Measurement of the nuclear level density at high spins

The neutron spectrum from the reaction /sup 92/Zr(/sup 64/Ni, 1n)/sup 155/Er has been measured at an average spin of 52h-dash-bar and for excitation energies between 30 and 36 MeV in /sup 155/Er. Channel and spin selection have been obtained from the Darmstadt-Heidelberg crystal ball. The level dens...

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Veröffentlicht in:	Phys. Rev. Lett.; (United States) 1988-01, Vol.60 (1), p.11-13
Hauptverfasser:	Henss, S, Ruckelshausen, A, Fischer, RD, Kühn, W, Metag, V, V, Novotny, R, Janssens, RV, Khoo, TL, Habs, D, Schwalm, D, Freeman, D, Duchène, G, Haas, B, Haas, F, Hlavac, S, Simon, RS
Format:	Artikel
Sprache:	eng
Schlagworte:	651720 > Nuclear Properties & Reactions, A=90-149, Experimental BARYONS CHARGED-PARTICLE REACTIONS DATA ELEMENTARY PARTICLES ENERGY LEVELS ENERGY RANGE ENERGY-LEVEL DENSITY ERBIUM 155 ERBIUM ISOTOPES EVEN-ODD NUCLEI EXPERIMENTAL DATA FERMI GAS MODEL FERMIONS HADRONS HEAVY ION FUSION REACTIONS HEAVY ION REACTIONS HIGH SPIN STATES INFORMATION INTERMEDIATE MASS NUCLEI ISOTOPES MATHEMATICAL MODELS MEV RANGE MEV RANGE 100-1000 NEUTRON SPECTRA NEUTRONS NICKEL 64 REACTIONS Nuclear Experiment NUCLEAR MODELS NUCLEAR PHYSICS AND RADIATION PHYSICS NUCLEAR REACTIONS NUCLEI NUCLEONS NUMERICAL DATA Physics RARE EARTH ISOTOPES RARE EARTH NUCLEI SPECTRA TARGETS 651820 > Nuclear Properties & Reactions, A=150-189, Experimental ZIRCONIUM 92 TARGET
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Zusammenfassung:	The neutron spectrum from the reaction /sup 92/Zr(/sup 64/Ni, 1n)/sup 155/Er has been measured at an average spin of 52h-dash-bar and for excitation energies between 30 and 36 MeV in /sup 155/Er. Channel and spin selection have been obtained from the Darmstadt-Heidelberg crystal ball. The level density in /sup 155/Er is derived within the framework of a Fermi-gas model. A level-density parameter of a = (A/(8.8 +- 1.3)) MeV/sup -1/ is deduced.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.60.11