Saturating interactions in /sup 4/He with density dependence
With the advent of larger and faster computers, as well as modern shell model codes, nuclear structure calculations for the light nuclei (A<16) which include full 2/bar h/..omega.. model spaces are quite feasible. However, there can be serious problems in the mixing of 2/bar h/..omega.. and higher excitations into the low-lying spectra if the effective interaction is non-saturating. Furthermore, effective interactions which are both saturating and density dependent have not generally been used in previous nuclear structure calculations. Therefore, we have undertaken studies of /sup 4/He using two-body potential interactions which incorporate both saturation and density-dependence. Encouraging initial results in remedying the mixing of 0 and 2/bar h/..omega.. excitations have been obtained. We have also considered the effects of our interaction on the /sup 4/He compressibility and the centroid of the breathing mode strength. First indications are that a saturating effective interaction, with a short-range density dependent part and a long-range density independent part, comes close to matching crude predictions for the compressibility of /sup 4/He. 11 refs., 6 tabs.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6247607
- Report Number(s):
- UCRL-100985; CONF-890583-1; ON: DE89011895
- Resource Relation:
- Conference: Symposium on the occasion of the 40th anniversary of the nuclear shell model, Argonne, IL, USA, 25 May 1989; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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HELIUM 4
SHELL MODELS
LIGHT NUCLEI
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COMPUTER CALCULATIONS
COMPRESSIBILITY
DENSITY
EXCITED STATES
GAUSSIAN PROCESSES
GROUND STATES
HARMONIC OSCILLATORS
SATURATION
SPECTRA
WAVE FUNCTIONS
ELECTRONIC EQUIPMENT
ENERGY LEVELS
EQUIPMENT
EVEN-EVEN NUCLEI
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HELIUM ISOTOPES
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STABLE ISOTOPES
653001* - Nuclear Theory- Nuclear Structure
Moments
Spin
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