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    Low-energy neutron flux measurement using a resonance absorption filter surrounding a lithium glass scintillator 

    Type: Journal Paper
    Author : نیما قلعه; رحیم کوهی فایق دهکردی; S. Hamidi; Nima Ghal-Eh; Rahim Koohi-Fayegh
    Year: 2007
    Abstract:

    filter surrounding a miniature-type lithium glass scintillator. the count with and without the filter surrounding the detector gives the number of resonance-energy neutrons. Some preliminary results and a comparison with the MCNP code are shown....

    دز سنجی پرتوهای مصنوعی در محیط زیست با استفاده از کد MCNP 

    Type: Conference Paper
    Author : میترا کیانی نسب; سیدهاشم میری حکیم آباد; لاله رفعت متولی; mitra kiani nasab; Seyyed Hashem Miri Hakimabad; Laleh Rafat Motavali
    Year: 2011
    Abstract:

    Nuclear disaster spread radioisotopes greatly to the environment. The isotopes fall on the surface earth, radiate and pollute the environment. So dosimetric data for estimating the accident is necessary. For this reason, ...

    Calculation of neutron self-shielding factor and its effect on estimating amount of sample matter in LS-PGNAA 

    Type: Conference Paper
    Author : پوران نصراله زاده زواردهی; سیدهاشم میری حکیم آباد; لاله رفعت متولی; pooran nasrolahzade zavardehi; Seyyed Hashem Miri Hakimabad; Laleh Rafat Motavali
    Year: 2010
    Abstract:

    factor is calculated and its effect on correction of full energy peak in prompt gamma spectrum is investigated. For calculating this factor a simulation was carried out using MCNP code. samples put in cylindrical PTFE (poly tetra fluor ethylene) container...

    The investigation of Am - Be neutron source shield effect used on landmine detection 

    Type: Journal Paper
    Author : D. Rezaei Ochbelagh; سیدهاشم میری حکیم آباد; رضا ایزدی نجف آبادی; Seyyed Hashem Miri Hakimabad; Reza Izadi Najafabadi
    Year: 2007
    Abstract:

    In this work, experiments were carried out to investigate the possible use of neutron backscattering for the detection of sample buried in the soil. A series of Monte Carlo simulations were performed to study the complexity ...

    Momte Carlo simulation of pulse pile-up effect in gamma spectrum of a PGNAA system 

    Type: Journal Paper
    Author : Ali Asghar Mowlavi; محمدهادی هادی زاده یزدی; Mohammad Hadi Hadizadeh Yazdi
    Year: 2011
    Abstract:

    We have applied a pile-up Monte Carlo simulation code on gamma spectrum of a prompt gamma

    neutron activation analysis (PGNAA) system. The code has been run in nonparalyzable mode for a

    specific geometry of a ...

    Calibration Constant of a Silver Activated Geiger Counter Used for Neutron Efficiency Measurements in Plasma Focus Devices: Theoretical vs. Experimental Studies 

    Type: Journal Paper
    Author : G. R. Etaati; R. Amrollahi; V. Doust-Mohammadi; نیما قلعه; M. Habibi; Nima Ghal-Eh
    Year: 2010
    Abstract:

    The silver activated Geiger counters are frequently used for measuring pulsed neutron fluxes especially in plasma focus devices. These counters basically utilize a Geiger-Mueller (GM) counter surrounded by a silver layer ...

    The effect of source shield on landmine detection 

    Type: Journal Paper
    Author : D. Rezaei Ochbelagh; سیدهاشم میری حکیم آباد; رضا ایزدی نجف آبادی; Seyyed Hashem Miri Hakimabad; Reza Izadi Najafabadi
    Year: 2007
    Abstract:

    neutron

    backscattering are nuclear-based methods used for

    landmine detection. The aim of this study is to use

    backscattered neutron for landmine detection.

    Materials and Methods: MCNP code, a well-known

    Monte Carlo...

    Optimization of a Detector Collimator for Use in a Gamma-Ray Backscattering Device for Anti-Personal Landmines Detection 

    Type: Journal Paper
    Author : حسین توکلی عنبران; سیدهاشم میری حکیم آباد; رضا ایزدی نجف آبادی; Seyyed Hashem Miri Hakimabad; Reza Izadi Najafabadi
    Year: 2009
    Abstract:

    In the present study, a new detector collimator has been designed to detect the buried anti-personal (AP) landmines for use in gamma-ray backscattering device, with Monte Carlo method. The new detector collimator is made ...

    Activation rate uniformity in a bilateral IVNAA facility for two anthropomorphic phantoms 

    Type: Journal Paper
    Author : سیدهاشم میری حکیم آباد; لاله رفعت متولی; کیهان دخت کریمی شهری; Seyyed Hashem Miri Hakimabad; Laleh Rafat Motavali; Keyhandokht Karimi shahri
    Year: 2010
    Abstract:

    Activation rate uniformity is the first property which is considered in the design of a prompt g -ray in vivo neutron activation analysis facility. Preliminary studies on the activation rate distribution in the body can ...

    Monte Carlo Calculation of Relative Dose Distribution and Dosimetry Parameters for an 192Ir Source in a Water Phantom Using MCNP4C 

    Type: Journal Paper
    Author : A. Binesh; A. A. Molawi; هادی عربشاهی; Hadi Arabshahi
    Year: 2010
    Abstract:

    The dose distribution has been calculated around a high dose rate

    192Ir source located in the center of 30 cm ×30 cm ×30 cm water

    phantom cube using MCNP code by Monte Carlo method. The

    percentage depth dose (PDD) variation...

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