A5045867763- Radiation Dose and Imaging
- Radioactivity and Radon Measurements
- Nuclear Physics and Applications
- Radiation Therapy and Dosimetry
- Radiation Detection and Scintillator Technologies
- Advanced Radiotherapy Techniques
- Radioactive element chemistry and processing
- Advanced X-ray and CT Imaging
- Radioactive contamination and transfer
- Nuclear reactor physics and engineering
- Graphite, nuclear technology, radiation studies
- Radioactive Decay and Measurement Techniques
- Digital Radiography and Breast Imaging
- X-ray Spectroscopy and Fluorescence Analysis
- Integrated Circuits and Semiconductor Failure Analysis
- Nuclear Materials and Properties
- Nuclear and radioactivity studies
Bhabha Atomic Research Centre
2012-2024
Internal contamination due to high-energy photon (HEP) emitters is assessed using a scanning bed whole-body monitor housed in steel room at the Bhabha Atomic Research Centre (BARC). The consists of (203 mm diameter×102 thickness) NaI(Tl) detector and calibrated Reference BOMAB phantom representative an average Indian radiation worker. However, series different size physical phantoms are required account for variability workers, which both expensive time consuming. Therefore, theoretical...
The ICRP/ICRU adult male reference voxel phantom incorporated in Monte Carlo code FLUKA is used for estimating specific absorbed fractions (SAFs) photons due to the presence of internal radioactive contamination human respiratory tract (RT). compartments RT, i.e. extrathoracic (ET1 and ET2) thoracic (bronchi, bronchioles, alveolar interstitial) regions, lymph nodes both regions lungs are considered as source organs. nine organs having high tissue weighting factors such colon, lungs, stomach...
This study presents the simulation results for 10.16 cm diameter and 7.62 thickness NaI(Tl) detector response, which is housed in a partially shielded scanning bed whole-body monitor (WBM), due to activity distributed axial cavities provided Indian reference BOMAB phantom. Experimental detection efficiency (DE) cavity distribution (ACAD) this phantom photon emissions of (133)Ba, (137)Cs (60)Co used validate DEs estimated using Monte Carlo code FLUKA. Simulations are also carried out estimate...
Journal Article Assessment of uncertainties in the lung activity measurement low-energy photon emitters using Monte Carlo simulation ICRP male thorax voxel phantom Get access M. Y. Nadar, Nadar * Internal Dosimetry Section, Radiation Safety Systems Division, Bhabha Atomic Research Centre, Mumbai 400085, India *Corresponding author: minalyn@barc.gov.in Search for other works by this author on: Oxford Academic PubMed Google Scholar D. K. Akar, Akar Rao, Rao S. Kulkarni, Kulkarni Pradeepkumar...
This paper describes a methodology to estimate embedded activity of (241)Am and Pu isotopes in wound at an unknown depth. Theoretical calibration array high-purity germanium detectors is carried out using the Monte Carlo code 'FLUKA' for source different depths soft tissue phantom dimension 10 × 4 cm(3) simulating palm worker. It observed that, case contamination due pure (241)Am, ratio counts 59.5 17.8 keV (Ratio 1) should be used evaluate depth, whereas 26.3 2) when mixture compounds....
The adult reference male and female computational voxel phantoms recommended by ICRP are adapted into the Monte Carlo transport code FLUKA. FLUKA is then utilised for computation of dose conversion coefficients (DCCs) expressed in absorbed per air kerma free-in-air colon, lungs, stomach wall, breast, gonads, urinary bladder, oesophagus, liver thyroid due to a broad parallel beam mono-energetic photons impinging anterior-posterior posterior-anterior directions energy range 15 keV-10 MeV....
This paper summarizes the results of an intercomparison on use ICRP Reference Computational Phantoms with radiation transport codes, which was organized by EURADOS working group 6. Three exercises are described: exposure to anterior-posterior (AP) photon point source, AP neutron and two typical medical X-ray examinations. The three received 17, 8 solutions, respectively. Participants originated from fifteen different countries, used a wide range Monte Carlo codes. Due difficulties in...
EURADOS Working Group 6 has organized an intercomparison exercise on the use of ICRP Reference Computational Phantoms with radiation transport codes. This paper summarizes results a specific task from modelling internal sources. The quantities to be calculated were absorbed fractions and for monoenergetic photon electron sources as well S-values two radionuclides in four source organs. Twelve participants eleven countries participated this using Monte Carlo codes FLUKA, Geant4, MCNP code...
Journal Article Monte Carlo simulation of skull and knee voxel phantoms for the assessment skeletal burden low-energy photon emitters Get access M. Y. Nadar, Nadar * Internal Dosimetry Section, Radiation Safety Systems Division, Bhabha Atomic Research Centre, Mumbai 400085, India *Corresponding author: minalyn@barc.gov.in Search other works by this author on: Oxford Academic PubMed Google Scholar D. K. Akar, Akar H. Patni, Patni I. S. Singh, Singh L. Mishra, Mishra Rao, Rao Pradeepkumar...
In routine monitoring of radiation workers to detect internal contamination due Pu/Am, it is assumed that intake has occurred at the midpoint interval. Radiation worker normally monitored end annual interval, within a span ±1 month under in vivo program. An uncertainty introduced estimation as time can vary over entire this work, uncertainties Type M and S compounds Pu/Am are evaluated unknown for biennial frequency.
Chronic inhalation intake of radionuclides is possible for radiation workers in the nuclear industry. The International Commission on Radiological Protection (ICRP) provides organ retention fractions as well daily urinary and fecal excretion chronic various radionuclides. In this study, were estimated constant (CCI) realistic (RCI) scenarios. CCI a 1 Bq, RCI an 1.4 Bq five working days followed by two gap. Radiologically important such 239Pu, 60Co, 137Cs, 131I, 3H having long, moderate,...
In case of internal contamination actinides by ingestion pathway, activity will be transferred to various regions the alimentary tract over a period time. this article, counting efficiencies (CEs) Phoswich and an array HPGe detectors are estimated for source in voxel phantom. The phantom as well Phoswich, three incorporated Monte Carlo code 'FLUKA'. Human model is solved using default parameters identify different compartments where accumulate after intake 1 Bq function Accordingly, CEs...