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A Note On The Galactic Radiation Exposure In Geomagnetically Unprotected Regions Of Space
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Book Synopsis A Note on the Galactic Radiation Exposure in Geomagnetically Unprotected Regions of Space by : Hermann J. Schaefer
Download or read book A Note on the Galactic Radiation Exposure in Geomagnetically Unprotected Regions of Space written by Hermann J. Schaefer and published by . This book was released on 1966 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of the galactic flux at low rigidities during the Years of the Quiet Sun 1964-65 indicate that the galactic radiation is still modulated at solar minimum with the differential flux at low rigidities strongly depressed. Thus it is assumed that, in space systems of low shielding, no exceptionally large skin doses in a human target will result. This is quite different from that occurring from trapped radiation and solar particle beams. A conservative estimate for the total dose from galactic radiation at solar minimum including secondaries for 2pi incidence is 50 millirads/24 hours with 5 to 8 per cent of this dose produced by high LET components. If life shortening is used as criterion for long-term effects, the quoted exposure corresponds to a factor of 0.2 in the sense that 100 days of exposure would shorten the residual life span by 20 days. (Author).
Book Synopsis A Note on the Galactic Radiation Exposure in Geomagnetically Unprotected Regions of Space by : Hermann J. Schaefer
Download or read book A Note on the Galactic Radiation Exposure in Geomagnetically Unprotected Regions of Space written by Hermann J. Schaefer and published by . This book was released on 1966 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of the galactic flux at low rigidities during the Years of the Quiet Sun 1964-65 indicate that the galactic radiation is still modulated at solar minimum with the differential flux at low rigidities strongly depressed. Thus it is assumed that, in space systems of low shielding, no exceptionally large skin doses in a human target will result. This is quite different from that occurring from trapped radiation and solar particle beams. A conservative estimate for the total dose from galactic radiation at solar minimum including secondaries for 2pi incidence is 50 millirads/24 hours with 5 to 8 per cent of this dose produced by high LET components. If life shortening is used as criterion for long-term effects, the quoted exposure corresponds to a factor of 0.2 in the sense that 100 days of exposure would shorten the residual life span by 20 days. (Author).
Author :Leonty Miroshnichenko Publisher :Springer Science & Business Media ISBN 13 :9781402015380 Total Pages :258 pages Book Rating :4.0/5 (153 download)
Book Synopsis Radiation Hazard in Space by : Leonty Miroshnichenko
Download or read book Radiation Hazard in Space written by Leonty Miroshnichenko and published by Springer Science & Business Media. This book was released on 2003-10-31 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: The mono graph contains 8 chapters, and their contents cover all principal aspects of the problem: 1. Introduction and brief his tory ofthe radiation problem and background information ofradiation hazard in the near-Earth and interplanetary space. 2. General description of radiation conditions and main sources of charged partic1es in the Earth's environment and interplanetary space, effects of space environment on spacecraft. 3. Basic information about physical conditions in space and main sources of charged particles in the Earth's environment and interplanetary space, in the context of "Space W eather" monitoring and prediction. 4. Trapped radiation belts of the Earth (ERB): theory of their origin, spatial and temporal dynamics, and experimental and statistical models. 5. Galactic cosmic rays (GCR): variations of energetic, temporal and spatial characteristics, long-term modulation, and anomalous cosmic ray (ACR) component, modeling oftheir dynamics. 6. Production of energetic particles (SEPs) at/ne ar the Sun: available databases, acceleration, propagation, and prediction of individual SEP event, statistical models of solar cosmic rays (SCR). 7. Existing empirical techniques of estimating, prediction and modeling of radiation hazard, methodical approaches and constraints, some questions of changes in the Earth's radiation environment due to changes of the solar activity level. 8. Unresolved problems of radiation hazard prediction and spacecraft protection, radiation experiments on board the spacecraft, estimating of radiation conditions during interplanetary missions. Space does not allow us to explain every time the solar-terrestrial and radiation physics nomencIature used in current English-language literature.
