Neutron Spectrum and Absolute Yield of a Plutonium-Beryllium Source

Stewart, L.

doi:10.1103/physrev.98.740

Cited by 66 publications

(21 citation statements)

References 15 publications

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“…This conversion was repeated for all energy-dependent neutron source plots in this section (i.e., Figs. 8,11,14,16,18,and 20). The total neutron source magnitude calculated by SOURCES 4A was 2.69x105 neutrons/s-cm3, whereas the experimenters reported a total neutron source rate of 2.28x105 neutrons/s-cm3.…”

Section: E Executionmentioning

confidence: 99%

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SOURCES 4A: A Code for Calculating (alpha,n), Spontaneous Fission, and Delayed Neutron Sources and Spectra

Madland¹,

Arthur²,

Estes³

et al. 1999

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Section: E Executionmentioning

confidence: 99%

“…(14). The branching fraction of et-particles at E~reacting with target nuclide i and producing product level m is P Thus, the fraction of et-particles at E. reacting with target nuclide i and resulting in product level m reactions occurring in et-particle energy group g is simply the product of Eq.…”

mentioning

confidence: 99%

SOURCES 4A: A Code for Calculating (alpha,n), Spontaneous Fission, and Delayed Neutron Sources and Spectra

Madland¹,

Arthur²,

Estes³

et al. 1999

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“…a beta Ge-Li Ge-Li beta, Ge-Li assuming the neutron spectrum shape measured by STEWAnT [4] and using the appropriate excitation functions for the reactions [5]. Calculated cross sections were systematically higher than the experimental values above 2 MeV and smaller in the low-energy region.…”

Section: -T-_28mentioning

confidence: 99%

Average cross sections for Pu-α-Be neutrons: Low-energy neutrons from α-n sources

et al. 1973

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Average activation cross sections for a number of elements were determined using unmoderated neutrons from Pu-Be and Po-Be sources. Applying threshold detectors it was found that 10% of Pu-Be neutrons are emitted in the energy interval 10--100 keV. Neutron spectra from Pu-Be13 sources of different dimensions were the same within the interval 0.5--5 Ci; the majority of neutrons below 2 MeV carne from the multibody break-up of 13C.

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“…протонам отдачи, в эмульсии. Он нашёл 44 , что источник даёт в секунду 1,2· 10 6 нейтронов, энергия которых прев ышает 0,5 Мэв, т. е. на 1 мг. плутония приходится около 100 нейтронов.…”

Section: (4)unclassified