Editorial Board
Publication date: September 2019Source: Perspectives in Science, Volume 12Author(s): (Source: Perspectives in Science)
Source: Perspectives in Science - December 10, 2019 Category: Science Source Type: research
Editorial
Publication date: September 2019Source: Perspectives in Science, Volume 12Author(s): A. Nourreddine, R. Barillon, L. Font (Source: Perspectives in Science)
Source: Perspectives in Science - December 10, 2019 Category: Science Source Type: research
Determination of number and diameter of superheated droplets in bubble detectors (BD) of Type T-12 by irradiation with high energy heavy ions 56Fe, 84Kr and 132Xe at accelerator
Publication date: Available online 7 August 2019Source: Perspectives in ScienceAuthor(s): S.-L. Guo, T. Doke, D.-H. Zhang, B.-L. Chen, L. Li, J.-S. Li, N. Hasebe, N. Yasuda, T. MurakamiAbstractThe number (n) and diameter (d) of superheated droplets in bubble detectors of Type T-12 have been determined with high-energy heavy ions 56Fe, 84Kr and 132Xe at HIMAC accelerator in the National Institute of Radiological Sciences (NIRS), Chiba Japan. The approach to determining the number and diameter of superheated droplets is based on determination of (1) the average gap distance (g) between two neighboring bubbles in a track of h...
Source: Perspectives in Science - August 8, 2019 Category: Science Source Type: research
FOOT: a new experiment to measure nuclear fragmentation at intermediate energies
Publication date: September 2019Source: Perspectives in Science, Volume 12Author(s): S.M. Valle, A. Alexandrov, G. Ambrosi, S. Argirò, G. Battistoni, N. Belcari, S. Biondi, M.G. Bisogni, G. Bruni, S. Brambilla, N. Camarlinghi, P. Cerello, E. Ciarrocchi, A. Clozza, G. De Lellis, A. Di Crescenzo, M. Durante, M. Emde, R. Faccini, V. FerreroSummaryCharged particle therapy exploits proton or 12C beams to treat deep-seated solid tumors. Due to the advantageous characteristics of charged particles energy deposition in matter, the maximum of the dose is released to the tumor at the end of the beam range, in the Bragg peak region....
Source: Perspectives in Science - August 7, 2019 Category: Science Source Type: research
Passive etched track detectors application in outdoor radon monitoring
Publication date: Available online 12 July 2019Source: Perspectives in ScienceAuthor(s): J.M. Wasikiewicz, Z. Daraktchieva, C.B. HowarthAbstractOver 18 months long measurements of outdoor radon in three areas (a total of 69 locations) in England were conducted between years 2015 and 2017 using PADC based passive nuclear track detectors. Special measurement equipment and protocols to counteract unfavourable weather conditions have been designed, developed and optimised for the low level radon concentration. (Source: Perspectives in Science)
Source: Perspectives in Science - July 13, 2019 Category: Science Source Type: research
The FOOT (FragmentatiOn Of Target) experiment
Publication date: Available online 2 July 2019Source: Perspectives in ScienceAuthor(s): S.M. Valle, A. Alexandrov, G. Ambrosi, S. Argirò, G. Battistoni, N. Belcari, S. Biondi, M.G. Bisogni, G. Bruni, S. Brambilla, N. Camarlinghi, P. Cerello, E. Ciarrocchi, A. Clozza, G. De Lellis, A. Di Crescenzo, M. Durante, M. Emde, R. Faccini, V. FerreroAbstractParticle therapy uses proton or 12C beams to treat deep-seated solid tumors. Due to the advantageous characteristics of charged particles energy deposition in matter, the maximum of the dose is released to the tumor at the end of the beam range, in the Bragg peak region. However...
Source: Perspectives in Science - July 3, 2019 Category: Science Source Type: research
Analysis of dosimetric properties in the field of radiotherapy of glucose irradiated by megavoltage X photons, electrons and analyzed by EPR spectroscopy
This study consists of irradiating samples of glucose by megavoltage X photons and electrons delivered by a particle accelerator used in radiotherapy. After irradiation, the samples were analyzed by EPR. The measurements obtained on samples placed at different depth in a phantom of PolyMethyl Methacrylate “PMMA” have firstly identified the depths corresponding to the maximum dose deposition for both particles and samples used. Analysis by EPR showed that the threshold measurable dose for this dosimetric system is about 2 Gy. The variation of curves obtained from the peak-to-peak EPR intensity, or the results of th...
Source: Perspectives in Science - June 30, 2019 Category: Science Source Type: research
Dosimetric characterization of MgB4O7:Ce,Li as an optically stimulated dosimeter for photon beam radiotherapy
Publication date: Available online 28 June 2019Source: Perspectives in ScienceAuthor(s): Luiza Freire de Souza, Divanizia N. Souza, Gerardo B. Rivera, Rogerio M. Vidal, Linda V.E. CaldasAbstractCurrently there is a growing interest in the development of optically stimulated luminescence (OSL) dosimeters that may be useful for assessing the neutron flux contribution on the doses in radiotherapy due to neutrons produced in the interaction of megavoltage photon beams. In this work, OSL responses of MgB4O7:Ce,Li with 11B are presented for some photon beams, including 6 MV and 10 MV. For 10 MV, the behavior of the phosphor cont...
