://dx.doi.org/10.22034/rpe.2020.89329

Abstract
  ‎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

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

Afshin Hedayat

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

http://dx.doi.org/10.22034/rpe.2020.104841

Abstract
  ‎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

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

‎Reza Gharaei

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

http://dx.doi.org/10.22034/rpe.2020.63479

Abstract
  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

20. 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 , Winter 2020, , Pages 29-32

http://dx.doi.org/10.22034/rpe.2020.57886

Abstract
  ‎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

21. An analytical and Monte Carlo investigation of the sufficiency of the present shielding of PET/CT imaging system at Tehran's Shariati hospital‎

‎Fereshteh Gholami; ‎Ehsan Alibeigi; ‎Mojtaba Shamsaei-Zafarghandi; ‎Ehsan Nazemi

Volume 1, Issue 3 , Summer 2020, , Pages 37-41

http://dx.doi.org/10.22034/rpe.2020.89330

Abstract
  ‎By the rapid development of imaging systems such as PET/CT for diagnosis of cancer‎, ‎the protection of staff and public has become a main health concern‎. ‎Due to serious and irreversible harms of ionization radiations‎, ‎protection of all those who are exposed is the main ...  Read More

22. Bohr Hamiltonian and interplay between γ-stable and γ-rigid collective motions with both Harmonic oscillation and Ring-shaped potentials for the γ-part.

Nahid Sohebi; Mahdi Eshghi; Majid Hamzavi; Mohsen Bigdeli

Volume 1, Issue 4 , Autumn 2020, , Pages 55-64

http://dx.doi.org/10.22034/rpe.2020.104842

Abstract
  ‎In the present work‎, ‎the eigenvalue and eigenvector has been obtained by the Bohr Hamiltonian for even-even nuclei‎. ‎The competition between γ-stable and γ-rigid collective motions has been created in the presence of the rigidity parameter‎. ‎The β-part ...  Read More

23. Reduction of radiation exposure probability at Tehran research reactor equipped with a second shutdown system

‎E‎hsan ‎Boustani; S‎amad ‎Khakshournia

Volume 1, Issue 1 , Winter 2020, , Pages 33-38

http://dx.doi.org/10.22034/rpe.2020.57887

Abstract
  ‎A second shutdown system (SSS) is designed for the Tehran Research Reactor (TRR) completely independent and diverse from the existing First Shutdown System (FSS)‎. ‎Given limitations‎, ‎specifications‎, ‎and requirements of the reactor‎, ‎the design of SSS is based ...  Read More

24. Analytical range evaluation for therapeutic protons in stack of materials

Fatemeh Sadat Rasouli

Volume 1, Issue 2 , Spring 2020, , Pages 35-39

http://dx.doi.org/10.22034/rpe.2020.63480

Abstract
  ‎As one of the most clinically relevant parameters in proton radiotherapy‎, ‎the range of incident particles can be measured either by counting the number of protons or through depth-dose evaluation in the target‎. ‎In the latter‎, ‎the range is defined as the depth in the ...  Read More

25. ThO2 spent fuel assembly’s gamma dose rate dependency to burnup and cooling time

Zohreh Gholamzadeh; Mohadeseh Gholshanian; Seyed Mohammad Mirvakili

Volume 1, Issue 3 , Summer 2020, , Pages 43-48

http://dx.doi.org/10.22034/rpe.2020.104833

Abstract
  Today thorium based fuels are being investigated as an alternative fuel technology. However, the majority of thorium fuel research studies are limited to reactor physics investigations, which leaves a gap for dose evaluation and shielding concerns of such spent fuels. The present work investigates thorium ...  Read More