Published September 21, 1989 | Version v1
Journal article Metadata-only

Collective particle-hole screening effects in 208Pb

Creators

  • 1. Kernforschungsanlage Juelich G.m.b.H. (Germany, F.R.). Inst. fuer Kernphysik

Description

The importance of higher-order particle-hole screening corrections to the Brueckner G-matrix is investigated for isoscalar vibrational modes in finite nuclei. Starting from lowest-order second RPA, the nonlinear problem of exchanging collective modes between particle-hole pairs is solved iteratively. The influence of such higher-order effects on the position of collective modes of 208Pb is found to be slight. Thus in finite nuclei, the lowest-order second RPA appears sufficient to account for particle-hole screening. (orig.)

Additional details

Publishing Information

Journal Title
Physics Letters, (Section) B
Journal Volume
228
Journal Issue
3
Series
Phys. Lett., B.
Journal Page Range
299-303
ISSN
0370-2693
CODEN
PYLBA

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
21001253
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
BRUECKNER MODEL; COLLECTIVE MODEL; CORRECTIONS; EXCHANGE INTERACTIONS; E0-TRANSITIONS; FEYNMAN DIAGRAM; G MATRIX; GIANT RESONANCE; HAMILTONIANS; ITERATIVE METHODS; LEAD 208; MEAN-FIELD THEORY; NONLINEAR PROBLEMS; NUCLEAR SCREENING; NUCLEAR STRUCTURE; PARTICLE-HOLE MODEL; PROPAGATOR; RANDOM PHASE APPROXIMATION; RESPONSE FUNCTIONS; STRENGTH FUNCTIONS; THEORETICAL DATA; VIBRATIONAL STATES
Descriptors DEC
DATA; DIAGRAMS; ENERGY LEVELS; ENERGY-LEVEL TRANSITIONS; EVEN-EVEN NUCLEI; EXCITED STATES; FUNCTIONS; HEAVY NUCLEI; INFORMATION; INTERACTIONS; ISOTOPES; LEAD ISOTOPES; MATHEMATICAL MODELS; MATHEMATICAL OPERATORS; MATRICES; MULTIPOLE TRANSITIONS; NUCLEAR MODELS; NUCLEI; NUMERICAL DATA; QUANTUM OPERATORS; RESONANCE; STABLE ISOTOPES

Optional Information

Contract/Grant/Project number
Grant PHY-84-15064; NATO Rg. 85. 0093