Feeding of discrete-line superdeformed bands at very high spin

The superdeformed band in /sup 149/Gd has been populated with various input angular momenta and excitation energies. These, together with all other available data, indicate that the necessary criterion for populating superdeformed bands is to form cold residual nuclei at spins higher than those wher...

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Veröffentlicht in:	Phys. Rev. Lett.; (United States) 1988-09, Vol.61 (12), p.1348-1351
Hauptverfasser:	Taras, P, Flibotte, S, Gascon, J, Haas, B, Pilotte, S, Radford, DC, Ward, D, Andrews, HR, Ball, GC, Banville, F, Cournoyer, S, Horn, D, Johansson, JK, Monaro, S, Nadon, N, Prevost, D, Pruneau, C, Thibault, D, Tucker, DM, Waddington, JC
Format:	Artikel
Sprache:	eng
Schlagworte:	ALPHA DECAY RADIOISOTOPES ANGULAR MOMENTUM BARYONS BETA DECAY RADIOISOTOPES CHARGED-PARTICLE REACTIONS COMPOUND-NUCLEUS REACTIONS DATA DAYS LIVING RADIOISOTOPES DEFORMATION ELECTRON CAPTURE RADIOISOTOPES ELEMENTARY PARTICLES ENERGY LEVELS ENERGY RANGE EVEN-ODD NUCLEI EXPERIMENTAL DATA FERMIONS GADOLINIUM 149 GADOLINIUM ISOTOPES GAMMA SPECTRA HADRONS HEAVY ION REACTIONS HIGH SPIN STATES INFORMATION INTERMEDIATE MASS NUCLEI ISOTOPES MEV RANGE MEV RANGE 100-1000 NEUTRONS NUCLEAR DEFORMATION Nuclear Experiment NUCLEAR PHYSICS AND RADIATION PHYSICS NUCLEAR REACTION YIELD NUCLEAR REACTIONS NUCLEI NUCLEONS NUMERICAL DATA Physics RADIOISOTOPES RARE EARTH ISOTOPES RARE EARTH NUCLEI SILICON 30 REACTIONS SPECTRA TARGETS TIN 124 TARGET YIELDS 651720 > Nuclear Properties & Reactions, A=90-149, Experimental YRAST STATES
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Zusammenfassung:	The superdeformed band in /sup 149/Gd has been populated with various input angular momenta and excitation energies. These, together with all other available data, indicate that the necessary criterion for populating superdeformed bands is to form cold residual nuclei at spins higher than those where the superdeformed states become yrast. In addition, the decrease in the superdeformed band intensity as it is gated by higher-energy ..gamma.. rays does not support the predictions based on a recently proposed feeding mechanism of these states.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.61.1348