Neutron Production by Medium-energy Protons on Heavy Metal Targets
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Page : 66 pages
File Size : 17,73 MB
Release : 1979
Category : Neutrons
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Author :
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Page : 66 pages
File Size : 17,73 MB
Release : 1979
Category : Neutrons
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Page : pages
File Size : 17,85 MB
Release : 1972
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Author : William J. Knox
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Page : 30 pages
File Size : 26,82 MB
Release : 1950
Category : Bismuth
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Relative neutron yields in the forward direction from various target elements bombarded with 350 Mev protons and 190 Mev deuterons have been measured. Bismuth fission chambers with a threshold of about 50 Mev were used to detect the high energy neutrons. The actual flux of protons or deuterons traversing each target was determined from the activities induced in graphite monitors attached to the target. When a deuteron beam is used, the neutron yields for light elements agree with the values predicted by the deuteron stripping theory. For the heavy elements the observed values are fitted best by adding a function proportional to Z-sq to the stripping theory values. This may be interpreted as evidence for the production of high energy neutrons by the electric field disintegration of the deuteron. The neutron yields from the proton beam vary approximately as (A - Z)(exp(2/3)) for target elements from C to U. This indicates that the heavy elements are not completely transparent to 350 Mev protons. Beryllium has an anomalous neutron yield 50% higher than that for C. Calculations and measurements on the problem of multiple traversals of beam particles through thin targets are presented.
Author : Lawrence Livermore Laboratory
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Page : 28 pages
File Size : 27,4 MB
Release : 1979
Category : Ion bombardment
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Page : 612 pages
File Size : 28,64 MB
Release : 1976
Category : Nuclear energy
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Page : 536 pages
File Size : 39,56 MB
Release : 1981
Category : Radioactive waste disposal
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Author : Lawrence Livermore Laboratory
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Page : 28 pages
File Size : 31,96 MB
Release : 1979
Category : Ion bombardment
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Author : T. Nejat Veziroğlu
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Page : 646 pages
File Size : 39,70 MB
Release : 1978
Category : Renewable energy sources
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Author : Turhan Nejat Veziroğlu
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Page : 648 pages
File Size : 49,73 MB
Release : 1978
Category : Renewable energy sources
ISBN : 9780070792005
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Page : 508 pages
File Size : 48,75 MB
Release : 1994-12
Category : Power resources
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