Evaluation of the radioactivity of the pre-dominant gamma emitters in components used at high-energy proton accelerator facilities.

abstract：:The electrochemical etching (ECE) method enlarges charged particle tracks to enhance its applications in particular in health physics and radiation dosimetry. The ECE method is usually based on using a high frequency-high voltage (HF-HV) generator with 250-µm-thick polycarbonate track detectors (PCTDs). The authors' r...

journal_title：Radiation protection dosimetry

authors： Sohrabi M,Ramezani V

更新日期：2015-04-01 00:00:00

abstract：:The United Nations Environment Programme (UNEP) has performed a field survey at 11 sites located in Kosovo, where depleted uranium (DU) ammunitions were used by the North Atlantic Treaty Organization (NATO) during the last Balkans conflict (1999). Soil sampling was performed to assess the spread of DU ground contamina...

journal_title：Radiation protection dosimetry

authors： Sansone U,Stellato L,Jia G,Rosamilia S,Gaudino S,Barbizzi S,Belli M

更新日期：2001-01-01 00:00:00

abstract：:The aim of the present work is to investigate the possibility of using the properties of the thermoluminescent emission (TL) of Brazilian natural topaz for dosimetric applications. Topaz is an aluminium fluorsilicate with general composition of Al2(SiO4)(F,OH)2 found with relative abundance in Brazil and in other part...

journal_title：Radiation protection dosimetry

authors： Souza DN,Lima JF,Valerio ME,Caldas LV

更新日期：2002-01-01 00:00:00

abstract：:In this study, a method to discriminate between natural and other γ-ray sources from environmental γ-ray dose rate monitoring data was developed, and it was successfully applied to actual monitoring data around nuclear facilities. The environmental dose rate is generally monitored by NaI(Tl) detector systems in the lo...

journal_title：Radiation protection dosimetry

authors： Kumagai K,Ookubo H,Kimura H

更新日期：2015-11-01 00:00:00

abstract：:An oil and gas production facility in the western desert of Egypt was investigated for possible radiation risks due to the routine operation. Radium-226, Radium-228 and Potassium-40 were assessed in the soil samples collected from the adjacent soakaway pond. The average 226Ra, 228Ra and 40K activity concentrations wer...

journal_title：Radiation protection dosimetry

authors： Ebaid YY,Hassan Y,Elshemey WM

更新日期：2020-08-28 00:00:00

abstract：:A recoil-proton spectrometer was created by coupling a p-i-n diode with a polyethylene converter. The maximum detectable energy, imposed by the thickness of the totally depleted layer, is approximately 6 MeV. The minimum detectable energy is limited by the contribution of secondary electrons generated by photons in th...

journal_title：Radiation protection dosimetry

authors： Agosteo S,D'Angelo G,Fazzi A,Foglio Para A,Pola A,Ventura L,Zotto P

更新日期：2004-01-01 00:00:00

abstract：:The model and development is described of a new generation of Monte Carlo track structure codes. The code LEPHIST simulates full slowing down of low-energy proton history tracks in the range 1 keV-1 MeV and the code LEAHIST simulates low-energy alpha particle history tracks in the range 1 keV-8 MeV in water. All prima...

journal_title：Radiation protection dosimetry

authors： Uehara S,Nikjoo H

更新日期：2002-01-01 00:00:00

abstract：:The current revision of the Swiss Radiological Protection Ordinance aims to bring Swiss legislation in line with new international standards. In future, the control of radon exposure in dwellings will be based on a reference level of 300 Bq m(-3). Since this value is exceeded in >10 % of the buildings so far investiga...

journal_title：Radiation protection dosimetry

authors： Palacios Gruson M,Barazza F,Murith C,Ryf S

更新日期：2015-04-01 00:00:00

abstract：:A Monte Carlo based computational procedure for determining organ doses and effective doses has been described for two procedures used in newly developed image-guided radiation treatment: kilovoltage cone-beam computed tomography (kV CBCT) and mega-voltage computed tomography (MV CBCT). A whole-body patient computatio...

journal_title：Radiation protection dosimetry

authors： Gu J,Bednarz B,Xu XG,Jiang SB

更新日期：2008-01-01 00:00:00

abstract：:This communication describes two new instruments, based on multiple active thermal neutron detectors arranged within a single moderator, that permit to unfold the neutron spectrum (from thermal to hundreds of MeV) and to determine the corresponding integral quantities with only one exposure. This makes them especially...

