Angular momentum dependence in 22 MeV $alpha$-particle elastic scattering by light nuclei
Journal Article
·
· Nucl. Phys., A, v. A218, no. 3, pp. 429-440
OSTI ID:4358098
Elastic scattering of 22 MeV alpha -particles by /sup 23, /sup 24,15,26/ Mg, /sup 27/Al and /sup 28/Si was measured between 24 and 174 deg lab. Partial angular distributions, from 120 to 174 deg , were also measured at incident energies of 18.4 and 20.7 MeV for /sup 24/Mg, and 18.9 and 20.5 MeV for /sup 28/ Si. The most striking feature of the data is the large-angle behavior spin-zero nuclei display more pronounced backward oscillations and the cross section rises more steeply towards 180 deg for 4n nuclei than for the others. Optical Model analyses with an l-dependent absorption and a minimum of free parameters are used to describe the general trend of the data for A = 23 to 28 nuclei at different energies; a spinorbit coupling term, 2.75 MeV deep, is added to describe the /sup 23/Na scattering data. (auth)
- Research Organization:
- Univ., Louvain, Belg.
- NSA Number:
- NSA-29-017186
- OSTI ID:
- 4358098
- Journal Information:
- Nucl. Phys., A, v. A218, no. 3, pp. 429-440, Journal Name: Nucl. Phys., A, v. A218, no. 3, pp. 429-440; ISSN NUPAB
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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Related Subjects
*ALPHA REACTIONS-- ELASTIC SCATTERING
*ALUMINIUM 27-- ALPHA REACTIONS
*MAGNESIUM 24-- ALPHA REACTIONS
*MAGNESIUM 25-- ALPHA REACTIONS
*MAGNESIUM 26-- ALPHA REACTIONS
*SILICON 28-- ALPHA REACTIONS
*SODIUM 22-- ALPHA REACTIONS
ABSORPTION
ANGULAR DISTRIBUTION
CROSS SECTIONS
L-S COUPLING
MEV RANGE 10-100
N68451* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
20 <= A <= 38--Nuclear Reactions & Scattering
OPTICAL MODELS
OSCILLATIONS
*ALUMINIUM 27-- ALPHA REACTIONS
*MAGNESIUM 24-- ALPHA REACTIONS
*MAGNESIUM 25-- ALPHA REACTIONS
*MAGNESIUM 26-- ALPHA REACTIONS
*SILICON 28-- ALPHA REACTIONS
*SODIUM 22-- ALPHA REACTIONS
ABSORPTION
ANGULAR DISTRIBUTION
CROSS SECTIONS
L-S COUPLING
MEV RANGE 10-100
N68451* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
20 <= A <= 38--Nuclear Reactions & Scattering
OPTICAL MODELS
OSCILLATIONS