A new 86 keV neutron source from the 207Pb(γ, n) reaction

R. Moreh, Y. Birenbaum, Z. Berant

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


A new monoenergetic fast neutron source En=86 keV, having an intensity of ≈105 n/s is described. The source is based on the 207Pb(γ, n) reaction where the photons are obtained from thermal neutron capture in iron. This reaction has a high cross section [σγn=(0.37±0.05) b] because of chance overlap between a γ line at Eγ=7.632 MeV of the Fe(n, γ) spectrum and level in 207Pb. It is shown that intensities of the order of ≈107 n/s may be obtained by using an enriched 207Pb target with improved geometry in conjunction with a high-flux reactor.

Original languageEnglish
Pages (from-to)429-433
Number of pages5
JournalNuclear Instruments and Methods
Issue number3
StatePublished - 1 Oct 1978

ASJC Scopus subject areas

  • Medicine (all)


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