The Experts below are selected from a list of 61014 Experts worldwide ranked by ideXlab platform
D. F. Smart - One of the best experts on this subject based on the ideXlab platform.
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Fifty Years of Cosmic Radiation Data
Space Science Reviews, 2000Co-Authors: M. A. Shea, D. F. SmartAbstract:Cosmic Radiation has been measured by a variety of techniques since 1933. This paper presents the evolution of data acquisition, processing, and availability of Cosmic Radiation data from the early years to the present time. Information on the worldwide network of neutron monitor stations and the availability of these Cosmic Radiation records is included.
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Long-Term Solar and Cosmic Radiation Data Bases
Journal of geomagnetism and geoelectricity, 1991Co-Authors: M. A. Shea, D. F. SmartAbstract:The Cosmic Radiation that reaches the earth is inversely correlated with solar activity as represented by the sunspot number. Thus one of the longest solar-terrestrial data records (solar data) has been combined with one of the shortest data records (Cosmic Radiation) to learn more about the Cosmic Radiation that reaches the earth's environment. A brief summary of solar and Cosmic Radiation data records and several interesting scientific results that have been found with these data are presented.
Josip Planinić - One of the best experts on this subject based on the ideXlab platform.
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Relation between galactic and solar Cosmic Radiation at aviation altitude
Advances in Space Research, 2008Co-Authors: M. Poje, Vanja Radolić, I. Miklavčić, Branko Vukovic, Dario Faj, Marian Varga, Josip PlaninićAbstract:Cosmic Radiation bombards us at high altitude with ionizing particles; the Radiation has a galactic component, which is normally dominant, and a component of solar origin. Cosmic ray particles are the primary source of ionization in the atmosphere above 1 km; below 1 km radon is a dominant source of ionization in many areas. The dose rate of the Cosmic Radiation was measured by the Mini 6100 semiconductor dosimeter in the ATR 42 aircraft. In the last week of October 2003, the dose rate was a factor 1.8 higher than the average of the other measurements; later we found data on the unusual solar activity in the mentioned time interval, and the short term variation of Cosmic Radiation, near solar maximum, was interpreted as a Sun flare or solar activity that was associated with a major high energy solar proton event. Relationship between solar and galactic components of the Cosmic Radiation was investigated using the empirical data of October, 2003, and the equation was derived that enabled the estimation of ratio of the solar to galactic component, with an estimated value of 9%. © 2008 COSPAR.
Wei-ru Chen - One of the best experts on this subject based on the ideXlab platform.
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Calculation of Cosmic Radiation Exposure on Flights with Computer Program
Applied Mechanics and Materials, 2013Co-Authors: Ying-jin Feng, Wei-ru Chen, Shi Feng ZhangAbstract:The computer program CARD for used to calculate Cosmic Radiation doses of aviation route is developed by CAUC. In this paper the function, structure and run principle of CARD is presented. for management of Radiation protection, according to the flight data of routes the Cosmic Radiation effective doses of every year received by the flight personnel during 2001 to 2011 were calculated with software CARD. The results obtained that calculated with CARD were compared with the data calculated using the CARI-6 and measured, respectively. The CARD results and CARI6, and measured agree within 10%.
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The Air Crew Cosmic Radiation Effective Dose Calculation Using CARD
2009 3rd International Conference on Bioinformatics and Biomedical Engineering, 2009Co-Authors: Ying-jin Feng, Wei-ru ChenAbstract:In order to monitor the Cosmic Radiation exposure level onboard aircraft in accordance with the national standard about Radiation safety, a computer system CARD has been developed using to calculate Cosmic Radiation effective dose in flight. In this paper, the principle of development, structure and function of the CARD were described. The Cosmic Radiation effective doses received by aircrews in flight on some routes were calculated using the CARD. The results were compared with the data calculated using the CARI-6 and EPCARD, both flight dose computation system were developed by FAA (USA) and GSF (Germany), respectively. The agreement between the data obtained with the CARD, CARI-6 and EPCARD is within limit recommended by ICRP.
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A Method for Calculation of Cosmic Radiation Effective Dose Rate at Civil Aviation Altitude
2008 2nd International Conference on Bioinformatics and Biomedical Engineering, 2008Co-Authors: Ying-jin Feng, Wei-ru ChenAbstract:To estimate the Cosmic Radiation exposure level at civil aviation altitude, a method applied to calculate Cosmic Radiation effective dose rate in aerosphere from altitude of 5 km to 18 km presented in this paper. The effective Radiation dose rates calculated using the method compared with results of Cosmic Radiation dose calculation system CARI-6 and EPCARD for various latitudes and longitudes, the agreement is within 15%. The numerical results of Radiation dose rates at specifically locations in atmosphere by using the method are exact in the limit of ICRP 60.
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A simple method for estimating Cosmic Radiation effective dose rate
Hang tian yi xue yu yi xue gong cheng = Space medicine & medical engineering, 2004Co-Authors: Ying-jin Feng, Wei-ru ChenAbstract:Objective To study a simple method for estimating Cosmic Radiation effective dose rate for aircrew. Method Using a new program by written in Object Pascal language on PC in windows operation system on the basis of an algorithm designed in this paper, Cosmic Radiation effective dose rates at various altitudes and latitudes were calculated and compared with those obtained by using CARI-6 and FLUKA. Result The calculated results by using the simple method agree remarkably with those calculated by using CARI-6 and FLUKA, in three groups of data compared with CARI-6, differences are within 25% for 76%, 71% and 100% of the data respectively; in the group of data compared with FLUKA, differences are all within 20%. Conclusion The simple method is applicable in estimating Cosmic Radiation effective dose rate for flight altitude of 7 000 m to 20 000 m.
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Estimated Cosmic Radiation doses for flight personnel
Hang tian yi xue yu yi xue gong cheng = Space medicine & medical engineering, 2002Co-Authors: Ying-jin Feng, Wei-ru Chen, Tian-ping Sun, Shi-ying Duan, Bao-shan Jia, Hai-li ZhangAbstract:Objective. To calculate individual annual Cosmic Radiation effective dose for monitored flight personnel. Method. With the help of aircraft flight information from flight performance manual, software CARI-6 developed by U.S. Federal Aviation Administration was used to calculate the effective dose of galactic Cosmic Radiation along the air lines, and to calculate the effective dose rate on the ground in Urumuqi, then individual annual Cosmic Radiation dose on flight personnel was estimated from the data calculated by CARI-6. Result. The annual Cosmic Radiation dose on the ground at Urumuqi was 0.420 mSv a-1. The average effective dose rate of all flights of Xinjiang Airlines from 1997 to 1999 was 2.381 microSv h -1(0.33-3. 64 microSv h-1). Average annual Cosmic Radiation dose on flight personnel was 2.193 mSv a-1 (0.887-4.419 mSv a-1). Conclusion. Annual individual doses of all monitored flight personnel are well below the limit 20 mSv a-1 recommended by International Commission on Radiological Protection (ICRP).
M. A. Shea - One of the best experts on this subject based on the ideXlab platform.
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Fifty Years of Cosmic Radiation Data
Space Science Reviews, 2000Co-Authors: M. A. Shea, D. F. SmartAbstract:Cosmic Radiation has been measured by a variety of techniques since 1933. This paper presents the evolution of data acquisition, processing, and availability of Cosmic Radiation data from the early years to the present time. Information on the worldwide network of neutron monitor stations and the availability of these Cosmic Radiation records is included.
-
Long-Term Solar and Cosmic Radiation Data Bases
Journal of geomagnetism and geoelectricity, 1991Co-Authors: M. A. Shea, D. F. SmartAbstract:The Cosmic Radiation that reaches the earth is inversely correlated with solar activity as represented by the sunspot number. Thus one of the longest solar-terrestrial data records (solar data) has been combined with one of the shortest data records (Cosmic Radiation) to learn more about the Cosmic Radiation that reaches the earth's environment. A brief summary of solar and Cosmic Radiation data records and several interesting scientific results that have been found with these data are presented.
M. Poje - One of the best experts on this subject based on the ideXlab platform.
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Relation between galactic and solar Cosmic Radiation at aviation altitude
Advances in Space Research, 2008Co-Authors: M. Poje, Vanja Radolić, I. Miklavčić, Branko Vukovic, Dario Faj, Marian Varga, Josip PlaninićAbstract:Cosmic Radiation bombards us at high altitude with ionizing particles; the Radiation has a galactic component, which is normally dominant, and a component of solar origin. Cosmic ray particles are the primary source of ionization in the atmosphere above 1 km; below 1 km radon is a dominant source of ionization in many areas. The dose rate of the Cosmic Radiation was measured by the Mini 6100 semiconductor dosimeter in the ATR 42 aircraft. In the last week of October 2003, the dose rate was a factor 1.8 higher than the average of the other measurements; later we found data on the unusual solar activity in the mentioned time interval, and the short term variation of Cosmic Radiation, near solar maximum, was interpreted as a Sun flare or solar activity that was associated with a major high energy solar proton event. Relationship between solar and galactic components of the Cosmic Radiation was investigated using the empirical data of October, 2003, and the equation was derived that enabled the estimation of ratio of the solar to galactic component, with an estimated value of 9%. © 2008 COSPAR.
