Population of isomeric states in fusion and transfer reactions in beams of loosely bound nuclei near the Coulomb barrier

Journal Article · Wed Jul 15 00:00:00 EDT 2015 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778815050154· OSTI ID:22472173

Skobelev, N. K., E-mail: [e-mail] ^[1]

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1. Joint Institute for Nuclear Research (Russian Federation)

The influence of the mechanisms of nuclear reactions on the population of {sup 195m}Hg and {sup 197m}Hg(7/2{sup −}), {sup 198m}Tl and {sup 196m}Tl(7{sup +}), and {sup 196m}Au and {sub 198m}Au(12{sup −}) isomeric nuclear states obtained in reactions induced by beams of {sup 3}He, {sup 6}Li, and {sup 6}He weakly bound nuclei is studied. The behavior of excitation functions and high values of isomeric ratios (δ{sub m}/δ{sub g}) for products of nuclear reactions proceeding through a compound nucleus and involving neutron evaporation are explained within statistical models. Reactions in which the emission of charged particles occurs have various isomeric ratios depending on the reaction type. The isomeric ratio is lower in direct transfer reactions involving charged-particle emission than in reactions where the evaporation of charged particles occurs. Reactions accompanied by neutron transfer usually have a lower isomeric ratio, which behaves differently for different direct-reaction types (stripping versus pickup reactions)

• OSTI ID: 22472173
• Journal Information: Physics of Atomic Nuclei, Vol. 78, Issue 5; Other Information: Copyright (c) 2015 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7788
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHARGED PARTICLES
COMPOUND NUCLEI
COULOMB FIELD
EVAPORATION MODEL
EXCITATION FUNCTIONS
GOLD 196
HELIUM 3
HELIUM 6
ISOMER RATIO
LITHIUM 6
MERCURY 195
MERCURY 197
NEUTRON EMISSION
NEUTRON TRANSFER
PICKUP REACTIONS
STATISTICAL MODELS
STRIPPING
THALLIUM 196
THALLIUM 198