journal_title：Radiation protection dosimetry

authors： Gómez-Ros JM,Bedogni R,Bortot D,Domingo C,Esposito A,Introini MV,Lorenzoli M,Mazzitelli G,Moraleda M,Pola A,Sacco D

更新日期：2017-04-01 00:00:00

abstract：:The Organic Bound Tritium (OBT) amount in the body may induce changes in the evaluation of the internal exposure to tritium, due to its different retention time relative to HTO. OBT measurements for urine are not performed routinely, mainly because of the lengthy work needed in preparation of the samples, when using t...

journal_title：Radiation protection dosimetry

authors： Gonen R,Marco R,German U,Katorza E,Alfassi ZB,Haquin G,Tshuva A,Pelled O

更新日期：2007-01-01 00:00:00

abstract：:Material activation assessment of a proposed accelerator-based boron neutron capture therapy facility was performed using the FLUKA Monte Carlo code to quantify the magnitude of the problem in terms of the isotope inventories, induced activities, and residual dose rates. Two simplified operation scenarios were conside...

journal_title：Radiation protection dosimetry

authors： Lai BL,Sheu RJ

更新日期：2018-08-01 00:00:00

abstract：:Results of performance tests verifying the dosimetric properties of dosimetric systems are published in various reports (e.g. IAEA and EURADOS). However, there is hardly any information in the open literature relating to the uncertainty in a dose measurement or in the annual dose, which is increased by failure of the ...

journal_title：Radiation protection dosimetry

authors： Stadtmann H,Figel M,Kamenopoulou V,Kluszczynski D,Roed H,Van Dijk J

更新日期：2004-01-01 00:00:00

abstract：:Occupational radiological protection (RP) is still a challenge in several clinical practices. ICRP has included specific recommendations and advice for occupational protection in most of the documents published in recent years and its current programme of work includes the preparation of documents with specific conten...

journal_title：Radiation protection dosimetry

authors： Vano E

更新日期：2015-04-01 00:00:00

abstract：:Lignite burning is one of the sources of technologically enhanced exposure to humans from natural radionuclides. In the preliminary study, part of the survey, the activity concentrations of (226)Ra, (232)Th and (40)K in 112 samples of feed lignites from seven lignite-fired power plants in Western Anatolia (Seyitömer, ...

journal_title：Radiation protection dosimetry

authors： Cam NF,Yaprak G,Eren E

更新日期：2010-12-01 00:00:00

abstract：:Indoor radon concentration levels in a large number of dwellings in Al-Madinah Al-Munawarah Province have been measured. Al-Madinah Al-Munawarah is in the western region of Saudi Arabia. It is the second holiest city in Islam after Mecca, because it is the burial place of the Islamic Prophet Muhammad. The city was div...

journal_title：Radiation protection dosimetry

authors： Mohamed RI,Alfull ZZ,Dawood ND

更新日期：2014-01-01 00:00:00

abstract：:In environmental radiation monitoring, the time-variable natural gamma radiation background complicates the nuclide identification and analysis of a gamma spectrum. A full spectrum analysis based on the noise adjusted singular value decomposition method for the description of the time-variable background and adjustmen...

journal_title：Radiation protection dosimetry

authors： Reinhardt S

更新日期：2014-08-01 00:00:00

abstract：:We developed a radiation detector based on an organic scintillator for spectrometry and dosimetry of out-of-field secondary neutrons from clinical proton beams. The detector consists of an EJ-299-34 crystalline organic scintillator, coupled by fiber optic cable to a silicon photomultiplier (SiPM). Proof of concept mea...

journal_title：Radiation protection dosimetry

authors： Beyer KA,Di Fulvio A,Stolarczyk L,Parol W,Mojzeszek N,Kopéc R,Clarke SD,Pozzi SA

更新日期：2018-08-01 00:00:00

abstract：:A widely used method in the planning of protective actions is to establish a stakeholder network to generate a comprehensive set of generic protective actions. The aim is to increase competence and build links for communication and coordination. The approach of this work was to systematically evaluate protective actio...

journal_title：Radiation protection dosimetry

authors： Sinkko K,Hämäläinen RP,Hänninen R

更新日期：2004-01-01 00:00:00

abstract：:Detailed data relating to patient dose have been acquired for 18, randomly chosen, patients undergoing coronary angiographies. During the procedure, dose-area product (DAP), kV and beam collimation were recorded for each projection. Total DAP, fluoroscopy time and number of cine frames were also noted. Patient effecti...

