Influence of incomplete fusion on complete fusion: Observation of a large incomplete fusion fraction at E {approx_equal}5-7 MeV/nucleon

Journal Article · Tue Jan 15 00:00:00 EST 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.77.014607· OSTI ID:21068057

Singh, Pushpendra P; Singh, B P; Sharma, Manoj Kumar; Unnati,; Singh, Devendra P; Prasad, R; Kumar, Rakesh; Golda, K S ^[1]

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1. Accelerator Laboratory, Department of Physics, A. M. University, Aligarh (UP) 202 002 (India)

Experiments have been carried out to explore the reaction dynamics leading to incomplete fusion of heavy ions at moderate excitation energies. Excitation functions for {sup 168}Lu{sup m}, {sup 167}Lu, {sup 167}Yb, {sup 166}Tm, {sup 179}Re, {sup 177}Re, {sup 177}W, {sup 178}Ta, and {sup 177}Hf radio-nuclides populated via complete and/or incomplete fusion of {sup 16}O with {sup 159}Tb and {sup 169}Tm have been studied over the wide projectile energy range E{sub proj}{approx_equal}75-95 MeV. Recoil-catcher technique followed by off-line {gamma}-spectrometry has been employed in the present measurements. Experimental data have been compared with the predictions of theoretical model code PACE2. The experimentally measured production cross sections of {alpha}-emitting channels were found to be larger as compared to the theoretical model predictions and may be attributed to incomplete fusion at these energies. During the analysis of experimental data, incomplete fusion has been found to be competing with complete fusion. As such, an attempt has been made to estimate the incomplete fusion fraction for both the systems, and has been found to be sensitive for projectile energy and mass asymmetry of interacting partners.

• OSTI ID: 21068057
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 77, Issue 1; Other Information: DOI: 10.1103/PhysRevC.77.014607; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA PARTICLES
ASYMMETRY
EXCITATION FUNCTIONS
GAMMA SPECTROSCOPY
HAFNIUM 177
HEAVY ION FUSION REACTIONS
LUTETIUM 167
MEV RANGE
NEUTRONS
OXYGEN 16 REACTIONS
PROTONS
RHENIUM 177
RHENIUM 179
TANTALUM 178
TERBIUM 159
TERBIUM 159 TARGET
THULIUM 166
THULIUM 169 TARGET
TUNGSTEN 177
YTTERBIUM 167