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Sylvian Kahane

Publications and source records attributed to Sylvian Kahane.

5 recordsLinked to original sources
arXiv2023

Photonuclear reaction in ${67}^$Zn

Mono-energetic $γ$-beams ($\Delata \approx$ 10 eV) based on thermal neutron capture, in a nuclear reactor, using the Mn(n, $γ$) reaction were utilized for generating a fast neutron source from Zinc, via the ${67}^Zn(γ, n)$ reaction. One of the incident $γ$-lines of the Mn source at $E_γ$ = 7244 keV, photoexcites by chance a resonance level in ${67}^$Zn, with subsequent emission of neutrons at an energy of 191 keV. The cross-section for this process was measured and found to be $σ(γ, n)$ = 252 $\pm$ 41 mb with an intensity of the order of 104 n/s. The angular distribution of the 191 keV neutron group was also measured.

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arXiv2022

Dynamic neutron sources from the $^{207}$Pb($γ$,n) and $^{205}$Tl($γ$,n) reactions

Mono-energetic gamma-beams ($Δ\sim 10$ eV) based on thermal neutron capture, in a nuclear reactor, using the V(n, $γ$) and Fe(n,$γ$) reactions, were utilized for generating fast neutron sources from lead and thallium respectively, via the $^{207}$Pb($γ$,n) and $^{205}$Tl($γ$,n) reactions. It so happened that one of the incident gamma-lines of the V source, E$_γ$ = 7163 keV, photoexcites by chance a resonance level in $^{207}$Pb, which emits neutrons at an energy of 423 keV. In a similar manner, the incident $γ$-line at E$_γ$ = 7646 keV of the Fe(n, $γ$) source photoexcites by chance a resonance level in the $^{205}$Tl isotope, which emits neutrons at an energy of 99 keV. The cross-sections for the neutron emission process were measured and found to be $σ$($γ$,n) = 35+/-6 mb and 107+/-17 mb respectively with intensities of the order of $10^4$ n/sec.

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arXiv2022

Backscattering of MeV Electrons. An Analysis of Tabata's Experiment with Geant4

A series of simulations were conducted with Geant4 in order to verify the electron backscattering experiments performed by Tabata in the low Z elements of Be, C, and Al. In general, quite good agreement was obtained by carefully choosing the physics lists employed. These results invalidate the claim made before about the presence of experimental errors in the above work.

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arXiv2002

Elastic and Raman scattering of 9.0 and 11.4 MeV photons from Au, Dy and In

Monoenergetic photons between 8.8 and 11.4 MeV were scattered elastically and in elastically (Raman) from natural targets of Au, Dy and In.15 new cross sections were measured. Evidence is presented for a slight deformation in the 197Au nucleus, generally believed to be spherical. It is predicted, on the basis of these measurements, that the Giant Dipole Resonance of Dy is very similar to that of 160Gd. A narrow isolated resonance at 9.0 MeV is observed in In.

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