Investigations of direct and sequential Coulomb break-up of light ions
Description
Coulomb dissociation of 6Li in the field of 208Pb at different energies via resonance and continuum levels is discussed in detail. Relations are given which can be used to directly relate the Coulomb break-up cross section to the astrophysical S-factor. Predictions for energy dependence and angular-distributions are given. The direct Coulomb break-up of 6Li is found to be of the same order of magnitude as the sequential break-up at higher projectile energies. The effect to eleastic scattering can be accounted for by introducing a dynamic polarization potential. Predictions are given for the direct Coulomb dissociation of 26 MeV/nucleon 7Li and 16O incident on 208Pb through dipole transitions to the continuum, and for 20Ne via quadrupole transitions in similar experimental situations. (orig.)
Availability note (English)
MF available from INIS under the Report Number.Abstract (German)
Die Coulombdissoziation von 6Li im Feld von 208Pb ueber Resonanz- und Kontinuumzustaende wird fuer verschiedene Projektilenergien im Detail diskutiert. Es werden Beziehungen zwischen dem Coulomb-Aufbruch-Wirkungsquerschnitt und dem astrophysikalischen S-Faktor angegeben. Bei hoeheren Projektilenergien erweist sich der direkte Beitrag von der gleichen Groessenordnung wie der Aufbruch ueber einen Zweistufen-Prozess. Die Rueckwirkung des Coulomb-Aufbruchs auf die elastische Streuung kann durch ein dynamisches Polarisations-Potential beschrieben werden. Zusaetzlich werden theoretische Voraussagen gemacht fuer den Coulomb-Aufbruch von 7Li und 16O ueber E1-Kontinuums-Uebergaenge sowie fuer den E2-20Ne Aufbruch bei Projektilenergien von 26 MeV/amu. (orig.)
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Additional details
Publishing Information
- Imprint Pagination
- 42 p.
- Report number
- KFK--4446
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 20005028
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ALPHA DECAY; ALPHA PARTICLES; BREAKUP REACTIONS; CARBON 12; COMPOUND NUCLEI; COMPOUND-NUCLEUS REACTIONS; COULOMB EXCITATION; COULOMB FIELD; DEUTERONS; DIFFERENTIAL CROSS SECTIONS; ENERGY DEPENDENCE; ENERGY SPECTRA; EXCITATION FUNCTIONS; E1-TRANSITIONS; E2-TRANSITIONS; INTEGRAL CROSS SECTIONS; LEAD 208; LEAD 208 TARGET; LEVEL WIDTHS; LIGHT NUCLEI; LITHIUM 6; LITHIUM 6 REACTIONS; LITHIUM 7; LITHIUM 7 REACTIONS; MEV RANGE 10-100; MEV RANGE 100-1000; NEON 20; NEON 20 REACTIONS; NUCLEAR REACTION KINETICS; OXYGEN 16; OXYGEN 16 REACTIONS; QUASI-ELASTIC SCATTERING; RESONANCE; ROTATIONAL STATES; STRENGTH FUNCTIONS; THEORETICAL DATA; TRITONS
- Descriptors DEC
- CARBON ISOTOPES; CHARGED PARTICLES; CROSS SECTIONS; DATA; DECAY; ELECTRIC FIELDS; ENERGY LEVELS; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; EVEN-EVEN NUCLEI; EXCITATION; EXCITED STATES; FUNCTIONS; HEAVY ION REACTIONS; HEAVY NUCLEI; HELIUM IONS; INFORMATION; IONIZING RADIATIONS; IONS; ISOTOPES; KINETICS; LEAD ISOTOPES; LITHIUM ISOTOPES; MEV RANGE; MULTIPOLE TRANSITIONS; NEON ISOTOPES; NUCLEAR DECAY; NUCLEAR REACTIONS; NUCLEI; NUMERICAL DATA; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; OXYGEN ISOTOPES; RADIATIONS; REACTION KINETICS; SCATTERING; SPECTRA; STABLE ISOTOPES; TARGETS