Investigation of the mechanism of inelastic alpha-particle scattering on {sup 28}Si nuclei by the method of angular {alpha}{gamma} correlations at E{sub {alpha}} = 30.3 MeV

Journal Article · Sun Aug 15 04:00:00 EDT 2010 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778810080077· OSTI ID:21436228

Zelenskaya, N S; Konyukhova, I A; Lebedev, V M; Orlova, N V; Spassky, A V ^[1]

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1. Moscow State University, Skobeltsyn Institute of Nuclear Physics (Russian Federation)

The angular dependence of the differential cross sections for alpha-particle scattering on {sup 28}Si nuclei and double-differential cross sections for the reaction {sup 28}Si({alpha}, {alpha}{gamma}){sup 28}Si at E{sub {alpha}} = 30.3 MeV is measured for the case of alpha-particle emission angle between 20{sup o} and 160{sup o} and the excitation of low-lying states of the {sup 28}Si nucleus (0{sup +}, ground state; 2{sup +} state at 1.78 MeV; 4{sup +} state at 4.62 MeV; 0{sup +} state at 4.96 MeV; and 3{sup -} + 4{sup +}, 6.88 MeV + 6.89 MeV). The spin-tensor components of the density matrix for the 2{sup +} state at 1.78 MeV and the 4{sup +} state at 4.62 MeV in the {sup 28}Si* nucleus are reconstructed in a modelindependent way. Seven rank-6 components are reconstructed for the 3{sup -} state at 6.88 MeV. Orientation features of {sup 28}Si* are determined. The experimental data in question are compared with the results of the calculations performed under the assumption of the collective-excitation mechanism and by the coupled-channel method.

• OSTI ID: 21436228
• Journal Information: Physics of Atomic Nuclei, Journal Name: Physics of Atomic Nuclei Journal Issue: 8 Vol. 73; ISSN 1063-7788; ISSN PANUEO
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ALPHA PARTICLES
ANGULAR CORRELATION
ANGULAR MOMENTUM
CHARGED PARTICLES
COLLECTIVE EXCITATIONS
CORRELATIONS
COUPLED CHANNEL THEORY
CROSS SECTIONS
DATA
DENSITY MATRIX
DIFFERENTIAL CROSS SECTIONS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EXCITATION
EXPERIMENTAL DATA
INFORMATION
IONIZING RADIATIONS
ISOTOPES
LIGHT NUCLEI
MATRICES
MEV RANGE
NUCLEI
NUMERICAL DATA
ORIENTATION
PARTICLE PROPERTIES
RADIATIONS
SCATTERING
SILICON 28
SILICON ISOTOPES
SPIN
STABLE ISOTOPES
TENSORS