Source: Perspectives in Science - June 30, 2019 Category: Science Source Type: research
Emulsion detector for future experiment SHiP at CERN
Publication date: Available online 28 June 2019Source: Perspectives in ScienceAuthor(s): Nina Konovalova, on behalf of the SHiP CollaborationAbstractThe new general-purpose fixed target experiment SHiP (Search for Hidden Particles) at the CERN SPS (Super Proton Synchrotron) is aimed at research in the field of Beyond Standard Model (BSM) physics and of tau-neutrino physics. The Emulsion Neutrino Detector will be one of the main elements in the SHiP detector design. It is intended for search for Dark Matter scattering on electrons of nuclear emulsion and for tau-neutrino and anti tau-neutrino direct observation, and study t...
Source: Perspectives in Science - June 30, 2019 Category: Science Source Type: research
Empirical relationship between detection thresholds and physical parameters of different Nuclear Track Detectors
Publication date: Available online 28 June 2019Source: Perspectives in ScienceAuthor(s): Rupamoy Bhattacharyya, S. Dey, Sanjay K. Ghosh, A. Maulik, Sibaji Raha, D. SyamAbstractThe relationship between different physical parameters of various polymers (e.g., CR-39, Lexan, PET, etc.) used as Nuclear Track Detectors (NTDs) and their intrinsic detection thresholds were investigated. A strong correlation was found between the electrical resistivity and detection thresholds of the NTDs and from that an empirical relationship between the two established. The predicted value of the detection threshold for Perspex obtained from tha...
Source: Perspectives in Science - June 30, 2019 Category: Science Source Type: research
Annual effective dose and excess life time cancer risk assessment from tobacco plants
Publication date: Available online 28 June 2019Source: Perspectives in ScienceAuthor(s): D. Boumala, A. Belafrites, A. Tedjani, C. Mavon, J.-E. GroetzAbstractCigarette smoking is one of the pathways that might cause radiation exposure due to the presence of radioactive elements in tobacco leaves used in the manufacture of cigarettes. From the health point of view, the knowledge of radioactivity content of the various radionuclides in tobacco leaves and their derivative products is important to assess the radiological effects associated with tobacco smoking for smokers. In this work, naturally occurring radionuclides 226Ra,...
Source: Perspectives in Science - June 30, 2019 Category: Science Source Type: research
Assessment of computed tomography dose index (CTDI) using the platform GEANT4/GATE
Publication date: Available online 28 June 2019Source: Perspectives in ScienceAuthor(s): M. Mkimel, M.R. Mesradi, R. El Baydaoui, Y. Toufique, Z. Aitelcadi, A. El Kharrim, A. HilaliAbstractAbsorbed dose during a CT exam can be estimated by the computed tomography dose index (CTDI). The aim of this study is to validate a simulated CTDI with measured data for a 16-slice CT system. To measure the CTDI we have used an ion chamber, electrometer and two Polymethylmethacrylate (PMMA) phantoms (head and body). GATE (GEANT4 Application for Tomographic Emission) platform is a Monte Carlo code for medical physics applications, especi...
Source: Perspectives in Science - June 30, 2019 Category: Science Source Type: research
Laser microdissection system applied in improving FT-TIMS technique
Publication date: Available online 28 June 2019Source: Perspectives in ScienceAuthor(s): Yan Chen, Chang-Kun Xu, Yong-Gang Zhao, Shi-Lun Guo, Li-Li Li, Zhi-Yuan Chang, Guo-Rong LiuAbstractA laser microdissection system was used for isolating fission track stars to improve the cutting efficiency in the FT-TIMS particle analytical technique. The background interference of track detectors to determine isotopic ratios was studied. Several swipe samples were successfully measured for particle analysis by FT-TIMS. The results show that the laser microdissection system could effectively improve the ability of FT-TIMS particle ana...
Source: Perspectives in Science - June 30, 2019 Category: Science Source Type: research
210Po as a source of natural radioactivity in cigarettes distributed in the Philippines
Publication date: Available online 28 June 2019Source: Perspectives in ScienceAuthor(s): Kazuki Iwaoka, Eliza B. Enriquez, Kazuaki Yajima, Masahiro Hosoda, Shinji Tokonami, Hidenori Yonehara, Teofilo Y. Garcia, Reiko KandaAbstractThe natural radioactive nuclides especially 210Po, are volatilized at the temperature (600 – 800 °C) of a burning cigarette and are taken into the human body. Therefore, analysis of natural radioactivity of 210Po in cigarettes and the effective dose to smokers should be evaluated. The activity concentration of 210Po in sixteen brands of Philippine cigarettes was measured by alpha spectrome...
Source: Perspectives in Science - June 30, 2019 Category: Science Source Type: research
Identification and harmfulness analysis of solid particles contained in medical injections and their removal by nuclear track membranes
Publication date: Available online 28 June 2019Source: Perspectives in ScienceAuthor(s): Jian-Xin Yang, Zhi-Bo He, Shi-Lun GuoAbstractTwo types of cascade nuclear track filters have been developed: (1) Cascade filter made of polypropylene (PP) fiber membrane as preliminary filter and nuclear track membrane (NTM) as terminal filter; (2) Nylon tortuous-pore membrane as preliminary filter and NTM as terminal filter. Removal of solid particles by the cascade filters has been investigated. The solid particles studied include glass shards from broken ampoules and rubber fragments from rubber covers (plugs) of medical bottles. Wh...
Source: Perspectives in Science - June 30, 2019 Category: Science Source Type: research