journal_title：Radiation protection dosimetry

authors： Lobotessi H,Karoussou A,Neofotistou V,Louisi A,Tsapaki V

更新日期：2001-01-01 00:00:00

abstract：:To assess the frequency of examination, image quality (IQ) and establishment of local diagnostic reference levels (LDRLs) in paediatric radiographic examinations. The X-ray device performance, film reject rate and IQ grading were assessed at Radiology Department of a referral and teaching children's hospital in Kenya....

journal_title：Radiation protection dosimetry

authors： Wambani JS,Korir GK,Korir IK,Kilaha S

更新日期：2013-05-01 00:00:00

abstract：:The current estimations of risk associated with medical imaging procedures rely on assessing the organ dose via direct measurements or simulation. The dose to each organ is assumed to be homogeneous. To take into account the differences in radiation sensitivities, the mean organ doses are weighted by a corresponding t...

journal_title：Radiation protection dosimetry

authors： Samei E,Li X,Chen B,Reiman R

更新日期：2013-06-01 00:00:00

abstract：:238U, 234U and 235U were determined in tap water from municipal water pipes that drew their supply from surface water or ground water in various locations in Poland. Average activity concentrations of 238U, 234U and 235U in tap water from surface water were 9.6 +/- 7.1, 12.8 +/- 9.7 and 0.41 +/- 0.31 Bq m(-3), respect...

journal_title：Radiation protection dosimetry

authors： Pietrzak-Flis Z,Kaminska I,Chrzanowski E

更新日期：2005-01-01 00:00:00

abstract：:A multipurpose anthropomorphic neck phantom was designed and fabricated for use in medical applications. The designed neck phantom is composed of seven elliptic cylindrical slices with a semi-major axis of 14 cm and a semi-minor axis of 12.5 cm, each having the thickness of 2 cm. The thyroid gland, bony part of the ne...

journal_title：Radiation protection dosimetry

authors： Mehdizadeh Naderi S,Sina S,Karimipoorfard M,Lotfalizadeh F,Entezarmahdi M,Moradi H,Faghihi R

更新日期：2016-03-01 00:00:00

abstract：:This study analyzes the exposure of the human torso to electromagnetic fields caused by wireless body-mounted or handheld devices. Because of the frequency and distance ranges from 30-5800 MHz and 10 to 200 mm, respectively, both near-field and far-field effects are considered. A generic body model and simulations of ...

journal_title：Radiation protection dosimetry

authors： Christ A,Samaras T,Neufeld E,Klingenböck A,Kuster N

更新日期：2007-01-01 00:00:00

abstract：:Thorium is used in many different industrial technologies and is widely found in nature. Internal contamination with thorium is considered as highly hazardous because of its radiological and chemical toxicities, which depend on the chemical form in which thorium appears. The assessment of the thorium body burden is th...

journal_title：Radiation protection dosimetry

authors： Genicot JL,Bruggeman M

更新日期：2001-01-01 00:00:00

abstract：:In recent years, international organisations involved in radiation protection and public health have produced new guidance, recommendations and requirements aiming better protection from radon exposure. These organisations have often worked in close collaboration in order to facilitate the establishment of harmonised ...

journal_title：Radiation protection dosimetry

authors： Bochicchio F

更新日期：2014-07-01 00:00:00

abstract：:This work aims at presenting a study using Monte Carlo simulation of a Multileaf Shielding (MLS) System designed to be used for the protection of patients who undergo radiotherapy treatment, against undesired exposure to neutrons produced in the components of the medical linear accelerator heads. The choice of radioth...

journal_title：Radiation protection dosimetry

authors： Rebello WF,Silva AX,Facure A

更新日期：2008-01-01 00:00:00

abstract：:Gadolinium is a competent neutron conversion material for neutron detection due to its extremely high neutron capture cross section. It differs from the other neutron reactive materials by emitting large amounts of low-energy electrons for the consequent signal generation in a detector. Such low-energy electrons, thou...

journal_title：Radiation protection dosimetry

authors： Kandlakunta P,Cao L

更新日期：2012-09-01 00:00:00

abstract：:Regarding in vivo L-band dosimetry with human teeth, a number of preliminary experiments were carried out that were linked to the resonators response and the relative contribution of enamel to the EPR signal intensity of irradiated whole teeth. The sensitivity of the extended loop resonator varies in the antenna plane...

journal_title：Radiation protection dosimetry

authors： Zdravkova M,Wieser A,El-Faramawy N,Gallez B,Debuyst R

更新日期：2002-01-01 00:00:00