Nuclear Energy Levels Excited by Fast Neutrons

Fast-neutron inelastic scattering has been studied in a number of elements by observation of the deexcitation gamma rays with a single-crystal NaI(Tl) spectrometer. Neutrons of energy 4.4 plus or minus 0.1 Mev were used to bombard isotopically enriched scatterers of Ti, Cr, Ni, Zn, Ge, and W, and no...

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Veröffentlicht in:	Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, 1957-09, Vol.107 (5), p.1306-1310
1. Verfasser:	Sinclair, Rolf M.
Format:	Artikel
Sprache:	eng
Schlagworte:	CHLORINE CHROMIUM 50 CHROMIUM ISOTOPES CRYSTALS EFFICIENCY ENERGY ENERGY LEVELS ENERGY RANGE ENRICHMENT EXCITATION FAST NEUTRONS GADOLINIUM GAMMA RADIATION GAMMA SPECTROMETERS GERMANIUM 74 GERMANIUM ISOTOPES INELASTIC SCATTERING IODINE MEASURED VALUES MEV RANGE NEODYMIUM NICKEL ISOTOPES NIOBIUM PHYSICS SAMARIUM SCATTERING SODIUM IODIDES STRONTIUM TITANIUM 47 TITANIUM 48 TITANIUM ISOTOPES TUNGSTEN ISOTOPES ZINC 64 ZINC 66 ZINC ISOTOPES
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Zusammenfassung:	Fast-neutron inelastic scattering has been studied in a number of elements by observation of the deexcitation gamma rays with a single-crystal NaI(Tl) spectrometer. Neutrons of energy 4.4 plus or minus 0.1 Mev were used to bombard isotopically enriched scatterers of Ti, Cr, Ni, Zn, Ge, and W, and normal scatterers of Cl, Sr, Nb, Nd, Sm, and Gd. The low-lying levels in Ti/sup 47/, I, and W are studied using neutron energies between 0.50 Mev and 1.45 Mev. Energies and relative yields of the gamma rays are given, and their assignment to various excited states is discussed. Previ-ously unknown states were found in Ti/ sup 48/, Cr/sup 50/, Zn/sup 64/, Zn/sup 66 and Ge/sup 74/. (auth)
ISSN:	0031-899X
DOI:	10.1103/PhysRev.107.1306