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Levels of $sup 56$Fe excited by the (p,p'$gamma$) and (n,n'$gamma$) reactions (in French)

Journal Article · · Nucl. Phys., A, v. A222, no. 2, pp. 333-364
OSTI ID:4307170
; ; ;
The energy levels of /sup 56/Fe were studied by means of the (p,p' gamma ) and (n;n' gamma ) reactions. Particle --gamma coincidences from the /sup 56/ Fe(p p' gamma ) reaction were measured at 6.5, 8, 10, and 11 MeV incident proton energies. The coincident gamma rays were detected with a 100-cm/sup 3/ Ge(Li) detector, and protons, with cooled Si(Li) diodes. Independently, absolute differential cross sections for the production of gamma rays by inelastic neutron scattering from iron were measured in the energy range 4.8 to 8.8 MeV. A 65-cm/sup 3/ Ge(Li) detector surrounded by a NaI(Tl) annulus and associated with a pulsed-beam time-of-flight system was used to detect the de-excitation gamma rays. By comparing the measured angular distributions and excitation iunctions with those calculated on the basis of the statistical theory, spin assignments for poorly known states were made. From these two experiments, a decay scheme was constructed and proposed. The results are briefly compared with mixed- configuration shell-model calculations. (auth)
Research Organization:
Centre d'Etudes, Bruyeres-le-Chatel, France
NSA Number:
NSA-29-030757
OSTI ID:
4307170
Journal Information:
Nucl. Phys., A, v. A222, no. 2, pp. 333-364, Journal Name: Nucl. Phys., A, v. A222, no. 2, pp. 333-364; ISSN NUPAB
Country of Publication:
Country unknown/Code not available
Language:
French

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Related Subjects

ANGULAR DISTRIBUTION-- DIFFERENTIAL CROSS SECTIONS-- EXCITATION FUNCTIONS-- FAST NEUTRONS-- GAMMA RADIATION-- GAMMA SPECTRA-- INELASTIC SCATTERING-- MEV RANGE 01-10-- NEUTRON REACTIONS-- PROTON SPECTRA
BRANCHING RATIO-- ENERGY LEVELS-- ENERGY-LEVEL TRANSITIONS-- PARITY-- SHELL MODELS-- SPIN
COINCIDENCE METHODS-- GAMMA RADIATION-- GAMMA SPECTRA-- INELASTIC SCATTERING-- MEV RANGE 01-10-- MEV RANGE 10-100-- PROTON REACTIONS-- PROTON SPECTRA-- PROTONS
N68531 --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
39 <= A <= 58--Energy Levels & Transitions
N68551* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
39 <= A <= 58--Nuclear Reactions & Scattering