Simultaneous determination of fast-neutron spectra by time-of-flight and pulse-height unfolding techniques

Straker, E.A.; Burgart, C.E.; Love, T.A.; Freestone, R.M.

doi:10.1016/0029-554x(71)90282-5

Cited by 8 publications

(1 citation statement)

References 5 publications

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“…• unfolded using the program FERD (7) and measured gamma-ray response functions for this spectrometer. The neutron energy intervals were chosen to be 150 keV wide from 850 keV to 1 MeV, 500 keV wide from l MeV to 10 MeV, l' MeV wide from 10 MeV to 15 MeV,.and 2.5 MeV wide from 15 MeV to 20 MeV. This method gave gamma-ray spectra containing 124 points each over the energy range 700 keV ~ E ~ 10.6 MeV.…”

Section: Data Reduction and Resultsmentioning

confidence: 99%

Re-measurement of the neutron-induced gamma-ray production cross sections for iron in the energy range 850 keV less than or equal to E/sub n/ less than or equal to 20. 0 MeV. [Tables]

Chapman¹,

Morgan²,

Perey³

1976

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Values of the gamma-ray production cross sections for neutron interactions with iron as reported by previous investigators have differed by as much as a factor of 1.5 or more at neutron energies greater than about 5 MeV. Because of this discrepancy, the measurements have been repeated •at ORNL using the ORELA as a pulsed source of neutrons with energies between 850 keV and 20 MeV. The data were obtained using a NaI(Tl) gamma-ray spectrometer oriented at an angle of 125 degrees to the incident neutron beam. The sample was positioned in the beam at a distance of 47.35 meters from the neutron source. The resulting data,• presented as differential cross sections (d 2 a/dndE) for gamma rays between 0.7 and 10.5 MeV, show good agreement with some previously published data, but are significantly different from previous ORNL measurements for neutron energies greater than 5 MeV.

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Section: Data Reduction and Resultsmentioning

confidence: 99%