Nuclear deformations of /sup 24/Mg, /sup 28/Si, and /sup 32/S from fast neutron scattering

Journal Article · Sat Dec 01 04:00:00 EST 1984 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.30.1795· OSTI ID:6235812

Haouat, G; Lagrange, C; de Swiniarski, R; Dietrich, F; Delaroche, J P; Patin, Y

Nuclear deformation of the s-d shell nuclei /sup 24/Mg, /sup 28/Si, and /sup 32/S has been investigated by means of fast neutron scattering. Differential cross sections have been measured at the incident neutron energies of 9.76 and 14.83 MeV, over the angular range from 15/sup 0/ to 160/sup 0/. Angular distributions have been obtained for the elastic scattering and the inelastic scattering to low lying collective states. The measurements have been compared to the predictions of collective models, and nuclear deformations have been determined for these nuclei. The coupled-channel and compound-nucleus formalisms were used in the calculations. The analysis shows that these nuclei exhibit quite different shapes, and confirms the oblate deformation of /sup 28/Si established in recent works. A detailed comparison of the deformations obtained in this study with those deduced from (p,p'), (d,d'), (..cap alpha..,..cap alpha..'), (/sup 16/O, /sup 16/O'), other (n,n'), and charge distribution measurements is presented and discussed. It is emphasized that for these N = Z nuclei the quadrupole deformations and deformation lengths are in very good agreement when measured through neutron and proton scattering as well as electromagnetic excitations.

• Research Organization: Centre d'Etudes de Bruyeres-le-Chtel, Service de Physique Neutronique et Nucleaire, 91680 Bruyeres-le-Chtel, France
• OSTI ID: 6235812
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 30:6; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651425* -- Nuclear Properties & Reactions
A=20-38
Experimental-- Nuclear Reactions & Scattering-- (-1987)
653007 -- Nuclear Theory-- Nuclear Models-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BARYON REACTIONS
CHARGE DISTRIBUTION
COMPOUND-NUCLEUS REACTIONS
COUPLED CHANNEL THEORY
CROSS SECTIONS
DATA
DEFORMATION
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELASTIC SCATTERING
ENERGY RANGE
EXPERIMENTAL DATA
HADRON REACTIONS
INELASTIC SCATTERING
INFORMATION
MAGNESIUM 24 TARGET
MEV RANGE
MEV RANGE 01-10
MEV RANGE 10-100
NEUTRON REACTIONS
NUCLEAR DEFORMATION
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUMERICAL DATA
OPTICAL MODELS
QUADRUPOLE MOMENTS
SCATTERING
SILICON 28 TARGET
SULFUR 32 TARGET
TARGETS