Book Synopsis Government-wide Index to Federal Research & Development Reports by :
Download or read book Government-wide Index to Federal Research & Development Reports written by and published by . This book was released on 1967-05 with total page 1470 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cumulated Index Medicus written by and published by . This book was released on 1967 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biological Effects and Physics of Solar and Galactic Cosmic Radiation Part B by : Charles E. Swenberg
Download or read book Biological Effects and Physics of Solar and Galactic Cosmic Radiation Part B written by Charles E. Swenberg and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 938 pages. Available in PDF, EPUB and Kindle. Book excerpt: Space missions subject human beings or any other target of a spacecraft to a radiation environment of an intensity and composition not available on earth. Whereas for missions in low earth orbit (LEO), such as those using the Space Shuttle or Space Station scenario, radiation exposure guidelines have been developed and have been adopted by spacefaring agencies, for exploratory class missions that will take the space travellers outside the protective confines of the geomagnetic field sufficient guidelines for radiation protection are still outstanding. For a piloted Mars mission, the whole concept of radiation protection needs to be reconsidered. Since there is an increasing interest of many nations and space agencies in establishing a lunar base and lor exploring Mars by manned missions, it is both, timely and important to develop appropriate risk estimates and radiation protection guidelines which will have an influence on the design and structure of space vehicles and habitation areas of the extraterrestrial settlements. This book is the result of a multidisciplinary effort to assess the state of art in our knowledge on the radiation situation during deep space missions and on the impact of this complex radiation environment on the space traveller. It comprises the lectures by the faculty members as well as short contributions by the students given at the NATO Advanced Study Institute "Biological Effects and Physics of Solar and Galactic Cosmic Radiation" held in Armacao de Pera, Portugal, 12-23 October, 1991.
Download or read book NASA Technical Note written by and published by . This book was released on 1974 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1967-11 with total page 874 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1967 with total page 1582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Protection Against Space Radiation by : Arthur Reetz
Download or read book Protection Against Space Radiation written by Arthur Reetz and published by . This book was released on 1968 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measured and Calculated Neutron Spectra and Dose Equivalent Rates at High Altitudes by : Trutz Foelsche
Download or read book Measured and Calculated Neutron Spectra and Dose Equivalent Rates at High Altitudes written by Trutz Foelsche and published by . This book was released on 1974 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of the NASA Langley-New York University high-altitude radiation study are presented.
Download or read book Il Nuovo cimento written by and published by . This book was released on 1969 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Linear Energy Transfer Spectra and Dose Equivalents of Galactic Radiation Exposure in Space by : Hermann J. Schaefer
Download or read book Linear Energy Transfer Spectra and Dose Equivalents of Galactic Radiation Exposure in Space written by Hermann J. Schaefer and published by . This book was released on 1966 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: In assessing the astronaut's exposure from galactic cosmic rays on space missions of long duration conversion of absorbed doses to dose equivalents is required. Since a large part of the dose contribution from heavy primaries is produced at Linear Energy Transfer (LET) values beyond the range for which radiobiological data are available, it seems preferable to analyze the LET distributions themselves and to compare them to standard x-rays rather than to assume arbitrary values for the Relative Biological Effectiveness(RBE). The local LET distributions in tissue are found to be extremely skewed, with a large maximum at the relativistic minimum LET. Lined up on the LET scale, they cover the very wide interval from 0.18 to 2790 kev/micron T as compared to an interval from 0.4 to 35 kev/micron T for standard x-rays. Applying the RBE formula of the RBE Committee of the ICRP and a saturation value of 10 leads to a grand mean RBE of 1.82 for the total absorbed dose of 13 millirads/24 hours from primaries. (Author).
Book Synopsis Reports by : Naval School of Aviation Medicine (U.S.)
Download or read book Reports written by Naval School of Aviation Medicine (U.S.) and published by . This book was released on with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Literature Search by : National Library of Medicine (U.S.)
Download or read book Literature Search written by National Library of Medicine (U.S.) and published by . This book was released on 1967 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis NASA Contractor Report by : United States. National Aeronautics and Space Administration
Download or read book NASA Contractor Report written by United States. National Aeronautics and Space Administration and published by . This book was released on 1968 with total page 1064 pages. Available in PDF, EPUB and Kindle. Book excerpt:
