RATIO OF NEUTRON ABSORPTION CROSS-SECTIONS OF BORON AND HYDROGEN
1947 ◽
Vol 25a
(4)
◽
pp. 261-275
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Keyword(s):
Using a Ra-α-Be source and a small boron trifluoride chamber as detector, the ratio of the neutron absorption cross-sections of boron and hydrogen, σB/σH, has been measured by the integration method in water and in aqueous solutions of boric acid. The result is[Formula: see text]with a statistical error of ±30. Subsidiary experiments have been made which fix at about 3% the upper limit of the systematic error caused by perturbation of the neutron density in the neighbourhood of the ionization chamber.
1986 ◽
Vol 13
(11)
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pp. 627-628
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1961 ◽
Vol 9
(1)
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pp. 99-100
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Keyword(s):
1953 ◽
Vol 66
(8)
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pp. 700-704
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Keyword(s):