International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements最新文献_第6页

Dose rate, dose-equivalent rate, and quality factor in SLS-1 SLS-1的剂量率、剂量当量率和质量因子

International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements Pub Date : 1992-07-01 Epub Date: 2002-10-09 DOI: 10.1016/1359-0189(92)90030-Y

Gautam D. Badhwar , Leslie A. Braby , Frank A. Cucinotta , William Atwell

{"title":"Dose rate, dose-equivalent rate, and quality factor in SLS-1","authors":"Gautam D. Badhwar , Leslie A. Braby , Frank A. Cucinotta , William Atwell","doi":"10.1016/1359-0189(92)90030-Y","DOIUrl":"https://doi.org/10.1016/1359-0189(92)90030-Y","url":null,"abstract":"<div><p>A tissue-equivalent proportional counter (TEPC) sensitive to the lineal energy range of 0.26–300 keV μm<sup>-1</sup> was flown on STS-40 (39° × 278 km × 296 km) inside the Spacelab. This instrument was previously flown on STS-31 but was modified to provide a finer resolution at lower lineal energies to better map the South Atlantic Anomaly (SAA) protons. The instrument was turned on 6 June 1991, and operated for 7470 min (124.5h).The flight duration was characterized by a very large number of X-ray solar flares and enhanced magnetic field fluctuations; however, no significant dose from the solar particles was measured at the location of this instrument. The flight data can be separated into trapped and galactic cosmic radiation parts. The dose rate, dose-equivalent rate and quality factor for trapped radiation were 4.21 ± 0.03 mrad day<sup>−1</sup>, 7.72±0.05 mrem day<sup>−1</sup>, and 1.83±0.1, respectively. The dose rate, dose-equivalent rate, and quality factor for galactic cosmic radiation were 5.34±0.03 mrad day<sup>−1</sup> 14.63±0.06 mrem day<sup>−1</sup>, and 2.74±0.1, respectively. The overall quality factor for the flight was 2.38. The dose from the GCR is higher than from SAA protons because of the high inclination and low altitude of this flight. The AP8MAX model of the trapped radiation gives a dose rate of 2.43 mrad day<sup>−1</sup> and a quality factor of 1.77. The CREME solar maximum model of galactic cosmic radiation gives a dose rate of 2.54 mrad day<sup>−1</sup> and a quality factor of 2.91. Thus the AP8MAX model underestimates the dose by a factor of 1.8 whereas the CREME model leads to an underestimation of the dose by a factor of 2. A comparison of the LET spectra using the AP8MAX model and galactic cosmic radiation transport codes shows only a qualitative agreement.</p></div>","PeriodicalId":81549,"journal":{"name":"International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements","volume":"20 3","pages":"Pages 447-451"},"PeriodicalIF":0.0,"publicationDate":"1992-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/1359-0189(92)90030-Y","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71784132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Registration properties of different types of CR-39 in vacuum conditions of irradiation 不同型号CR-39在真空辐照条件下的配准性能

International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements Pub Date : 1992-07-01 Epub Date: 2002-10-09 DOI: 10.1016/1359-0189(92)90040-3

A.N. Golovchenko, S.P. Tretyakova

引用次数: 6

Determination of radon exhalation rates from Canadian building materials with an internal proportional counter 用内部比例计数器测定加拿大建筑材料的氡排放率

International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements Pub Date : 1992-07-01 Epub Date: 2002-10-09 DOI: 10.1016/1359-0189(92)90041-S

Lubomir Zikovsky

引用次数: 7

Determination of radon exhalation rates from Canadian building materials with an internal proportional counter 用内部比例计数器测定加拿大建筑材料的氡排放率

International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements Pub Date : 1992-07-01 DOI: 10.1016/1359-0189(92)90041-S

L. Zikovsky

引用次数: 7

Iron fluxes from Ariel-6 workshop ICRC, Dublin, August 1991 1991年8月，红十字国际委员会，都柏林，Ariel-6车间的铁助剂

