Pre-fission neutron emission in {sup 19}F+{sup 209}Bi reaction

Journal Article · Wed Mar 04 00:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3108833· OSTI ID:21289476

Singh, Hardev; Sugathan, P; Shidling, P D; Behera, B R; Singh, Gulzar; Govil, I M ^[1]; Golda, K S; Jhingan, Akhil; Singh, R P; Chatterjee, M B; Datta, S K ^[2]; Pal, Santanu ^[3]; Ranjeet,; Mandal, S ^[4]; Viesti, G ^[5]

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1. Department of Physics, Panjab University, Chandigarh-160014 (India)
2. Inter University Accelerator Centre, New Delhi-110067 (India)
3. Variable Energy Cyclotron Centre, 1/AF, Bidhan Nagar, Kolkata-700064 (India)
4. Department of Physics and Astrophysics, Delhi University, Delhi 110007 (India)
5. Dipartimento di Fisica and Sezione INFN Padova, I-35131 Padova (Italy)

The pre- and post-scission neutron multiplicities are measured for {sup 19}F+{sup 209}Bi reaction at E{sub lab} = 100, 104, 108, 112 and 116 MeV. The measured value of pre-scission neutron multiplicity was found to be increasing with the excitation energy. The comparison of experimental values with the statistical model calculations shows that the measured values are much larger than the model predictions. This difference in excess yield over the model predictions amounts to the survival time of 80{+-}5x10{sup -21} s for the {sup 228}U compound nucleus before it undergoes fission.

• OSTI ID: 21289476
• Journal Information: AIP Conference Proceedings, Vol. 1098, Issue 1; Conference: FUSION08: International conference on new aspects of heavy ion collisions near the Coulomb barrier, Chicago, IL (United States), 22-26 Sep 2008; Other Information: DOI: 10.1063/1.3108833; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BISMUTH 209 TARGET
COMPARATIVE EVALUATIONS
COMPOUND NUCLEI
COMPOUND-NUCLEUS REACTIONS
ENERGY DEPENDENCE
EXCITATION
FISSION
FISSION NEUTRONS
FLUORINE 19 REACTIONS
GAMMA SPECTROSCOPY
HEAVY ION FUSION REACTIONS
MEV RANGE
NEUTRON EMISSION
SCISSION-POINT MODEL
STATISTICAL MODELS
URANIUM 228