A Theoretical Study of Anomalous Projectile Fragments Produced in Relativistic Heavy Ion Interactions PDF Download
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Author: Scott Herbert Fricke
Publisher:
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Category :
Languages : en
Pages : 278
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Author: Scott Herbert Fricke
Publisher:
ISBN:
Category :
Languages : en
Pages : 278
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Author:
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Category : Astronautics
Languages : en
Pages : 632
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Category :
Languages : en
Pages :
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Two independent emulsion experiments using Bevalac beams of 16O and 56Fe at H" GeV/nucleon find with> 99.7% confidence that the reaction mean-free paths of projectile fragments, 3 H" Z H" 26, are shorter for a few centimeters after their emission than at larger distances, or than predicted from experiments on beam nuclei. This effect, which is enhanced in later generations of fragments, can be interpreted by the relatively rare occurrence of fragments that interact with an unexpectedly large cross section.
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Category : Extraterrestrial radiation
Languages : en
Pages : 624
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Author: Charles E. Swenberg
Publisher: Springer Science & Business Media
ISBN: 1461529166
Category : Science
Languages : en
Pages : 938
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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.
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Category :
Languages : en
Pages :
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From an analysis of 1460 projectile fragment collisions in nuclear research emulsion exposed to 2.1 A GeV 16O and 1.9 A GeV 56Fe at the Bevalac, evidence is presented for the existence of an anomalously short interaction mean free path of projectile fragments for the first several cm after emission. The result is significant to beyond the 3 standard deviation confidence level.
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Category : Power resources
Languages : en
Pages : 782
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Author:
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ISBN:
Category :
Languages : en
Pages : 91
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We present in detail the description and the analysis of two independent experiments using Bevalac beams of 16O and 56Fe. From their results it is concluded that the reaction mean free paths of relativistic projectile fragments, 3 ≤ Z ≤ 26, are shorter for a few centimeters after emission than at large distances where they are compatible with values predicted from experiments on beam nuclei. The probability that this effect is due to a statistical fluctuation is
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Category : Dissertation abstracts
Languages : en
Pages : 696
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Author: John W. Wilson
Publisher:
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Category :
Languages : en
Pages : 624
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