International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements Pub Date : 1992-07-01 Epub Date: 2002-10-09 DOI: 10.1016/1359-0189(92)90027-S

P.H. Fowler, M.R.W. Masheder, R.N.F. Walker, A. Worley

引用次数: 2

An improved model of galactic cosmic radiation for space exploration missions 用于空间探索任务的改进的星系宇宙辐射模型

International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements Pub Date : 1992-07-01 Epub Date: 2002-10-09 DOI: 10.1016/1359-0189(92)90024-P

G.D. Badhwar, P.M. O'Neill

{"title":"An improved model of galactic cosmic radiation for space exploration missions","authors":"G.D. Badhwar, P.M. O'Neill","doi":"10.1016/1359-0189(92)90024-P","DOIUrl":"https://doi.org/10.1016/1359-0189(92)90024-P","url":null,"abstract":"<div><p>The need for an accurate model that describes the galactic cosmic radiation, GCR, environment is becoming increasingly important in light of planned space exploration missions. There is concern about the effects of heavy ions on crew health and electronic components. Recent studies have indicated that H, He, C, O, Ne, Mg, Si and Fe nuclei contribute about 80% of the radiation dose-equivalent under realistic shielding conditions. Small uncertainties in the absolute differential flux of these particles lead to large uncertainties in the amount of shielding mass needed for crew radiation protection. The absolute flux and the associated errors have received less attention than charge composition measurements. The Naval Research Laboratory (Adams, 1986) developed a comprehensive model, called the CREME model, that summarized the then-existing GCR data in terms of empirical fits. This model has been used for GCR intensities for shielding and single event upset studies. The main weakness of this model lies in its simple treatment of the solar modulation. In this paper we describe the results of a systematic study of existing data from 1965 to 1990 to derive a more accurate GCR environment model. We have fitted the hydrogen, helium, and iron spectra from 1965 to 1990, and have shown that a consistent set of local interstellar spectra and solar modulation parameters can be developed that applies to all species. A thorough analysis of uncertainties shows that the model spectra can be defined to an absolute accuracy of ±10%. A reference spectrum at solar minimum, which will be the limiting GCR spectrum for exploratory class missions, has been defined.</p></div>","PeriodicalId":81549,"journal":{"name":"International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements","volume":"20 3","pages":"Pages 403-410"},"PeriodicalIF":0.0,"publicationDate":"1992-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/1359-0189(92)90024-P","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71784128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 137

Sensitivity study of CR-39 plastic track detectors CR-39塑料轨迹探测器的灵敏度研究

International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements Pub Date : 1992-07-01 Epub Date: 2002-10-09 DOI: 10.1016/1359-0189(92)90035-T

Y.D. He, P.B. Price

引用次数: 8

A new method for internal calibration of nuclear track detectors 核径迹探测器内部标定的新方法

International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements Pub Date : 1992-07-01 Epub Date: 2002-10-09 DOI: 10.1016/1359-0189(92)90037-V

K. Oda , I. Csige , R.P. Henke, E.V. Benton

引用次数: 22

On registration properties of intercast company CR-39 论联营公司CR-39的注册性质

International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements Pub Date : 1992-07-01 Epub Date: 2002-10-09 DOI: 10.1016/1359-0189(92)90039-X

A.N. Golovchenko

引用次数: 3

A measurement of the absolute energy spectra of galactic cosmic rays during the 1976–77 solar minimum 1976-77年太阳活动极小期银河宇宙射线绝对能谱的测量

International Journal Of Radiation Applications And Instrumentation. Part D, Nuclear Tracks And Radiation Measurements Pub Date : 1992-07-01 DOI: 10.1016/1359-0189(92)90026-R

J. Derrickson, T. Parnell, R. W. Austin, W. J. Selig, J. Gregory

引用次数: 3