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Tohidinia MR, Talaee O, Amiri F, Khateri H, Mohseni H. EVALUATION OF THE OBSERVANCE OF RADIATION PROTECTION PRINCIPLES IN KERMANSHAH PROVINCE (WEST OF IRAN) 2020: CROSS-SECTIONAL STUDY. Radiat Prot Dosimetry 2023; 199:ncac272-229. [PMID: 36566504 DOI: 10.1093/rpd/ncac272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 11/01/2022] [Accepted: 11/17/2022] [Indexed: 06/17/2023]
Abstract
In this descriptive cross-sectional study by census method, the performance of 116 radiographers in the target centers was evaluated in relation to the observance of radiation protection principles with respect to patients, patient companion and radiographers. The data collection tool was a checklist containing 34 principles of radiation protection that were used after confirmation of its continuity and justifiability. The results showed that only in (39.2%) 45 radiographers the observance rate of the principles of radiation protection was acceptable. The highest and lowest levels in which radiographers observed protective principles were observance of protective principles with respect to themselves (60.8%) and protective principles respect of the patient companion (6.3%), respectively. According to the findings, radiation protection principles are not systematically designed, implemented, controlled and monitored by radiographers, and less than half of the radiographers observe the protection principles at the optimal level.
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Affiliation(s)
- M R Tohidinia
- Radiology and Nuclear Medicine Department, Paramedical School, Kermanshah University of Medical Sciences, 6715847141 Kermanshah, Iran
| | - O Talaee
- Department of Nuclear Engineering, Faculty of Mechanical Engineering, University of Shiraz, PO Box 71348-14336, Shiraz, Iran
| | - F Amiri
- Radiology and Nuclear Medicine Department, Paramedical School, Kermanshah University of Medical Sciences, 6715847141 Kermanshah, Iran
| | - H Khateri
- Radiology and Nuclear Medicine Department, Paramedical School, Kermanshah University of Medical Sciences, 6715847141 Kermanshah, Iran
| | - H Mohseni
- Radiology and Nuclear Medicine Department, Paramedical School, Kermanshah University of Medical Sciences, 6715847141 Kermanshah, Iran
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Wallner M, Eland JHD, Squibb RJ, Andersson J, Roos AH, Singh R, Talaee O, Koulentianos D, Piancastelli MN, Simon M, Feifel R. Coulomb explosion of CD 3I induced by single photon deep inner-shell ionisation. Sci Rep 2020; 10:1246. [PMID: 31988321 PMCID: PMC6985119 DOI: 10.1038/s41598-020-58251-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 01/13/2020] [Indexed: 12/05/2022] Open
Abstract
L-shell ionisation and subsequent Coulomb explosion of fully deuterated methyl iodide, CD3I, irradiated with hard X-rays has been examined by a time-of-flight multi-ion coincidence technique. The core vacancies relax efficiently by Auger cascades, leading to charge states up to 16+. The dynamics of the Coulomb explosion process are investigated by calculating the ions’ flight times numerically based on a geometric model of the experimental apparatus, for comparison with the experimental data. A parametric model of the explosion, previously introduced for multi-photon induced Coulomb explosion, is applied in numerical simulations, giving good agreement with the experimental results for medium charge states. Deviations for higher charges suggest the need to include nuclear motion in a putatively more complete model. Detection efficiency corrections from the simulations are used to determine the true distributions of molecular charge states produced by initial L1, L2 and L3 ionisation.
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Affiliation(s)
- M Wallner
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - J H D Eland
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden.,Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, United Kingdom
| | - R J Squibb
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - J Andersson
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - A Hult Roos
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - R Singh
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
| | - O Talaee
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden.,Nano and Molecular Systems Research Unit, University of Oulu, P.O. Box 3000, FI-90014, Oulu, Finland
| | - D Koulentianos
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden.,Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005, Paris, Cedex 05, France
| | - M N Piancastelli
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005, Paris, Cedex 05, France.,Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20, Uppsala, Sweden
| | - M Simon
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005, Paris, Cedex 05, France.,Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, F-91192, Gif-sur-Yvette, Cedex, France
| | - R Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden.
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Andersson J, Zagorodskikh S, Roos AH, Talaee O, Squibb RJ, Koulentianos D, Wallner M, Zhaunerchyk V, Singh R, Eland JHD, Rost JM, Feifel R. Parametrization of energy sharing distributions in direct double photoionization of He. Sci Rep 2019; 9:17883. [PMID: 31784628 PMCID: PMC6884530 DOI: 10.1038/s41598-019-53545-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 10/31/2019] [Indexed: 11/18/2022] Open
Abstract
We present experimental results on the characteristic sharing of available excess energy, ranging from 11–221 eV, between two electrons in single-photon direct double ionization of He. An effective parametrization of the sharing distributions is presented along with an empirical model that describes the complete shape of the distribution based on a single experimentally determinable parameter. The measured total energy sharing distributions are separated into two distributions representing the shake-off and knock-out parts by simulating the sharing distribution curves expected from a pure wave collapse after a sudden removal of the primary electron. In this way, empirical knock-out distributions are extracted and both the shake-off and knock-out distributions are parametrized. These results suggest a simple method that can be applied to other atomic and molecular systems to experimentally study important aspects of the direct double ionization process.
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Affiliation(s)
- J Andersson
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96, Gothenburg, Sweden
| | - S Zagorodskikh
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96, Gothenburg, Sweden.,Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20, Uppsala, Sweden
| | - A Hult Roos
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96, Gothenburg, Sweden
| | - O Talaee
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96, Gothenburg, Sweden.,Nano and Molecular Systems Research Unit, University of Oulu, P.O. Box 3000, FI-90014 University of Oulu, Oulu, Finland
| | - R J Squibb
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96, Gothenburg, Sweden
| | - D Koulentianos
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96, Gothenburg, Sweden.,Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005, Paris, Cedex 05, France
| | - M Wallner
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96, Gothenburg, Sweden
| | - V Zhaunerchyk
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96, Gothenburg, Sweden
| | - R Singh
- Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - J H D Eland
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96, Gothenburg, Sweden.,Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, United Kingdom
| | - J M Rost
- Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Str. 38, D-01187, Dresden, Germany
| | - R Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, 412 96, Gothenburg, Sweden.
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